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Transcript of Smoke Detector Controller E520 - Mouser · PDF file Smoke Detector Controller E520.32...

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    Features • Designed for network addressable optical

    smoke detectors • 2-wire programmable bus operation with

    8V ... 50V supply • Low quiescent current (88 µA) • Embedded 8-bit micro controller with

    4-KB FLASH (µ-code) and 128 Byte RAM • 28+4 Byte E²PROM for configuration data • Configurable 200mA LED driver • Configurable modulation current (240mA) • Photo current input range: 1.5 ... 45 nA • Input bandpass filter: 0.45 .. 4.5 kHz • Thermistor input • 4 digital general purpose IOs • JTAG debug and programming interface • Minimum number of external components • Complies to Russian norm NPB 58-97

    Applications • Simplifies design of addressable smoke

    detectors required by legislation • Fully programmable smoke detectors with

    minimum of external components

    Brief Functional Description The device provides a high current driver for a transmitter LED and a high impedance I-V conversion for the photo current of the receiver diode. Optimized response of both amplifier and ADC allow short transmitter pulses while keeping high detection efficiency. The amplifier's band pass filter characteristics remove noise from the signal. Transmitter pulses and signal acquisition as well as signal evaluation are controlled by the embedded micro controller allowing the user to take full control over the system performance with the user defined program code running from FLASH memory. The configurable address allows bus operation with up to 255 detectors on one bus.

    Ordering Information Product ID Temperature Range Package

    E520.32 -55°C to +85°C SOIC14

    Typical Operating Circuit

    This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

    ELMOS Semiconductor AG Data Sheet QM-No. 25DS0063E.02, 1 / 77

    Ln 0

    red

    LED1

    100µF 10V

    Detector module

    B us

    RV

    ϑ

    (optional)

    EL M

    O S

    52 0.

    32

    D5 LN24

    DSUP

    DIN

    LED

    RED

    VTSEN

    VTDRV LN0

    Ln 24

    C1:

    PD

    LED2

    RT

    (o pt

    io na

    l)

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    Block Diagram and Application Example

    Fig. 1: Block Diagram

    Symbol Parameter PD SFH2500/FA LED1 SFH4500 LED2 WP710A10LSRD C1 tantalum capacitor 100 uF x 6V, typ B45196-H1107-M309 20% RV resistor 150k, typ B54101 2% RT thermistor 100k, typ B57891M0104 1%

    Table 1: Application Circuit Parameters (proposal)

    Pin Configuration

    Fig. 2: Package top view, not to scale

    This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

    ELMOS Semiconductor AG Data Sheet QM-No. 25DS0063E.02, 2 / 77

    DSUP

    Supply/Reference

    AMP 10 bit ADC

    5 bit DAC

    4

    RT ϑ

    D5

    DIN

    LED

    RED

    VTSEN

    VTDRV

    LN24

    GPIO / JTAG

    LN0

    GPIO / JTAG LED Driver 8 bit uC

    RED AMP

    RED DriverRV

    Alarm Driver Communication

    Transceiver

    4KB FLASH

    128B RAM

    28B+4B E²PROM

    Oscillator

    POR

    PD LED1

    LED2

    C1

    IO0 LN24

    IO3

    D5 RED DIN

    VTDRV DSUP

    LN0 LED

    TEN

    IO2 IO1

    1 14

    7 8 VTSEN

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    Pin Description No Name Type Description 1 LED A_O Transmitter LED driver output 2 LN0 S Negative bus / supply connection , Ground (reference potential) 3 D5 A_O Tank capacitor charging output 4 RED A_IO Indicator red LED driver output and alarm simulation input 5 DIN A_I Receiver diode current input 6 DSUP A_O Receiver diode supply output 7 VTDRV A_O Temperature half bridge driver output 8 VTSEN A_I Temperature measurement channel input 9 TEN D_I Test/debug enable; three level pad; pull down

    10 IO3 D_IO General purpose IO 3 , if TEN=1 JTAG clock (TCK); pull up 11 IO2 D_IO General purpose IO 2 , if TEN=1 JTAG test mode select (TMS); pull

    up 12 IO1 D_IO General purpose IO 1 , if TEN=1 JTAG data input (TDI); pull up 13 IO0 D_IO General purpose IO 0 , if TEN=1 JTAG data output (TDO); pull up 14 LN24 HV_S Positive bus / supply connection

    Explanation of Types: A = Analog, D = Digital, S = Supply, I = Input, O = Output, B = Bidirectional, HV = High Voltage ESD: More details according this topic are described in the "ESD" chapter (ch. 2).

    This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

    ELMOS Semiconductor AG Data Sheet QM-No. 25DS0063E.02, 3 / 77

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    1 Absolute Maximum Ratings Stresses beyond these absolute maximum ratings listed below may cause permanent damage to the device. These are stress ratings only; operation of the device at these or any other conditions beyond those listed in the operational sections of this document is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.

    All voltages referred to V(LN0). Currents flowing into terminals are positive, those drawn out of a terminal are negative. No. Description Condition Symbol Min Max Unit

    1 Bus Supply voltage Continuous VLN24 -0.3 +50 V 2 Bus Supply voltage reverse polarity

    protection, current limitation via pin LN24

    70mA≦

    VLN24 -40 +50 V

    3 Bus Supply voltage tPULSE < 100 ns, tPULSE,PERIOD > 10 µs, max. 75 consecutive pulses (1 burst), tBURST,PERIOD > 300 ms, overvoltage protection

    VLN24 +60 V

    4 Voltage at digital I/O pins VDPIN -0.3 5.5 V 5 Input current at digital pins IDPIN -20 +20 mA 6 Voltage at analog pins VAPIN -0.3 VD5+0.

    3 V

    7 Input current at analog pins IAPIN -20 +20 mA 8 Voltage at pin DIN VAPDIN -0.3 3.6 V 9 Junction temperature J -55 +90 °C 10 Ambient temperature AMB -55 +85 °C 11 Storage temperature 1) STO -55 +90 °C 12 Power dissipation average PTOT,AVG 20 mW

    Table 1-1: Maximum Ratings 1) Storage is not considering packing materials such as tapes, reels, dry packs, foils, etc. Please

    contact ELMOS for packing material specifications. Packaged devices before soldering: For moisture sensitive devices refer to JEDEC standard J-STD-033 for handling and using details. Storage at temperatures > 90°C for more than 96 h may affect the solderability of the devices.

    2 Electro-Static Discharge (ESD) Description Condition Symbol Min Max Unit

    ESD HBM Protection at all Pins 1) VESD(HBM) -2 2 kV

    ESD CDM Protection at all Pins 2) VESD(CDM) -500 500 V

    ESD CDM Protection at Edge Pins 2) VESD(CDM)C -750 750 V 1) According to AEC-Q100-002 (HBM) chip level test: C = 100pF, R = 1.5kΩ 2) According to AEC-Q100-011 (CDM) chip level test

    This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

    ELMOS Semiconductor AG Data Sheet QM-No. 25DS0063E.02, 4 / 77

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    3 Recommended Operating Conditions • Parameters are guaranteed within the range of recommended operating conditions unless otherwise specified. • Operation beyond recommended operating conditions is not qualified and may affect device reliability. • All voltages are referred to V(LN0) = 0V. • Currents flowing into the circuit have positive values.

    No. Description Condition Symbol Min Typ Max Unit 1 Bus supply voltage 1) VLN24 8 24 50 V 2 Operating ambient

    temperature AMB,B -25 75 °C

    3 Extended operating ambient temperature

    VD5 V≧ TH,MON5 AMB,B,EXT -55 85 °C

    4 Photo diode capacitance 2 V V≦ REVERSE ≦ 5 V

    CPD 11 25 pF

    5 External tank capacitor pin D5 to LN0 C1 80 100 330 µF 6 D5 resistive load pin D5 to VTDRV RLOAD 1000 Ω 7 VTDRV sink pulse current t < 50 µs;

    duty cycle < 10-3 IVTDRV 0 6 mA

    8 DSUP source current IDSUP -10 0 µA Table 3-1: Recommended Operating Conditions

    1) During bus communication VLN24 can decrease down to to 0V

    This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

    ELMOS Semiconductor AG Data Sheet QM-No. 25DS0063E.02, 5 / 77

  • Smoke Detector Controller E520.32 Preliminary Information – Oct 09, 2012

    4 Electrical Characteristics

    4.1 Analog Characteristics

    4.1.1 Supply and References (VLN24 = 8V to 50V, Tamb = -25°C to +75°C, unless otherwise noted. Typical values are at VLN24 = 24V and Tamb = +25°C. Positive currents flow into the device pins.)

    No. Description Condition Symbol Min Typ Max Unit Supply Interface

    1 Supply voltage, pin LN24 Normal operation 1)

    VLN24 8 24 50 V

    2 Supply current, pin LN24 SUP_MODE = 00b

    ILN24,0 88 µA

    3 Supply current, pin LN24 SUP_MODE= 01b

    ILN24,1 130 µA

    4 Supply current, pin LN24 SUP_MODE= 10b

    ILN24,2 180 µA

    5 Supply current, pin LN24 SUP_MODE= 11b