HA16113FPJ

2

Pin Arrangement

(Top view)

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

P-RUN1

Cf1

Rf

STBYadj

STBY

RES1

NMI

NMIadj

Re1

Re2

GND

P-RUN2

Cf2

SW

CONT

RES2

CS

Pin Description

Pin No. Symbol

Function

1

P-RUN1

Input from main CPU to watchdog timer 1 (WDT1)

2

Cf1

For connecting capacitor Cf1 to determine WDT1 filter characteristic (frequency band)

3

Rf

For connecting common bias resistor Rf to determine WDT1 and WDT2 filter

characteristics (frequency band), power-on reset time (t

RES2), clock-off time of auto-reset circuits 1 and 2, reset high time (t

low time (t

Use the

resistor value from 100 k

Ω to 500 kΩ.

4C

R1

For connecting capacitor C

of auto-reset circuit 1.

5

STBY adj

For adjusting standby trigger voltage (insert a resistor between this pin and ground)

Recommended range: V

6

STBY

Standby signal output

7

RES1

Reset signal output to main CPU

8

NMI

Low-voltage interrupt signal output for memory backup