SG3546

PRODUCT DA T ABOOK 1996/1997

7

Copyright © 1994

Rev. 1.3

2/96

TYPICAL APPLICATION CIRCUITS

FIGURE 8. — LOW VOLTAGE MICROPROCESSOR RESET

POWER

SUPPLY

1.2 V

REF

RESET

2

1.0k

1

3

FIGURE 9. — VOLTAGE MONITOR

FIGURE 7. — SWITCHING THE LOAD OFF WHEN

BATTERY VOLTAGE REACHES BELOW V

TH

A time-delayed reset can be accomplished with the addition of C

DLY

.

For systems with extremely fast power supply rise times (< 500ns),

it is recommended that the RC

5.0µs. V

POWER

SUPPLY

1.2 V

REF

MICROPROCESSOR

CIRCUIT

RESET

C

DLY

R

2

1

3

1.2 V

REF

LOAD

RESET

2

4

1

t

V

TH(MPU)

V

IN

1 -

1