dsPIC30F4011/4012 Data Sheet - Microchip...
Transcript of dsPIC30F4011/4012 Data Sheet - Microchip...
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2010 Microchip Technology Inc. DS70135G
dsPIC30F4011/4012Data Sheet
High-Performance,16-Bit Digital Signal Controllers
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Note the following details of the code protection feature on Microchip devices: Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchips Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as unbreakable.
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of ourproducts. Attempts to break Microchips code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyers risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights.
DS70135G-page 2
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their respective companies.
2010, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-60932-713-2Microchip received ISO/TS-16949:2002 certification for its worldwide
2010 Microchip Technology Inc.
headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Companys quality system processes and procedures are for its PIC MCUs and dsPIC DSCs, KEELOQ code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchips quality system for the design and manufacture of development systems is ISO 9001:2000 certified.
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dsPIC30F4011/4012High-Performance, 16-Bit Digital Signal Controllers
High-Performance, Modified RISC CPU: Modified Harvard architecture C compiler optimized instruction set architecture
with flexible addressing modes 83 base instructions 24-bit wide instructions, 16-bit wide data path 48 Kbytes on-chip Flash program space
(16K instruction words) 2 Kbytes of on-chip data RAM 1 Kbyte of nonvolatile data EEPROM Up to 30 MIPS operation:
- DC to 40 MHz external clock input- 4 MHz-10 MHz oscillator input with
PLL active (4x, 8x, 16x) 30 interrupt sources:
- Three external interrupt sources- Eight user-selectable priority levels for each
interrupt source- Four processor trap sources
16 x 16-bit working register array
DSP Engine Features: Dual data fetch Accumulator write-back for DSP operations Modulo and Bit-Reversed Addressing modes Two, 40-bit wide accumulators with optional
saturation logic 17-bit x 17-bit single-cycle hardware
fractional/integer multiplier All DSP instructions are single cycle 16-bit, single-cycle shift
Peripheral Features: High-current sink/source I/O pins: 25 mA/25 mA Timer module with programmable prescaler:
- Five 16-bit timers/counters; optionally pair 16-bit timers into 32-bit timer modules
16-bit Capture input functions 16-bit Compare/PWM output functions 3-wire SPI modules (supports 4 Frame modes) I2C module supports Multi-Master/Slave mode
and 7-bit/10-bit addressing Two UART modules with FIFO Buffers CAN module, 2.0B compliant
Motor Control PWM Module Features: Six PWM output channels:
- Complementary or Independent Output modes
- Edge and Center-Aligned modes Three duty cycle generators Dedicated time base Programmable output polarity Dead-time control for Complementary mode Manual output control Trigger for A/D conversions
Quadrature Encoder Interface Module Features: Phase A, Phase B and Index Pulse input 16-bit up/down position counter Count direction status Position Measurement (x2 and x4) mode Programmable digital noise filters on inputs Alternate 16-bit Timer/Counter mode Interrupt on position counter rollover/underflow
Analog Features: 10-bit Analog-to-Digital Converter (ADC) with
four Sample and Holde (S&H) inputs:- 1 Msps conversion rate- Nine input channels- Conversion available during Sleep and Idle
Programmable Brown-out Reset
Note: This data sheet summarizes features ofthis group of dsPIC30F devices and is notintended to be a complete referencesource. For more information on the CPU,peripherals, register descriptions andgeneral device functionality, refer to thedsPIC30F Family Reference Manual(DS70046). For more information on thedevice instruction set and programming,refer to the 16-bit MCU and DSCReference Manual (DS70157).
2010 Microchip Technology Inc. DS70135G-page 3
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dsPIC30F4011/4012
Special Digital Signal Controller Features: Enhanced Flash program memory:
- 10,000 erase/write cycle (min.) for industrial temperature range, 100K (typical)
Data EEPROM memory:- 100,000 erase/write cycle (min.) for
industrial temperature range, 1M (typical) Self-reprogrammable under software control Power-on Reset (POR), Power-up Timer (PWRT)
and Oscillator Start-up Timer (OST) Flexible Watchdog Timer (WDT) with on-chip,
low-power RC oscillator for reliable operation Fail-Safe Clock Monitor operation detects clock
failure and switches to on-chip, low-power RC oscillator
Programmable code protection In-Circuit Serial Programming (ICSP) Selectable Power Management modes:
- Sleep, Idle and Alternate Clock modes
CMOS Technology: Low-power, high-speed Flash technology Wide operating voltage range (2.5V to 5.5V) Industrial and Extended temperature ranges Low-power consumption
dsPIC30F Motor Control and Power Conversion Family
Device PinsProgram
Mem. Bytes/Instructions
SRAMBytes
EEPROMBytes
Timer 16-bit
InputCap
OutputComp/Std
PWM
MotorControl
PWM
10-bit A/D 1 Msps
Quad Enc U
AR
T
SPI
I2C
CA
N
dsPIC30F4012 28 48K/16K 2048 1024 5 4 2 6 ch 6 ch Yes 1 1 1 1dsPIC30F4011 40/44 48K/16K 2048 1024 5 4 4 6 ch 9 ch Yes 2 1 1 1
DS70135G-page 4 2010 Microchip Technology Inc.
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dsPIC30F4011/4012
Pin Diagrams
AN7/RB7AN6/OCFA/RB6
C1RX/RF0C1TX/RF1
OC3/RD2EMUC2/OC1/IC1/INT1/RD0
AN8/RB8
1234567891011121314151617181920
4039383736353433323130292827262524232221
dsPIC30F4011
MCLR
VDDVSS
EMUD2/OC2/IC2/INT2/RD1
EMUC1/SOSCO/T1CK/U1ARX/CN0/RC14EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13
OSC2/CLKO/RC15OSC1/CLKI
PWM1L/RE0PWM1H/RE1PWM2L/RE2PWM2H/RE3
PWM3H/RE5
AVDDAVSS
OC4/RD3
VSSVDD
SCK1/RF6
PGC/EMUC/U1RX/SDI1/SDA/RF2PGD/EMUD/U1TX/SDO1/SCL/RF3
PWM3L/RE4
VDD
U2RX/CN17/RF4U2TX/CN18/RF5
AN4/QEA/IC7/CN6/RB4
AN2/SS1/CN4/RB2EMUC3/AN1/VREF-/CN3/RB1EMUD3/AN0/VREF+/CN2/RB0
AN5/QEB/IC8/CN7/RB5
FLTA/INT0/RE8
VSS
AN3/INDX/CN5/RB3
40-Pin PDIP
1011
23456
1
18 19 20 21 2212 13 14 15
38
87
44 43 42 41 40 3916 17
2930313233
232425262728
36 3435
9
37
PG
D/E
MU
D/U
1TX/
SDO
1/S
CL/
RF3
SC
K1/
RF6
EM
UC
2/O
C1/
IC1/
INT1
/RD
0O
C3/
RD
2V
DD
EM
UC
1/SO
SC
O/T
1CK/
U1A
RX
/CN
0/R
C14
NC
VS
SO
C4/
RD
3E
MU
D2/
OC
2/IC
2/IN
T2/R
D1
FLTA
/INT0
/RE
8
AN
3/IN
DX
/CN
5/R
B3
AN2/
SS1/
CN
4/R
B2
EM
UC
3/A
N1/
V RE
F-/C
N3/
RB
1E
MU
D3/
AN
0/V R
EF+
/CN
2/R
B0
MC
LRNC
AVD
DAV
SS
PW
M1L
/RE
0P
WM
1H/R
E1
PWM2H/RE3PWM3L/RE4PWM3H/RE5
VDDVSS
C1RX/RF0C1TX/RF1
U2RX/CN17/RF4U2TX/CN18/RF5
PGC/EMUC/U1RX/SDI1/SDA/RF2
AN4/QEA/IC7/CN6/RB4AN5/QEB/IC8/CN7/RB5AN6/OCFA/RB6AN7/RB7AN8/RB8
NC
VDDVSSOSC1/CLKIOSC2/CLKO/RC15EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13
44-Pin TQFP
dsPIC30F4011
PWM2L/RE2
NC
2010 Microchip Technology Inc. DS70135G-page 5
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dsPIC30F4011/4012
Pin Diagrams (Continued)
44-Pin QFN(1)
44 43 42 41 40 39 38 37 36 35
14 15 16 17 18 19 20 21
33029282726252423
45
789
1011
12 32
31
dsPIC30F4011
PWM2H/RE3PWM3L/RE4PWM3H/RE5
VDDVDD
C1RX/RF0C1TX/RF1
U2RX/CN17/RF4U2TX/CN18/RF5
PGC/EMUC/U1RX/SDI1/SDA/RF2
AN3/
IND
X/C
N5/
RB3
AN
2/S
S1/C
N4/
RB2
EMU
C3/
AN1/
VRE
F-/C
N3/
RB
1E
MU
D3/
AN
0/V R
EF+
/CN
2/R
B0M
CLR
AVD
D
PW
M1L
/RE0
PWM
1H/R
E1
PW
M2L
/RE2
AN4/QEA/IC7/CN6/RB4AN5/QEB/IC8/CN7/RB5AN6/OCFA/RB6AN7/RB7AN8/RB8
VDDVSS
OSC1/CLKIOSC2/CLKO/RC15
PG
D/E
MU
D/U
1TX
/SD
O1/
SC
L/R
F3S
CK
1/R
F6E
MU
C2/
OC
1/IC
1/IN
T1/R
D0
OC
3/R
D2
VD
D
EM
UC
1/SO
SC
O/T
1CK/
U1A
RX
/CN
0/R
C14
OC
4/R
D3
EM
UD
2/O
C2/
IC2/
INT2
/RD
1FL
TA/IN
T0/R
E8
6
22
33
34
VSS
AVS
S
VDD
VS
S
EM
UD
1/SO
SC
I/T2C
K/U
1ATX
/CN
1/R
C13
VSS
NC
12 13
Note 1: The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
DS70135G-page 6 2010 Microchip Technology Inc.
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dsPIC30F4011/4012
Pin Diagrams (Continued)
dsPIC30F4012
MCLR
PWM1L/RE0PWM1H/RE1PWM2L/RE2PWM2H/RE3PWM3L/RE4PWM3H/RE5VSS
VDD
EMUD3/AN0/VREF+/CN2/RB0EMUC3/AN1/VREF-/CN3/RB1
AVDDAVSS
AN2/SS1/CN4/RB2
EMUD2/OC2/IC2/INT2/RD1 EMUC2/OC1/IC1/INT1/RD0
EMUC1/SOSCO/T1CK/U1ARX/CN0/RC14EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13
VSSOSC2/CLKO/RC15OSC1/CLKI VDD
FLTA/INT0/SCK1/OCFA/RE8
PGC/EMUC/U1RX/SDI1/SDA/C1RX/RF2PGD/EMUD/U1TX/SDO1/SCL/C1TX/RF3
AN5/QEB/IC8/CN7/RB5AN4/QEA/IC7/CN6/RB4
AN3/INDX/CN5/RB3
1234567891011121314
2827262524232221201918171615
28-Pin SPDIP and SOIC
44-Pin QFN(1)
33029282726252423
45
789
1011
12 32
31
dsPIC30F4012
PWM2H/RE3PWM3L/RE4PWM3H/RE5
VDDVDD
NCNCNCNC
PGC/EMUC/U1RX/SDI1/SDA/C1RX/RF2
AN3/
IND
X/C
N5/
RB3
AN2/
SS1 /
CN
4/R
B2E
MU
C3/
AN
1/VR
EF-
/CN
3/R
B1E
MU
D3/
AN
0/V R
EF+
/CN
2/R
B0M
CLR
AVD
D
PW
M1L
/RE0
PWM
1H/R
E1
PW
M2L
/RE2
AN4/QEA/IC7/CN6/RB4AN5/QEB/IC8/CN7/RB5NCNCNC
VDDVSS
OSC1/CLKIOSC2/CLKO/RC15
PG
D/E
MU
D/U
1TX
/SD
O1/
SCL/
C1T
X/R
F3FL
TA/IN
T0/S
CK1
/OC
FA/R
E8
EM
UC
2/O
C1/
IC1/
INT1
/RD
0N
CV
DD
EM
UC
1/S
OSC
O/T
1CK
/U1A
RX
/CN
0/R
C14
NC
EM
UD
2/O
C2/
IC2/
INT2
/RD
1V
DD
6
33
VSS
AVS
S
VDD
VS
S
EM
UD
1/S
OSC
I/T2C
K/U
1ATX
/CN
1/R
C13
VSS
NC
14 15 16 17 18 19 20 21 2212 1344 43 42 41 40 39 38 37 36 35 34
Note 1: The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
2010 Microchip Technology Inc. DS70135G-page 7
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dsPIC30F4011/4012
Table of Contents1.0 Device Overview .......................................................................................................................................................................... 92.0 CPU Architecture Overview........................................................................................................................................................ 173.0 Memory Organization ................................................................................................................................................................. 254.0 Address Generator Units............................................................................................................................................................ 375.0 Interrupts .................................................................................................................................................................................... 436.0 Flash Program Memory.............................................................................................................................................................. 497.0 Data EEPROM Memory ............................................................................................................................................................. 558.0 I/O Ports ..................................................................................................................................................................................... 619.0 Timer1 Module ........................................................................................................................................................................... 6710.0 Timer2/3 Module ........................................................................................................................................................................ 7111.0 Timer4/5 Module ....................................................................................................................................................................... 7712.0 Input Capture Module................................................................................................................................................................. 8113.0 Output Compare Module ............................................................................................................................................................ 8514.0 Quadrature Encoder Interface (QEI) Module ............................................................................................................................. 9115.0 Motor Control PWM Module ....................................................................................................................................................... 9716.0 SPI Module ........................................................................................................................................................................... 10917.0 I2C Module ........................................................................................................................................................................... 11318.0 Universal Asynchronous Receiver Transmitter (UART) Module .............................................................................................. 12119.0 CAN Module ............................................................................................................................................................................. 12920.0 10-bit, High-Speed Analog-to-Digital Converter (ADC) Module ............................................................................................... 13921.0 System Integration ................................................................................................................................................................... 15122.0 Instruction Set Summary .......................................................................................................................................................... 16523.0 Development Support............................................................................................................................................................... 17324.0 Electrical Characteristics .......................................................................................................................................................... 17725.0 Packaging Information.............................................................................................................................................................. 219The Microchip Web Site ..................................................................................................................................................................... 235Customer Change Notification Service .............................................................................................................................................. 235Customer Support .............................................................................................................................................................................. 235Reader Response .............................................................................................................................................................................. 236Product Identification System............................................................................................................................................................. 237
TO OUR VALUED CUSTOMERSIt is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchipproducts. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined andenhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department viaE-mail at [email protected] or fax the Reader Response Form in the back of this data sheet to (480) 792-4150. Wewelcome your feedback.
Most Current Data SheetTo obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.comYou can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
ErrataAn errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for currentdevices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision ofsilicon and revision of document to which it applies.To determine if an errata sheet exists for a particular device, please check with one of the following: Microchips Worldwide Web site; http://www.microchip.com Your local Microchip sales office (see last page)When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you areusing.
Customer Notification SystemRegister on our web site at www.microchip.com to receive the most current information on all of our products.
DS70135G-page 8 2010 Microchip Technology Inc.
mailto:[email protected]://www.microchip.comhttp://www.microchip.com
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dsPIC30F4011/4012
1.0 DEVICE OVERVIEW
This document contains device-specific information forthe dsPIC30F4011/4012 devices. The dsPIC30Fdevices contain extensive Digital Signal Processor(DSP) functionality within a high-performance, 16-bitmicrocontroller (MCU) architecture. Figure 1-1 andFigure 1-2 illustrate device block diagrams for thedsPIC30F4011 and dsPIC30F4012 devices.
Note: This data sheet summarizes features ofthis group of dsPIC30F devices and is notintended to be a complete referencesource. For more information on the CPU,peripherals, register descriptions andgeneral device functionality, refer to thedsPIC30F Family Reference Manual(DS70046). For more information on thedevice instruction set and programming,refer to the 16-bit MCU and DSCProgrammers Reference Manual(DS70157).
2010 Microchip Technology Inc. DS70135G-page 9
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dsPIC30F4011/4012
FIGURE 1-1: dsPIC30F4011 BLOCK DIAGRAM
AN8/RB8
Power-upTimer
OscillatorStart-up Timer
POR/BORReset
WatchdogTimer
InstructionDecode and
Control
OSC1/CLKI
MCLR
VDD, VSS
AN4/QEA/IC7/CN6/RB4
UART1,SPI1 Motor ControlPWM
TimingGeneration
CAN
AN5/QEB/IC8/CN7/RB5
16
PCH PCLProgram Counter
ALU
16
Address Latch
Program Memory(48 Kbytes)
Data Latch
24
24
24
24
X Data Bus
IR
I2C
QEI
AN6/OCFA/RB6AN7/RB7
PCU
PWM1L/RE0PWM1H/RE1PWM2L/RE2PWM2H/RE3PWM3L/RE4
10-bit ADC
TimersPWM3H/RE5FLTA/INT0/RE8
U2TX/CN18/RF5SCK1/RF6
InputCaptureModule
Output Compare
Module
EMUC1/SOSCO/T1CK/U1ARX/CN0/RC14EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13
PORTB
C1RX/RF0C1TX/RF1PGC/EMUC/U1RX/SDI1/SDA/RF2PGD/EMUD/U1TX/SDO1/SCL/RF3
PORTF
PORTD
16
16 16
16 x 16W Reg Array
Divide UnitEngine
DSP
Decode
ROM Latch
16
Y Data Bus
Effective Address
X RAGUX WAGUY AGU
EMUD3/AN0/VREF+/CN2/RB0EMUC3/AN1/VREF-/CN3/RB1AN2/SS1/CN4/RB2AN3/INDX/CN5/RB3
OSC2/CLKO/RC15
U2RX/CN17/RF4
AVDD, AVSS
UART2
16
16
16
16
16
PORTC
PORTE
16
16
16
16
8
InterruptController PSV & TableData Access
Control Block
StackControlLogic
LoopControlLogic
Data LatchData LatchY Data
(1 Kbyte)RAM
X Data
(1 Kbyte)RAM
AddressLatch
AddressLatch
Control Signals to Various
EMUC2/OC1/IC1/INT1/RD0EMUD2/OC2/IC2/INT2/RD1OC3/RD2OC4/RD3
16
Data EEPROM(1 Kbyte)
16
Blocks
DS70135G-page 10 2010 Microchip Technology Inc.
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dsPIC30F4011/4012
FIGURE 1-2: dsPIC30F4012 BLOCK DIAGRAM
Power-upTimer
OscillatorStart-up Timer
POR/BORReset
WatchdogTimer
InstructionDecode and
Control
OSC1/CLKI
MCLR
VDD, VSS
AN4/QEA/IC7/CN6/RB4
UART1,SPI1, Motor ControlPWM
TimingGeneration
CAN
AN5/QEB/IC8/CN7/RB5
16
PCH PCLProgram Counter
ALU
16
Address Latch
Program Memory(48 Kbytes)
Data Latch
24
24
24
24
X Data Bus
IR
I2C
QEI
PCU
PWM1L/RE0PWM1H/RE1PWM2L/RE2PWM2H/RE3PWM3L/RE4
10-bit ADC
TimersPWM3H/RE5FLTA/INT0/SCK1/OCFA/RE8
InputCaptureModule
Output Compare
Module
EMUC1/SOSCO/T1CK/U1ARX/CN0/RC14EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13
PORTB
PGC/EMUC/U1RX/SDI1/SDA/C1RX/RF2PGD/EMUD/U1TX/SDO1/SCL/C1TX/RF3
PORTF
PORTD
16
16 16
16 x 16W Reg Array
Divide Unit Engine
DSP
Decode
ROM Latch
16
Y Data Bus
Effective Address
X RAGUX WAGU Y AGU EMUD3/AN0/VREF+/CN2/RB0
EMUC3/AN1/VREF-/CN3/RB1AN2/SS1/CN4/RB2AN3/INDX/CN5/RB3
OSC2/CLKO/RC15
AVDD, AVSS
UART2
16
16
16
16
16
PORTC
PORTE
16
16
16
16
8
InterruptController PSV & TableData Access
Control Block
StackControl Logic
LoopControlLogic
Data LatchData LatchY Data
(1 Kbyte)RAM
X Data
(1 Kbyte)RAM
AddressLatch
AddressLatch
Control Signals to Various
EMUC2/OC1/IC1/INT1RD0EMUD2/OC2/IC2/INT2/RD1
16
Data EEPROM(1 Kbyte)
16
SPI2
Blocks
2010 Microchip Technology Inc. DS70135G-page 11
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dsPIC30F4011/4012
Table 1-1 provides a brief description of the device I/Opinout and the functions that are multiplexed to a portpin. Multiple functions may exist on one port pin. Whenmultiplexing occurs, the peripheral modules functionalrequirements may force an override of the datadirection of the port pin.
TABLE 1-1: dsPIC30F4011 I/O PIN DESCRIPTIONS
Pin Name Pin TypeBuffer Type Description
AN0-AN8 I Analog Analog input channels. AN0 and AN1 are also used for device programming data and clock inputs, respectively.
AVDD P P Positive supply for analog module. This pin must be connected at all times.AVSS P P Ground reference for analog module. This pin must be connected at all times.CLKICLKO
IO
ST/CMOS
External clock source input. Always associated with OSC1 pin function.Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes.Always associated with OSC2 pin function.
CN0-CN7CN17-CN18
I ST Input change notification inputs. Can be software programmed for internal weak pull-ups on all inputs.
C1RXC1TX
IO
ST
CAN1 bus receive pin.CAN1 bus transmit pin.
EMUDEMUCEMUD1EMUC1EMUD2EMUC2EMUD3EMUC3
I/OI/OI/OI/OI/OI/OI/OI/O
STSTSTSTSTSTSTST
ICD Primary Communication Channel data input/output pin.ICD Primary Communication Channel clock input/output pin.ICD Secondary Communication Channel data input/output pin.ICD Secondary Communication Channel clock input/output pin.ICD Tertiary Communication Channel data input/output pin.ICD Tertiary Communication Channel clock input/output pin.ICD Quaternary Communication Channel data input/output pin.ICD Quaternary Communication Channel clock input/output pin.
IC1, IC2, IC7, IC8
I ST Capture inputs 1, 2, 7 and 8.
INDXQEA
QEB
II
I
STST
ST
Quadrature Encoder Index Pulse input.Quadrature Encoder Phase A input in QEI mode. Auxiliary Timer External Clock/Gate input in Timer mode.Quadrature Encoder Phase B input in QEI mode. Auxiliary Timer External Clock/Gate input in Timer mode.
INT0INT1INT2
III
STSTST
External interrupt 0.External interrupt 1.External interrupt 2.
FLTAPWM1LPWM1HPWM2LPWM2HPWM3LPWM3H
IOOOOOO
ST
PWM Fault A input.PWM1 low output. PWM1 high output.PWM2 low output.PWM2 high output.PWM3 low output.PWM3 high output.
MCLR I/P ST Master Clear (Reset) input or programming voltage input. This pin is an active-low Reset to the device.
OCFAOC1-OC4
IO
ST
Compare Fault A input (for Compare channels 1, 2, 3 and 4).Compare outputs 1 through 4.
Legend: CMOS = CMOS compatible input or output Analog = Analog inputST = Schmitt Trigger input with CMOS levels O = Output I = Input P = Power
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OSC1
OSC2
I
I/O
ST/CMOS
Oscillator crystal input. ST buffer when configured in RC mode; CMOS otherwise.Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes.
PGDPGC
I/OI
STST
In-Circuit Serial Programming data input/output pin.In-Circuit Serial Programming clock input pin.
RB0-RB8 I/O ST PORTB is a bidirectional I/O port.RC13-RC15 I/O ST PORTC is a bidirectional I/O port.RD0-RD3 I/O ST PORTD is a bidirectional I/O port.RE0-RE5, RE8
I/O ST PORTE is a bidirectional I/O port.
RF0-RF6 I/O ST PORTF is a bidirectional I/O port.SCK1SDI1SDO1SS1
I/OIOI
STSTST
Synchronous serial clock input/output for SPI1.SPI1 data in.SPI1 data out.SPI1 slave synchronization.
SCLSDA
I/OI/O
STST
Synchronous serial clock input/output for I2C.Synchronous serial data input/output for I2C.
SOSCOSOSCI
OI
ST/CMOS
32 kHz low-power oscillator crystal output. 32 kHz low-power oscillator crystal input. ST buffer when configured in RC mode; CMOS otherwise.
T1CKT2CK
II
STST
Timer1 external clock input.Timer2 external clock input.
U1RXU1TXU1ARXU1ATXU2RXU2TX
IOIOIO
STSTST
UART1 receive.UART1 transmit.UART1 alternate receive.UART1 alternate transmit.UART2 receive.UART2 transmit.
VDD P Positive supply for logic and I/O pins.VSS P Ground reference for logic and I/O pins.VREF+ I Analog Analog voltage reference (high) input.VREF- I Analog Analog voltage reference (low) input.
TABLE 1-1: dsPIC30F4011 I/O PIN DESCRIPTIONS (CONTINUED)
Pin Name Pin TypeBuffer Type Description
Legend: CMOS = CMOS compatible input or output Analog = Analog inputST = Schmitt Trigger input with CMOS levels O = Output I = Input P = Power
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Table 1-2 provides a brief description of the device I/Opinout and the functions that are multiplexed to a portpin. Multiple functions may exist on one port pin. Whenmultiplexing occurs, the peripheral modules functionalrequirements may force an override of the datadirection of the port pin.
TABLE 1-2: dsPIC30F4012 I/O PIN DESCRIPTIONS
Pin Name Pin TypeBuffer Type Description
AN0-AN5 I Analog Analog input channels. AN0 and AN1 are also used for device programming data and clock inputs, respectively.
AVDD P P Positive supply for analog module. This pin must be connected at all times.AVSS P P Ground reference for analog module. This pin must be connected at all times.CLKICLKO
IO
ST/CMOS
External clock source input. Always associated with OSC1 pin function.Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes.Always associated with OSC2 pin function.
CN0-CN7 I ST Input change notification inputs. Can be software programmed for internal weak pull-ups on all inputs.
C1RXC1TX
IO
ST
CAN1 bus receive pin.CAN1 bus transmit pin.
EMUDEMUCEMUD1EMUC1EMUD2EMUC2EMUD3EMUC3
I/OI/OI/OI/OI/OI/OI/OI/O
STSTSTSTSTSTSTST
ICD Primary Communication Channel data input/output pin.ICD Primary Communication Channel clock input/output pin.ICD Secondary Communication Channel data input/output pin.ICD Secondary Communication Channel clock input/output pin.ICD Tertiary Communication Channel data input/output pin.ICD Tertiary Communication Channel clock input/output pin.ICD Quaternary Communication Channel data input/output pin.ICD Quaternary Communication Channel clock input/output pin.
IC1, IC2, IC7, IC8
I ST Capture inputs 1, 2, 7 and 8.
INDXQEA
QEB
II
I
STST
ST
Quadrature Encoder Index Pulse input.Quadrature Encoder Phase A input in QEI mode. Auxiliary Timer External Clock/Gate input in Timer mode.Quadrature Encoder Phase B input in QEI mode. Auxiliary Timer External Clock/Gate input in Timer mode.
INT0INT1INT2
III
STSTST
External interrupt 0.External interrupt 1.External interrupt 2.
FLTAPWM1LPWM1HPWM2LPWM2HPWM3LPWM3H
IOOOOOO
ST
PWM Fault A input.PWM1 low output. PWM1 high output.PWM2 low output.PWM2 high output.PWM3 low output.PWM3 high output.
MCLR I/P ST Master Clear (Reset) input or programming voltage input. This pin is an active-low Reset to the device.
OCFAOC1, OC2
IO
ST
Compare Fault A input (for Compare channels 1, 2, 3 and 4).Compare outputs 1 and 2.
Legend: CMOS = CMOS compatible input or output Analog = Analog inputST = Schmitt Trigger input with CMOS levels O = Output I = Input P = Power
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OSC1
OSC2
I
I/O
ST/CMOS
Oscillator crystal input. ST buffer when configured in RC mode; CMOS otherwise.Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes.
PGDPGC
I/OI
STST
In-Circuit Serial Programming data input/output pin.In-Circuit Serial Programming clock input pin.
RB0-RB5 I/O ST PORTB is a bidirectional I/O port.RC13-RC15 I/O ST PORTC is a bidirectional I/O port.RD0-RD1 I/O ST PORTD is a bidirectional I/O port.RE0-RE5, RE8
I/O ST PORTE is a bidirectional I/O port.
RF2-RF3 I/O ST PORTF is a bidirectional I/O port.SCK1SDI1SDO1SS1
I/OIOI/O
STSTST
Synchronous serial clock input/output for SPI1.SPI1 Data In.SPI1 Data Out.SPI1 Slave Synchronization
SCLSDA
I/OI/O
STST
Synchronous serial clock input/output for I2C.Synchronous serial data input/output for I2C.
SOSCOSOSCI
OI
ST/CMOS
32 kHz low-power oscillator crystal output. 32 kHz low-power oscillator crystal input. ST buffer when configured in RC mode; CMOS otherwise.
T1CKT2CK
II
STST
Timer1 external clock input.Timer2 external clock input.
U1RXU1TXU1ARXU1ATX
IOIO
STST
UART1 receive.UART1 transmit.UART1 alternate receive.UART1 alternate transmit.
VDD P Positive supply for logic and I/O pins.VSS P Ground reference for logic and I/O pins.VREF+ I Analog Analog voltage reference (high) input.VREF- I Analog Analog voltage reference (low) input.
TABLE 1-2: dsPIC30F4012 I/O PIN DESCRIPTIONS (CONTINUED)
Pin Name Pin TypeBuffer Type Description
Legend: CMOS = CMOS compatible input or output Analog = Analog inputST = Schmitt Trigger input with CMOS levels O = Output I = Input P = Power
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NOTES:
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2.0 CPU ARCHITECTURE OVERVIEW
2.1 Core OverviewThe core has a 24-bit instruction word. The ProgramCounter (PC) is 23 bits wide with the Least Significantbit (LSb) always clear (see Section 3.1 ProgramAddress Space), and the Most Significant bit (MSb)is ignored during normal program execution, except forcertain specialized instructions. Thus, the PC canaddress up to 4M instruction words of user programspace. An instruction prefetch mechanism is used tohelp maintain throughput. Program loop constructs,free from loop count management overhead, aresupported using the DO and REPEAT instructions, bothof which are interruptible at any point.
The working register array consists of 16x16-bitregisters, each of which can act as data, address or off-set registers. One working register (W15) operates asa software Stack Pointer for interrupts and calls.
The data space is 64 Kbytes (32K words) and is split intotwo blocks, referred to as X and Y data memory. Eachblock has its own independent Address Generation Unit(AGU). Most instructions operate solely through the Xmemory, AGU, which provides the appearance of a sin-gle, unified data space. The Multiply-Accumulate (MAC)class of dual source DSP instructions operate throughboth the X and Y AGUs, splitting the data address spaceinto two parts (see Section 3.2 Data AddressSpace). The X and Y data space boundary is device-specific and cannot be altered by the user. Each dataword consists of 2 bytes, and most instructions canaddress data either as words or bytes.
There are two methods of accessing data stored inprogram memory:
The upper 32 Kbytes of data space memory can be mapped into the lower half (user space) of program space at any 16K program word boundary, defined by the 8-bit Program Space Visibility Page (PSV-PAG) register. This lets any instruction access pro-gram space as if it were data space, with a limitation that the access requires an additional cycle. Moreover, only the lower 16 bits of each instruction word can be accessed using this method.
SWWLinear indirect access of 32K word pages within program space is also possible, using any working register via table read and write instruc-tions. Table read and write instructions can be used to access all 24 bits of an instruction word.
Overhead-free circular buffers (Modulo Addressing)are supported in both X and Y address spaces. This isprimarily intended to remove the loop overhead forDSP algorithms.
The X AGU also supports Bit-Reversed Addressing ondestination effective addresses, to greatly simplify inputor output data reordering for radix-2 FFT algorithms.Refer to Section 4.0 Address Generator Units fordetails on Modulo and Bit-Reversed Addressing.
The core supports Inherent (no operand), Relative, Lit-eral, Memory Direct, Register Direct, Register Indirect,Register Offset and Literal Offset Addressing modes.Instructions are associated with predefined addressingmodes, depending upon their functional requirements.
For most instructions, the core is capable of executinga data (or program data) memory read, a working reg-ister (data) read, a data memory write and a program(instruction) memory read per instruction cycle. As aresult, 3-operand instructions are supported, allowingC = A + B operations to be executed in a single cycle.
A DSP engine has been included to significantlyenhance the core arithmetic capability and throughput.It features a high-speed, 17-bit by 17-bit multiplier, a40-bit ALU, two 40-bit saturating accumulators and a40-bit bidirectional barrel shifter. Data in the accumula-tor, or any working register, can be shifted up to 16 bitsright or 16 bits left in a single cycle. The DSP instruc-tions operate seamlessly with all other instructions andhave been designed for optimal real-time performance.The MAC class of instructions can concurrently fetchtwo data operands from memory, while multiplying twoW registers. To enable this concurrent fetching of dataoperands, the data space has been split for theseinstructions and is linear for all others. This has beenachieved in a transparent and flexible manner bydedicating certain working registers to each addressspace for the MAC class of instructions.
The core does not support a multi-stage instructionpipeline. However, a single-stage instruction prefetchmechanism is used, which accesses and partiallydecodes instructions a cycle ahead of execution in orderto maximize available execution time. Most instructionsexecute in a single cycle with certain exceptions.
The core features a vectored exception processingstructure for traps and interrupts, with 62 independentvectors. The exceptions consist of up to 8 traps (ofwhich 4 are reserved) and 54 interrupts. Each interruptis prioritized based on a user-assigned priority between1 and 7 (1 being the lowest priority and 7 being thehighest) in conjunction with a predetermined naturalorder. Traps have fixed priorities, ranging from 8 to 15.
Note: This data sheet summarizes features ofthis group of dsPIC30F devices and is notintended to be a complete referencesource. For more information on the CPU,peripherals, register descriptions andgeneral device functionality, refer to thedsPIC30F Family Reference Manual(DS70046). For more information on thedevice instruction set and programming,refer to the 16-bit MCU and DSCReference Manual (DS70157).
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2.2 Programmers ModelThe programmers model is shown in Figure 2-1 andconsists of 16x16-bit working registers (W0 throughW15), 2x40-bit accumulators (ACCA and ACCB),STATUS register (SR), Data Table Page register(TBLPAG), Program Space Visibility Page register(PSVPAG), DO and REPEAT registers (DOSTART,DOEND, DCOUNT and RCOUNT) and Program Coun-ter (PC). The working registers can act as data,address or offset registers. All registers are memorymapped. W0 acts as the W register for file registeraddressing.
Some of these registers have a shadow register asso-ciated with each of them, as shown in Figure 2-1. Theshadow register is used as a temporary holding registerand can transfer its contents to or from its host registerupon the occurrence of an event. None of the shadowregisters are accessible directly. The following rulesapply for transfer of registers into and out of shadows.
PUSH.S and POP.S W0, W1, W2, W3, SR (DC, N, OV, Z and C bits only) are transferred.
DO instruction DOSTART, DOEND, DCOUNT shadows are pushed on loop start and popped on loop end.
When a byte operation is performed on a workingregister, only the Least Significant Byte of the targetregister is affected. However, a benefit of memorymapped working registers is that both the Least andMost Significant Bytes can be manipulated throughbyte wide data memory space accesses.
2.2.1 SOFTWARE STACK POINTER/ FRAME POINTER
The dsPIC Digital Signal Controllers contain a softwarestack. W15 is the dedicated software Stack Pointer(SP) and is automatically modified by exception pro-cessing and subroutine calls and returns. However,W15 can be referenced by any instruction in the samemanner as all other W registers. This simplifies thereading, writing and manipulation of the Stack Pointer(e.g., creating stack frames).
W15 is initialized to 0x0800 during a Reset. The usermay reprogram the SP during initialization to anylocation within data space.
W14 has been dedicated as a Stack Frame Pointer asdefined by the LNK and ULNK instructions. However,W14 can be referenced by any instruction in the samemanner as all other W registers.
2.2.2 STATUS REGISTERThe dsPIC DSC core has a 16-bit STATUS register (SR),the Least Significant Byte of which is referred to as theSR Low Byte (SRL) and the Most Significant Byte as theSR High Byte (SRH). See Figure 2-1 for SR layout.
SRL contains all the DSP ALU operation Status flags(including the Z bit), as well as the CPU Interrupt Prior-ity Level Status bits, IPL, and the Repeat ActiveStatus bit, RA. During exception processing, SRL isconcatenated with the MSB of the PC to form acomplete word value which is then stacked.
The upper byte of the SR register contains the DSPAdder/Subtracter Status bits, the DO Loop Active bit(DA) and the Digit Carry (DC) Status bit.
2.2.3 PROGRAM COUNTERThe Program Counter is 23 bits wide. Bit 0 is alwaysclear; therefore, the PC can address up to 4Minstruction words.
Note: In order to protect against misalignedstack accesses, W15 is always clear.
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FIGURE 2-1: dsPIC30F4011/4012 PROGRAMMERS MODEL
TABPAG
PC22 PC0
7 0
D0D15
Program Counter
Data Table Page Address
STATUS Register
Working Registers
DSP OperandRegisters
W1
W2
W3
W4
W5
W6W7
W8
W9
W10
W11
W12/DSP Offset
W13/DSP Write-Back
W14/Frame Pointer
W15/Stack Pointer
DSP AddressRegisters
AD39 AD0AD31
DSPAccumulators
ACCAACCB
PSVPAG7 0
Program Space Visibility Page Address
Z
0
OA OB SA SB
RCOUNT15 0
REPEAT Loop Counter
DCOUNT15 0
DO Loop Counter
DOSTART 22 0
DO Loop Start Address
IPL2 IPL1
SPLIM Stack Pointer Limit Register
AD15
SRL
PUSH.S Shadow
DO Shadow
OAB SAB
15 0 Core Configuration Register
Legend
CORCON
DA DC RA N
TBLPAG
PSVPAG
IPL0 OV
W0/WREG
SRH
DO Loop End AddressDOEND 22
C
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2.3 Divide SupportThe dsPIC DSCs feature a 16/16-bit signed fractionaldivide operation, as well as 32/16-bit and 16/16-bitsigned and unsigned integer divide operations, in theform of single instruction iterative divides. The followinginstructions and data sizes are supported:
1. DIVF 16/16 signed fractional divide2. DIV.sd 32/16 signed divide3. DIV.ud 32/16 unsigned divide4. DIV.s 16/16 signed divide5. DIV.u 16/16 unsigned divide
The divide instructions must be executed within aREPEAT loop. Any other form of execution (e.g. a seriesof discrete divide instructions) will not function correctlybecause the instruction flow depends on RCOUNT. Thedivide instruction does not automatically set up theRCOUNT value and it must, therefore, be explicitly andcorrectly specified in the REPEAT instruction, as shown inTable 2-1 (REPEAT executes the target instruction{operand value + 1} times). The REPEAT loop count mustbe set up for 18 iterations of the DIV/DIVF instruction.Thus, a complete divide operation requires 19 cycles.
TABLE 2-1: DIVIDE INSTRUCTIONS
2.4 DSP EngineThe DSP engine consists of a high-speed, 17-bit x17-bit multiplier, a barrel shifter and a 40-bit adder/subtracter (with two target accumulators, round andsaturation logic).
The dsPIC30F devices have a single instruction flowwhich can execute either DSP or MCU instructions.Many of the hardware resources are shared betweenthe DSP and MCU instructions. For example, theinstruction set has both DSP and MCU multiplyinstructions which use the same hardware multiplier.
The DSP engine also has the capability to performinherent accumulator-to-accumulator operations whichrequire no additional data. These instructions are ADD,SUB and NEG.
The DS0 engine has various options selected throughvarious bits in the CPU Core Configuration register(CORCON), as listed below:
1. Fractional or integer DSP multiply (IF).2. Signed or unsigned DSP multiply (US).3. Conventional or convergent rounding (RND).4. Automatic saturation on/off for ACCA (SATA).5. Automatic saturation on/off for ACCB (SATB).6. Automatic saturation on/off for writes to data
memory (SATDW).7. Accumulator Saturation mode selection
(ACCSAT).
A block diagram of the DSP engine is shown inFigure 2-2.
Note: The divide flow is interruptible. However,the user needs to save the context asappropriate.
Instruction Function
DIVF Signed fractional divide: Wm/Wn W0; Rem W1DIV.sd Signed divide: (Wm + 1:Wm)/Wn W0; Rem W1DIV.s Signed divide: Wm/Wn W0; Rem W1DIV.ud Unsigned divide: (Wm + 1:Wm)/Wn W0; Rem W1DIV.u Unsigned divide: Wm/Wn W0; Rem W1
Note: For CORCON layout, see Table 3-3.
TABLE 2-2: DSP INSTRUCTION SUMMARY
Instruction Algebraic Operation
CLR A = 0ED A = (x y)2
EDAC A = A + (x y)2
MAC A = A + (x * y)MOVSAC No change in AMPY A = x * yMPY.N A = x * yMSC A = A x * y
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FIGURE 2-2: DSP ENGINE BLOCK DIAGRAM
Zero Backfill
Sign-Extend
BarrelShifter
40-bit Accumulator A40-bit Accumulator B
RoundLogic
X D
ata
Bus
To/From W Array
Adder
Saturate
Negate
32
3233
16
16 16
16
4040
40 40
Saturate
Y D
ata
Bus
40
Carry/Borrow Out
Carry/Borrow In
16
40
Multiplier/Scaler17-bit
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2.4.1 MULTIPLIERThe 17x17-bit multiplier is capable of signed orunsigned operation and can multiplex its output using ascaler to support either 1.31 fractional (Q31) or 32-bitinteger results. Unsigned operands are zero-extendedinto the 17th bit of the multiplier input value. Signedoperands are sign-extended into the 17th bit of the mul-tiplier input value. The output of the 17x17-bit multiplier/scaler is a 33-bit value, which is sign-extended to40 bits. Integer data is inherently represented as asigned twos complement value, where the MSB isdefined as a sign bit. Generally speaking, the range ofan N-bit twos complement integer is -2N-1 to 2N-1 1.For a 16-bit integer, the data range is -32768 (0x8000)to 32767 (0x7FFF), including 0. For a 32-bit integer, thedata range is -2,147,483,648 (0x8000 0000) to2,147,483,645 (0x7FFF FFFF).
When the multiplier is configured for fractional multipli-cation, the data is represented as a twos complementfraction, where the MSB is defined as a sign bit and theradix point is implied to lie just after the sign bit(QX format). The range of an N-bit twos complementfraction with this implied radix point is -1.0 to (1-21-N).For a 16-bit fraction, the Q15 data range is -1.0(0x8000) to 0.999969482 (0x7FFF), including 0, andhas a precision of 3.01518x10-5. In Fractional mode, a16x16 multiply operation generates a 1.31 product,which has a precision of 4.65661x10-10.
The same multiplier is used to support the DSC multiplyinstructions, which include integer 16-bit signed,unsigned and mixed sign multiplies.
The MUL instruction may be directed to use byte orword-sized operands. Byte operands direct a 16-bitresult, and word operands direct a 32-bit result to thespecified register(s) in the W array.
2.4.2 DATA ACCUMULATORS AND ADDER/SUBTRACTER
The data accumulator consists of a 40-bit adder/subtracter with automatic sign extension logic. Itcan select one of two accumulators (A or B) as itspre-accumulation source and post-accumulation desti-nation. For the ADD and LAC instructions, the data to beaccumulated or loaded can be optionally scaled via thebarrel shifter, prior to accumulation.
2.4.2.1 Adder/Subtracter, Overflow and Saturation
The adder/subtracter is a 40-bit adder with an optionalzero input into one side and either true or complementdata into the other input. In the case of addition, thecarry/borrow input is active-high and the other input istrue data (not complemented), whereas in the case ofsubtraction, the carry/borrow input is active-low and theother input is complemented. The adder/subtractergenerates Overflow Status bits, SA/SB and OA/OB,which are latched and reflected in the STATUS register.
Overflow from bit 39: this is a catastrophic overflow in which the sign of the accumulator is destroyed.
Overflow into guard bits 32 through 39: this is a recoverable overflow. This bit is set whenever all the guard bits are not identical to each other.
The adder has an additional saturation block whichcontrols accumulator data saturation, if selected. Ituses the result of the adder, the Overflow Status bitsdescribed above, and the SATA/B (CORCON)and ACCSAT (CORCON) mode control bits todetermine when and to what value to saturate.
Six STATUS register bits have been provided tosupport saturation and overflow; they are:
1. OA: ACCA overflowed into guard bits. 2. OB: ACCB overflowed into guard bits.3. SA: ACCA saturated (bit 31 overflow and
saturation).orACCA overflowed into guard bits and saturated(bit 39 overflow and saturation).
4. SB: ACCB saturated (bit 31 overflow andsaturation).orACCB overflowed into guard bits and saturated(bit 39 overflow and saturation).
5. OAB: Logical OR of OA and OB.6. SAB: Logical OR of SA and SB.
The OA and OB bits are modified each time datapasses through the adder/subtracter. When set, theyindicate that the most recent operation has overflowedinto the accumulator guard bits (bits 32 through 39).Also, the OA and OB bits can optionally generate anarithmetic warning trap when set and thecorresponding Overflow Trap Flag Enable bit (OVATE,OVBTE) in the INTCON1 register (refer to Section 5.0Interrupts) is set. This allows the user to takeimmediate action, for example, to correct system gain.
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The SA and SB bits are modified each time data passesthrough the adder/subtracter but can only be cleared bythe user. When set, they indicate that the accumulatorhas overflowed its maximum range (bit 31 for 32-bitsaturation or bit 39 for 40-bit saturation) and is saturated(if saturation is enabled). When saturation is notenabled, SA and SB default to bit 39 overflow and thusindicate that a catastrophic overflow has occurred. If theCOVTE bit in the INTCON1 register is set, SA and SBbits generate an arithmetic warning trap when saturationis disabled.
The overflow and saturation Status bits can optionallybe viewed in the STATUS register (SR) as the logicalOR of OA and OB (in bit OAB) and the logical OR of SAand SB (in bit SAB). This allows programmers to checkone bit in the STATUS register to determine if eitheraccumulator has overflowed, or one bit to determine ifeither accumulator has saturated. This would be usefulfor complex number arithmetic which typically usesboth the accumulators.
The device supports three Saturation and Overflowmodes:
1. Bit 39 Overflow and Saturation:When bit 39 overflow and saturation occurs, thesaturation logic loads the maximally positive 9.31(0x7FFFFFFFFF) or maximally negative 9.31value (0x8000000000) into the targetaccumulator. The SA or SB bit is set andremains set until cleared by the user. This isreferred to as super saturation and providesprotection against erroneous data or unexpectedalgorithm problems (e.g., gain calculations).
2. Bit 31 Overflow and Saturation:When bit 31 overflow and saturation occurs, thesaturation logic then loads the maximally posi-tive 1.31 value (0x007FFFFFFF) or maximallynegative 1.31 value (0x0080000000) into thetarget accumulator. The SA or SB bit is set andremains set until cleared by the user. When thisSaturation mode is in effect, the guard bits are notused (so the OA, OB or OAB bits are never set).
3. Bit 39 Catastrophic OverflowThe bit 39 overflow Status bit from the adder isused to set the SA or SB bit, which remain setuntil cleared by the user. No saturation operationis performed and the accumulator is allowed tooverflow (destroying its sign). If the COVTE bit inthe INTCON1 register is set, a catastrophicoverflow can initiate a trap exception.
2.4.2.2 Accumulator Write-BackThe MAC class of instructions (with the exception ofMPY, MPY.N, ED and EDAC) can optionally write arounded version of the high word (bits 31 through 16)of the accumulator that is not targeted by the instructioninto data space memory. The write is performed acrossthe X bus into combined X and Y address space. Thefollowing addressing modes are supported:
1. W13, Register Direct:The rounded contents of the non-targetaccumulator are written into W13 as a1.15 fraction.
2. [W13]+ = 2, Register Indirect with Post-Increment:The rounded contents of the non-target accumu-lator are written into the address pointed to byW13 as a 1.15 fraction. W13 is thenincremented by 2 (for a word write).
2.4.2.3 Round LogicThe round logic is a combinational block, which per-forms a conventional (biased) or convergent (unbiased)round function during an accumulator write (store). TheRound mode is determined by the state of the RND bitin the CORCON register. It generates a 16-bit, 1.15 datavalue which is passed to the data space write saturationlogic. If rounding is not indicated by the instruction, atruncated 1.15 data value is stored and the leastsignificant word is simply discarded.
Conventional rounding takes bit 15 of the accumulator,zero-extends it and adds it to the ACCxH word (bits 16through 31 of the accumulator). If the ACCxL word (bits0 through 15 of the accumulator) is between 0x8000and 0xFFFF (0x8000 included), ACCxH is incre-mented. If ACCxL is between 0x0000 and 0x7FFF,ACCxH is left unchanged. A consequence of this algo-rithm is that over a succession of random roundingoperations, the value tends to be biased slightlypositive.
Convergent (or unbiased) rounding operates in thesame manner as conventional rounding, except whenACCxL equals 0x8000. If this is the case, the LSb(bit 16 of the accumulator) of ACCxH is examined. If itis 1, ACCxH is incremented. If it is 0, ACCxH is notmodified. Assuming that bit 16 is effectively random innature, this scheme removes any rounding bias thatmay accumulate.
The SAC and SAC.R instructions store either a trun-cated (SAC) or rounded (SAC.R) version of the contentsof the target accumulator to data memory, via the X bus(subject to data saturation, see Section 2.4.2.4 DataSpace Write Saturation). Note that for the MAC classof instructions, the accumulator write-back operationfunctions in the same manner, addressing combinedDSC (X and Y) data space though the X bus. For thisclass of instructions, the data is always subject torounding.
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2.4.2.4 Data Space Write SaturationIn addition to adder/subtracter saturation, writes to dataspace may also be saturated, but without affecting thecontents of the source accumulator. The data space writesaturation logic block accepts a 16-bit, 1.15 fractionalvalue from the round logic block as its input, together withoverflow status from the original source (accumulator)and the 16-bit round adder. These are combined andused to select the appropriate 1.15 fractional value asoutput to write to data space memory.
If the SATDW bit in the CORCON register is set, data(after rounding or truncation) is tested for overflow andadjusted accordingly. For input data greater than0x007FFF, data written to memory is forced to the max-imum positive 1.15 value, 0x7FFF. For input data lessthan 0xFF8000, data written to memory is forced to themaximum negative 1.15 value, 0x8000. The MSb of thesource (bit 39) is used to determine the sign of theoperand being tested.
If the SATDW bit in the CORCON register is not set, theinput data is always passed through unmodified underall conditions.
2.4.3 BARREL SHIFTERThe barrel shifter is capable of performing up to 16-bitarithmetic or logic right shifts, or up to 16-bit left shiftsin a single cycle. The source can be either of the twoDSP accumulators or the X bus (to support multi-bitshifts of register or memory data).
The shifter requires a signed binary value to determineboth the magnitude (number of bits) and direction of theshift operation. A positive value shifts the operand right.A negative value shifts the operand left. A value of 0does not modify the operand.
The barrel shifter is 40 bits wide, thereby obtaining a40-bit result for DSP shift operations and a 16-bit resultfor MCU shift operations. Data from the X bus ispresented to the barrel shifter between bit positions 16to 31 for right shifts, and bit positions 0 to 15 for leftshifts.
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3.0 MEMORY ORGANIZATION
3.1 Program Address SpaceThe program address space is 4M instruction words. Itis addressable by the 23-bit PC, table instructionEffective Address (EA) or data space EA, whenprogram space is mapped into data space as definedby Table 3-1. Note that the program space address isincremented by two between successive programwords in order to provide compatibility with data spaceaddressing.
User program space access is restricted to the lower4M instruction word address range (0x000000 to0x7FFFFE) for all accesses other than TBLRD/TBLWT,which use TBLPAG to determine user or configura-tion space access. In Table 3-1, read/write instructions,bit 23 allows access to the Device ID, the User ID andthe Configuration bits; otherwise, bit 23 is always clear.
FIGURE 3-1: PROGRAM SPACE MEMORY MAP FOR dsPIC30F4011/4012 Note: This data sheet summarizes features of
this group of dsPIC30F devices and is notintended to be a complete referencesource. For more information on the CPU,peripherals, register descriptions andgeneral device functionality, refer to thedsPIC30F Family Reference Manual(DS70046). For more information on thedevice instruction set and programming,refer to the 16-bit MCU and DSCReference Manual (DS70157).
Reset Target Address
Use
r Mem
ory
Spac
e
000000
00007E
000002
000080
Device Configuration
User FlashProgram Memory
008000007FFE
Con
figur
atio
n M
emor
ySp
ace
Data EEPROM
(16K instructions)
(1 Kbyte)
800000
F80000Registers F8000E
F80010
DEVID (2)FEFFFEFF0000FFFFFE
ReservedF7FFFE
Reserved
7FFC007FFBFE
(Read 0s)
8005FE800600
UNITID (32 instr.)
8005BE8005C0
Reset GOTO Instruction
000004
Reserved
7FFFFE
Reserved
0001000000FE000084Alternate Vector Table
Reserved
Interrupt Vector TableVector Tables
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TABLE 3-1: PROGRAM SPACE ADDRESS CONSTRUCTION
FIGURE 3-2: DATA ACCESS FROM PROGRAM SPACE ADDRESS GENERATION
Access Type AccessSpaceProgram Space Address
Instruction Access User 0 PC 0TBLRD/TBLWT User
(TBLPAG = 0)TBLPAG Data EA
TBLRD/TBLWT Configuration (TBLPAG = 1)
TBLPAG Data EA
Program Space Visibility User 0 PSVPAG Data EA
0Program Counter
23 bits
1
PSVPAG Reg
8 bits
EA
15 bits
Program
Using
Select
TBLPAG Reg
8 bits
EA
16 bits
Using
Byte24-bit EA
0
0
1/0
Select
User/Configuration
TableInstruction
ProgramSpace
Counter
Using
Space Select
Note: Program Space Visibility cannot be used to access bits of a word in program memory.
Visibility
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3.1.1 DATA ACCESS FROM PROGRAM
MEMORY USING TABLE INSTRUCTIONS
This architecture fetches 24-bit wide program memory.Consequently, instructions are always aligned. How-ever, as the architecture is modified Harvard, data canalso be present in program space.
There are two methods by which program space canbe accessed; via special table instructions, or throughthe remapping of a 16K word program space page intothe upper half of data space (see Section 3.1.2 DataAccess From Program Memory Using ProgramSpace Visibility). The TBLRDL and TBLWTL instruc-tions offer a direct method of reading or writing the leastsignificant word (lsw) of any address within programspace, without going through data space. The TBLRDHand TBLWTH instructions are the only method wherebythe upper 8 bits of a program space word can beaccessed as data.
The PC is incremented by two for each successive24-bit program word. This allows program memoryaddresses to directly map to data space addresses.Program memory can thus be regarded as two, 16-bitword-wide address spaces, residing side by side, eachwith the same address range. TBLRDL and TBLWTLaccess the space which contains the least significantdata word, and TBLRDH and TBLWTH access the spacewhich contains the Most Significant Byte of data.
Figure 3-2 illustrates how the EA is created for tableoperations and data space accesses (PSV = 1). Here,P refers to a program space word, whereasD refers to a data space word.
A set of table instructions is provided to move byte orword-sized data to and from program space (seeFigure 3-3 and Figure 3-4).
1. TBLRDL: Table Read LowWord: Read the lsw of the program address;P maps to D.Byte: Read one of the LSBs of the program address;P maps to the destination byte when byteselect = 0;P maps to the destination byte when byteselect = 1.
2. TBLWTL: Table Write Low (refer to Section 6.0Flash Program Memory for details on Flashprogramming).
3. TBLRDH: Table Read HighWord: Read the msw of the program address;P maps to D; D will always be = 0.Byte: Read one of the MSBs of the program address;P maps to the destination byte whenbyte select = 0;The destination byte will always be 0 when byteselect = 1.
4. TBLWTH: Table Write High (refer to Section 6.0Flash Program Memory for details on Flashprogramming).
FIGURE 3-3: PROGRAM DATA TABLE ACCESS (LEAST SIGNIFICANT WORD)
0816PC Address
0x0000000x0000020x0000040x000006
230000000000000000
0000000000000000
Program MemoryPhantom Byte(read as 0).
TBLRDL.W
TBLRDL.B (Wn = 1)
TBLRDL.B (Wn = 0)
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FIGURE 3-4: PROGRAM DATA TABLE ACCESS (MOST SIGNIFICANT BYTE)
3.1.2 DATA ACCESS FROM PROGRAM MEMORY USING PROGRAM SPACE VISIBILITY
The upper 32 Kbytes of data space may optionally bemapped into any 16K word program space page. Thisprovides transparent access of stored constant datafrom X data space without the need to use specialinstructions (i.e., TBLRDL/H, TBLWTL/H instructions).
Program space access through the data space occursif the MSb of the data space EA is set and programspace visibility is enabled by setting the PSV bit in theCore Control register (CORCON). The functions ofCORCON are discussed in Section 2.4 DSPEngine.Data accesses to this area add an additional cycle tothe instruction being executed, since two programmemory fetches are required.
Note that the upper half of addressable data space isalways part of the X data space. Therefore, when aDSP operation uses program space mapping to accessthis memory region, Y data space should typically con-tain state (variable) data for DSP operations, whereasX data space should typically contain coefficient(constant) data.
Although each data space address, 0x8000 and higher,maps directly into a corresponding program memoryaddress (see Figure 3-5), only the lower 16 bits of the24-bit program word are used to contain the data. Theupper 8 bits should be programmed to force an illegalinstruction to maintain machine robustness. Forinformation on instruction encoding, refer to the 16-bitMCU and DSC Programmers Reference Manual(DS70157).
Note that by incrementing the PC by 2 for eachprogram memory word, the Least Significant 15 bits ofdata space addresses directly map to the LeastSignificant 15 bits in the corresponding program spaceaddresses. The remaining bits are provided by theProgram Space Visibility Page register, PSVPAG,as shown in Figure 3-5.
For instructions that use PSV which are executedoutside a REPEAT loop:
The following instructions require one instruction cycle in addition to the specified execution time: - MAC class of instructions with data operand
prefetch- MOV instructions- MOV.D instructions
All other instructions require two instruction cycles in addition to the specified execution time of the instruction.
For instructions that use PSV which are executedinside a REPEAT loop:
The following instances require two instruction cycles in addition to the specified execution time of the instruction:- Execution in the first iteration- Execution in the last iteration- Execution prior to exiting the loop due to an
interrupt- Execution upon re-entering the loop after an
interrupt is serviced Any other iteration of the REPEAT loop allows the
instruction, accessing data using PSV, to execute in a single cycle.
0816PC Address
0x0000000x0000020x0000040x000006
230000000000000000
0000000000000000
Program MemoryPhantom Byte(read as 0)
TBLRDH.W
TBLRDH.B (Wn = 1)
TBLRDH.B (Wn = 0)
Note: PSV access is temporarily disabled duringtable reads/writes.
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FIGURE 3-5: DATA SPACE WINDOW INTO PROGRAM SPACE OPERATION
3.2 Data Address SpaceThe core has two data spaces. The data spaces can beconsidered either separate (for some DSP instruc-tions), or as one unified linear address range (for MCUinstructions). The data spaces are accessed using twoAddress Generation Units (AGUs) and separate datapaths.
3.2.1 DATA SPACE MEMORY MAPThe data space memory is split into two blocks, X andY data space. A key element of this architecture is thatY space is a subset of X space, and is fully containedwithin X space. In order to provide an apparent linearaddressing space, X and Y spaces have contiguousaddresses.
When executing any instruction other than one of theMAC class of instructions, the X block consists of the64-Kbyte data address space (including all Yaddresses). When executing one of the MAC class ofinstructions, the X block consists of the 64-Kbyte dataaddress space excluding the Y address block (for datareads only). In other words, all other instructions regardthe entire data memory as one composite addressspace. The MAC class instructions extract the Y addressspace from data space and address it using EAssourced from W10 and W11. The remaining X dataspace is addressed using W8 and W9. Both addressspaces are concurrently accessed only with the MACclass instructions.
A data space memory map is shown in Figure 3-6.
Figure 3-7 illustrates a graphical summary of how Xand Y data spaces are accessed for MCU and DSPinstructions.
23 15 0
PSVPAG(1)15
15
EA = 0
EA = 1
16DataSpaceEA
Data Space Program Space
8
15 23
0x0000
0x8000
0xFFFF
0x00
0x000100
0x007FFE
Data Read
Upper Half of Data Space is Mapped into Program Space
Note: PSVPAG is an 8-bit register containing bits of the program space address (i.e., it defines the page in program space to which the upper half of data space is being mapped).
0x001200AddressConcatenation
BSET CORCON,#2 ; PSV bit setMOV #0x00, W0 ; Set PSVPAG registerMOV W0, PSVPAGMOV 0x9200, W0 ; Access program memory location
; using a data space access
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FIGURE 3-6: dsPIC30F4011/4012 DATA SPACE MEMORY MAP
0x0000
0x07FE
0x0BFE
0xFFFE
LSBAddress16 bits
LSBMSB
MSBAddress
0x0001
0x07FF
0x0BFF
0xFFFF
0x8001 0x8000
OptionallyMappedinto ProgramMemory
0x0FFF 0x0FFE
0x10000x1001
0x0801 0x0800
0x0C01 0x0C00
Near DataSpace
2-KbyteSFR Space
2-Kbyte
SRAM Space
4096 Bytes
Unimplemented (X)X Data
SFR Space
X Data RAM (X)
Y Data RAM (Y)
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FIGURE 3-7: DATA SPACE FOR MCU AND DSP (MAC CLASS) INSTRUCTIONS EXAMPLE
SFR SPACE
(Y SPACE)
X S
PAC
E
SFR SPACE
UNUSED
X S
PAC
EX
SPA
CE
Y SPACE
UNUSED
UNUSED
Non-MAC Class Ops (Read/Write) MAC Class Ops Read-Only
Indirect EA using any W Indirect EA using W8, W9 Indirect EA using W10, W11
MAC Class Ops (Write)
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3.2.2 DATA SPACESThe X data space is used by all instructions and sup-ports all addressing modes. There are separate readand write data buses. The X read data bus is the returndata path for all instructions that view data space ascombined X and Y address space. It is also the Xaddress space data path for the dual operand readinstructions (MAC class). The X write data bus is theonly write path to data space for all instructions.
The X data space also supports Modulo Addressing forall instructions, subject to addressing mode restric-tions. Bit-Reversed Addressing is only supported forwrites to X data space.
The Y data space is used in concert with the X dataspace by the MAC class of instructions (CLR, ED,EDAC, MAC, MOVSAC, MPY, MPY.N and MSC) to pro-vide two concurrent data read paths. No writes occuracross the Y bus. This class of instructions dedicatestwo W register pointers, W10 and W11, to alwaysaddress Y data space, independent of X data space,whereas W8 and W9 always address X data space.Note that during accumulator write-back, the dataaddress space is considered a combination of X and Ydata spaces, so the write occurs across the X bus.Consequently, the write can be to any address in theentire data space.
The Y data space can only be used for the dataprefetch operation associated with the MAC class ofinstructions. It also supports Modulo Addressing forautomated circular buffers. Of course, all other instruc-tions can access the Y data address space through theX data path, as part of the composite linear space.
The boundary between the X and Y data spaces isdefined as shown in Figure 3-6 and is not user-programmable. Should an EA point to data outside itsown assigned address space, or to a location outsidephysical memory, an all-zero word/byte is returned. Forexample, although Y address space is visible by allnon-MAC instructions using any addressing mode, anattempt by a MAC instruction to fetch data from thatspace, using W8 or W9 (X Space Pointers), returns0x0000.
All Effective Addresses (EA) are 16 bits wide and pointto bytes within the data space. Therefore, the dataspace address range is 64 Kbytes or 32K words.
3.2.3 DATA SPACE WIDTHThe core data width is 16-bits. All internal registers areorganized as 16-bit wide words. Data space memory isorganized in byte addressable, 16-bit wide blocks.
3.2.4 DATA ALIGNMENTTo help maintain backward compatibility with PICdevices and improve data space memory usage effi-ciency, the dsPIC30F instruction set supports bothword and byte operations. Data is aligned in data mem-ory and registers as words, but all data space EAsresolve to bytes. Data byte reads read the completeword, which contains the byte, using the LSb of any EAto determine which byte to select. The selected byte isplaced onto the LSB of the X data path (no byteaccesses are possible from the Y data path as the MACclass of instructions can only fetch words). That is, datamemory and registers are organized as two parallelbyte-wide entities, with shared (word) address decode,but separate write lines. Data byte writes only write tothe corresponding side of the array or register whichmatches the byte address.
As a consequence of this byte accessibility, all EffectiveAddress calculations (including those generated by theDSP operations, which are restricted to word-sizeddata) are internally scaled to step through word-alignedmemory. For example, the core would recognize thatPost-Modified Register Indirect Addressing mode,[Ws++], will result in a value of Ws + 1 for byteoperations and Ws + 2 for word operations.
All word accesses must be aligned to an even address.Misaligned word data fetches are not supported, socare must be taken when mixing byte and word opera-tions, or translating from 8-bit MCU code. Should amisaligned read or write be attempted, an addresserror trap is generated. If the error occurred on a read,the instruction underway is completed, whereas if itoccurred on a write, the instruction will be executed butthe write does not occur. In either case, a trap is thenexecuted, allowing the system and/or user to examinethe machine state prior to execution of the addressFault.
FIGURE 3-8: DATA ALIGNMENTTABLE 3-2: EFFECT OF INVALID MEMORY ACCESSES
Attempted Operation Data Returned
EA = an unimplemented address 0x0000W8 or W9 used to access Y data space in a MAC instruction
0x0000
W10 or W11 used to access X data space in a MAC instruction
0x0000
15 8 7 00001
0003
0005
0000
0002
0004
Byte 1 Byte 0
Byte 3 Byte 2
Byte 5 Byte 4
LSBMSB
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All byte loads into any W register are loaded into theLSB; the MSB is not modified.
A sign-extend (SE) instruction is provided to allowusers to translate 8-bit signed data to 16-bit signedvalues. Alternatively, for 16-bit unsigned data, userscan clear the MSB of any W register by executing azero-extend (ZE) instruction on the appropriateaddress.
Although most instructions are capable of operating onword or byte data sizes, it should be noted that someinstructions, including the DSP instructions, operateonly on words.
3.2.5 NEAR DATA SPACEAn 8-Kbyte near data space is reserved in X addressmemory space between 0x0000 and 0x1FFF, which isdirectly addressable via a 13-bit absolute address fieldwithin all memory direct instructions. The remaining Xaddress space and all of the Y address space isaddressable indirectly. Additionally, the whole of X dataspace is addressable using MOV instructions, whichsupport Memory Direct Addressing with a 16-bitaddress field.
3.2.6 SOFTWARE STACKThe dsPIC DSC contains a software stack. W15 is usedas the Stack Pointer.
The Stack Pointer always points to the first availablefree word and grows from lower addresses towardshigher addresses. It pre-decrements for stack pops andpost-increments for stack pushes, as shown inFigure 3-9. Note that for a PC push during any CALLinstruction, the MSB of the PC is zero-extended beforethe push, ensuring that the MSB is always clear.
There is a Stack Pointer Limit register (SPLIM) associ-ated with the Stack Pointer. SPLIM is uninitialized atReset. As is the case for the Stack Pointer, SPLIMis forced to 0, because all stack operations must beword-aligned. Whenever an Effective Address (EA) isgenerated, using W15 as a source or destinationpointer, the address thus generated is compared withthe value in the SPLIM register. If the contents of theStack Pointer (W15) and the SPLIM register are equal,and a push operation is performed, a stack error trapwill not occur. The stack error trap will occur on a sub-sequent push operation. Thus, for example, if it is desir-able to cause a stack error trap when the stack growsbeyond address 0x2000 in RAM, initialize the SPLIMwith the value, 0x1FFE.
Similarly, a Stack Pointer underflow (stack error) trap isgenerated when the Stack Pointer address is found tobe less than 0x0800, thus preventing the stack frominterfering with the Special Function Register (SFR)space.
A write to the SPLIM register should not be immediatelyfollowed by an indirect read operation using W15.
FIGURE 3-9: CALL STACK FRAME
Note: A PC push during exception processingconcatenates the SRL register to the MSBof the PC prior to the push.
PC000000000
015
W15 (before CALL)
W15 (after CALL)
Stac
k G
row
s To
war
dsH
ighe
r Add
ress
PUSH: [W15++]POP: [--W15]
0x0000
PC
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3 Bit 2 Bit 1 Bit 0 Reset State
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 1000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
uuuu uuuu uuuu uuuu
uuuu uuuu uuuu uuuu
0 uuuu uuuu uuuu uuu0
TH 0000 0000 0uuu uuuu0 uuuu uuuu uuuu uuu0
H 0000 0000 0uuu uuuuOV Z C 0000 0000 0000 0000
3 PSV RND IF 0000 0000 0010 0000XWM 0000 0000 0000 0000
0 uuuu uuuu uuuu uuu0
TABLE 3-3: CORE REGISTER MAP(1)
SFR Name Address(Home) Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit
W0 0000 W0/WREGW1 0002 W1W2 0004 W2W3 0006 W3W4 0008 W4W5 000A W5W6 000C W6W7 000E W7W8 0010 W8W9 0012 W9W10 0014 W10W11 0016 W11W12 0018 W12W13 001A W13W14 001C W14W15 001E W15SPLIM 0020 SPLIMACCAL 0022 ACCALACCAH 0024 ACCAHACCAU 0026 Sign Extension (ACCA) ACCAUACCBL 0028 ACCBLACCBH 002A ACCBHACCBU 002C Sign Extension (ACCB) ACCBUPCL 002E PCLPCH 0030 PCHTBLPAG 0032 TBLPAGPSVPAG 0034 PSVPAGRCOUNT 0036 RCOUNTDCOUNT 0038 DCOUNTDOSTARTL 003A DOSTARTLDOSTARTH 003C DOSTARDOENDL 003E DOENDLDOENDH 0040 DOENDSR 0042 OA OB SA SB OAB SAB DA DC IPL2 IPL1 IPL0 RA NCORCON 0044 US EDT DL2 DL1 DL0 SATA SATB SATDW ACCSAT IPLMODCON 0046 XMODEN YMODEN BWM YWMXMODSRT 0048 XSLegend: u = uninitialized bit; = unimplemented bit, read as 0Note 1: Refer to the dsPIC30F Family Reference Manual (DS70046) for descriptions of register bit fields.
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XM 1 uuuu uuuu uuuu uuu1YM 0 uuuu uuuu uuuu uuu0YM 1 uuuu uuuu uuuu uuu1XB uuuu uuuu uuuu uuuuDIS 0000 0000 0000 0000
TASF Bit 2 Bit 1 Bit 0 Reset State
LegNo
ODEND 004A XEODSRT 004C YSODEND 004E YEREV 0050 BREN XBICNT 0052 DISICNT
BLE 3-3: CORE REGISTER MAP(1) (CONTINUED)R Name Address(Home) Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3
end: u = uninitialized bit; = unimplemented bit, read as 0te 1: Refer to the dsPIC30F Family Reference Manual (DS70046) for descriptions of register bit fields.
-
dsPIC30F4011/4012
NOTES:
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4.0 ADDRESS GENERATOR UNITS
The dsPIC DSC core contains two independentaddress generator units: the X AGU and Y AGU. The YAGU supports word-sized data reads for the DSP MACclass of instructions only. The dsPIC Digital SignalController AGUs support three types of dataaddressing:
Linear Addressing Modulo (Circular) Addressing Bit-Reversed Addressing
Linear and Modulo Data Addressing modes can beapplied to data space or program space. Bit-ReversedAddressing is only applicable to data space addresses.
4.1 Instruction Addressing ModesThe addressing modes in Table 4-1 form the basis ofthe addressing modes optimized to support the specificfeatures of individual instructions. The addressingmodes provided in the MAC class of instructions aresomewhat different from those in the other instructiontypes.
4.1.1 FILE REGISTER INSTRUCTIONSMost file register instructions use a 13-bit address field(f) to directly address data present in the first8192 bytes of data memory (near data space). Most fileregister instructions employ a working register, W0,which is denoted as WREG in these instructions. Thedestination is typically either the same file register, orWREG (with the exception of the MUL instruction),which writes the result to a register or register pair. TheMOV instruction allows additional flexibility and canaccess the entire data space during file registeroperation.
4.1.2 MCU INSTRUCTIONSThe three-operand MCU instructions are of the form:
Operand 3 = Operand 1 Operand 2
where Operand 1 is always a working register (i.e., theaddressing mode can only be Register Direct), which isreferred to as Wb. Operand 2 can be a W register,fetched from data memory or a 5-bit literal. The resultlocation can either be a W register or an addresslocation. The following addressing modes aresupported by MCU instructions:
Register Direct Register Indirect Register Indirect Post-Modified Register Indirect Pre-Modified 5-bit or 10-bit Literal
TABLE 4-1: FUNDAMENTAL ADDRESSING MODES SUPPORTED
Note: This data sheet summarizes features ofthis group of dsPIC30F devices and is notintended to be a complete referencesource. For more information on the CPU,peripherals, register descriptions andgeneral device functionality, refer to thedsPIC30F Family Reference Manual(DS70046). For more information on thedevice instruction set and programming,refer to the 16-bit MCU and DSCReference Manual (DS70157).
Note: Not all instructions support all theaddressing modes given above. Individualinstructions may support different subsetsof these addressing modes.
Addressing Mode Description
File Register Direct The address of the file register is specified explicitly.Register Direct The contents of a register are accessed directly.Register Indirect The contents of Wn forms the EA.Register Indirect Post-Modified The contents of Wn forms the EA. Wn is post-modified (incremented or
decremented) by a constant value.Register Indirect Pre-Modified Wn is pre-modified (incremented or decremented) by a signed constant value
to form the EA.Register Indirect with Register Offset The sum of Wn and Wb forms the EA.Register Indirect with Literal Offset The sum of Wn and a literal forms the EA.
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4.1.3 MOVE AND ACCUMULATOR
INSTRUCTIONSMove instructions and the DSP accumulator class ofinstructions provide a greater degree of addressingflexibility than other instructions. In addition to theaddressing modes supported by most MCU instruc-tions, move and accumulator instructions also supportRegister Indirect with Register Offset Addressingmode, also referred to as Register Indexed mode.
In summary, the following addressing modes aresupported by move and accumulator instructions:
Register Direct Register Indirect Register Indirect Post-Modified Register Indirect Pre-Modified Register Indirect with Register Offset (Indexed) Register Indirect with Literal Offset 8-bit Literal 16-bit Literal
4.1.4 MAC INSTRUCTIONSThe dual source operand DSP instructions (CLR, ED,EDAC, MAC, MPY, MPY.N, MOVSAC and MSC), alsoreferred to as MAC instructions, utilize a simplified set ofaddressing modes to allow the user to effectivelymanipulate the Data Pointers through register indirecttables.
The two source operand prefetch registers must bemembers of the set {W8, W9, W10, W11}. For datareads, W8 and W9 will alway