HA16129FPJ View Datasheet(PDF) - Renesas Electronics

Part Name

Description

View to exact match

HA16129FPJ

Single Watchdog Timer

Renesas Electronics 

HA16129FPJ

Block Diagram

VCC

CS

CONT

11

12

13

VOUT

14

To microprocessor

(or other device)

power supply

connections

71k

STBYadj

19

31.2k

1.5V

36.8k

3.3k

−

+

To Vout

STBY detection

block

15

NMIsns

2k

3.3k

NMIadj

70k

16

80k −

+

1.18V

25k

RT

6

NMI detection

block

150mV

+−

1.24V

Voadj

9

Current

limiter

block

Regulator block

S STBY

Q R RES

tON detection

block

SQ

−

+

R

OUTE

block

Overvoltage

detection

block

STBY

20

17

NMI

3.3k

10

OUTE

5

CR

QS

R NMI

If*16

If/6

Cf

3

1

P-RUN

−

+

−

−

+

WDT block

2V

IR

19k

8.4k +

33k

−

20k

IR*4/3

RES block

IR

If

8

GND

4

RR

2

Rf

3.3k

18

RES

CRES

7

Delay circuit block

Note: The current, voltage, and resistor values listed in the diagram are reference values.

: Connect to Vout

Rev.3.00 Jun 15, 2005 page 3 of 22

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