IMP1817 datasheet(34/36 Pages) A1PROS

Part #	IMP1817

Description	Low Power,, 5V - Ressett- Acttiive LOW,, Open--Draiin Outtputt

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	A1PROS [A1 PROs co., Ltd.]

Direct Link	http://www.a1pros.co.kr

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34 / 36 page

408-432-9100/www.impweb.com

1999 IMP, Inc.

IMP1

IMP1233M

233M

Application Information

Operation – Power Monitor

The IMP1233M detects out-of-tolerance power supply conditions.

It resets a processor during power-up and issues a reset to the

system processor when the monitored power supply voltage

is below the reset threshold (power-down). When an out-of-

tolerance VCC voltage is detected, the RESET signal is asserted. On

power-up, RESET is kept active (LOW) for approximately 350ms

after the power supply voltage has reached the selected tolerance.

This allows the power supply and microprocessor to stabilize

before RESET is released.

Figure 1. Timing Diagram: Power-Up

Figure 2. Timing Diagram: Power-Down

VHTL

VCCTP

VLTL

VCC

RESET

tRPU

VOH

1233M_05.eps

VHTL

VCCTP

VLTL

VCC

RESET

VOL

tRPD

1233M_06.eps

IMP1817 Datasheet(PDF) 34 Page - A1 PROs co., Ltd.