HA1835P 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HA1835P

Watchdog Timer

Hitachi -> Renesas Electronics 

HA1835P/HA1848P

Application Circuit Example

VBatt

+ C1

− 10 µF

RSC

0.2 Ω

Q

2SB857D

11 12

10

VCC CS VCONT

6

Vout

RES 13

5 kΩ

+ C2 VReg

− 100 µF

RES VCC

Microcomputer

system

Rf

Cf

GND

4

5

7

Rf

Cf

300 kΩ 0.01 µF

P-RUN 3

I/O port

RR

CR

1

2

RR

CR

560 kΩ 0.1 µF

VCC

P-RUN

RES

System burst

toff tRL

tRH

ton

Reset output signal 3 Hz

Power-on reset signal

8

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