8/6/2019 AP Digital

1/3

Q1

CclkenQ2

Q3

Rclk

Q4

Q5

Q6

Cclr

Q7

Q8

G CclkRco

Q1

Clk

Q2

Q3

Q4

Q5

Rst

Q6

Q7

Q8

Q9

Q10

Q11

Q12

P1

Rst

P2

Spe

P3

Ci/Ce

P4P5P6P7P8

Ape

Clk

Zd

Output1

Output2

4M7

PWMMod

uleSchematic

RCDigital

SpeedControl

Anthon

yPsaila1997

Gnd

Vcc

Gnd

Gnd

Gnd

Gnd

Input

Gnd

VccGnd

4MHz

1/6HCF4069

1/6HCF40691/6HC

F4069

1/6HCF4069

1/6HCF4069

1/6HCF4069

1/24013

1/24013

1/44011

1/44011

1/44011

1/44011

4040

74HC590

HCF40103

22p

22p

Gnd

1to2ms

~20ms

0%to100%pwm

B

C

A

D

E

F

+5V

0V

Gnd

Vcc

10uF

+

Gnd

S

D

Q

Clk

!Q

R

S

D

Q

Clk

!Q

R

8/6/2019 AP Digital

2/3

PWMModuleWaveDiagrams

RCDigital

SpeedControl

Anthon

yPsaila1997

Time

0

1ms

2ms

InputA B C D E F

128pulsesnottoscale

128pulsesnottoscale

risingedgelatchesthe

countervalueintoregister

Pulseclearscounter

Bit8goeshigh

Flipflopenabled.Thisensuresthatiftheinputislessthan1ms,the40103gives0output.

Resetpinof40103cannot

beusedasthisforcescountertoFF.

Edgecanmoveoverthisra

nge

Clock

Input Q !Q

Input&!Q

Output

Gnd

Gnd

1/2

4013

1/44011

Input

Clock

Output

S

D

Q

Clk

!Q

R

8/6/2019 AP Digital

3/3

PowerCho

pperandBEC

RCDigital

SpeedControl

Anthon

yPsaila1997

20

2K7

20

20

20

10K

-veMotor

+veMotor

+veBattery

-veBattery

+

fromPWM

Vcc

Vcc

+

LM2576

+5.7V

0V

Vcc

4 2

5

3

1100uF

300uF

100uH

1

N5822

MBR2045

4X

BUZ11orequivalent

ZTX651

ZTX751

9.6Vto16.8V

25A

ZVN4206

1

N4148*seetext

6.2V

toreceiverbatteryinput