FAH4820 Просмотр технического описания (PDF) - Fairchild Semiconductor

Номер в каталоге

Компоненты Описание

производитель

FAH4820

Direct Driver for DC Motors (ERMs)

Fairchild Semiconductor 

Figure 10 is an example of using Arduino Uno to control

the HEN pin based on which of the three switches is

pressed. In the example program below; when SW1 is

pressed (which is connected to Arduino input pin 10),

the ERM spins once for the length of time the program

holds pin 12 HIGH. The other switches produce a

double pulse (SW2) and a triple pulse (SW3) output.

Due to EMI noise, it is recommended that a 100 pF

capacitor be placed across the MDP and MPN pins. In

this case, this is C3, which greatly reduces EMI

produced by the ERM.

VCC_3V3

C2

100n

C3

U3

FAH4820

1

VDD

2

GND

3

MDP

4

MDN

5

GAIN

10

SCL

9

SDA

8

HEN

7

GND

6

NC

0

1

2

3

4

5

6

7

8

9

10

11

12

13

GND

AREF

100pF

ERM

SW1

R1

SW Momentery

10K

SW2

R2

SW Momentery

10K

SW3

R3

SW Momentery

10K

VCC_3V3

Figure 10. Arduino Uno Control HEN Pin

Vibration Alert Arduino Example Program

/* FAH4820 vibration alert Arduino program*/

int VIBpin = 12;

int switchPin = 8;

int switchPin1 = 9;

int switchPin2 = 10;

void setup()

{

pinMode(VIBpin, OUTPUT);

pinMode(switchPin, INPUT);

pinMode(switchPin1, INPUT);

pinMode(switchPin2, INPUT);

}

void loop()

{

if (digitalRead(switchPin) == HIGH) /* run this sequence if pin 8 is high - triple

pulse*/

{

© 2013 Fairchild Semiconductor Corporation

FAH4820 • 1.0.0

11

www.fairchildsemi.com

Share Link: