IMP1817 datasheet(30/36 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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30 / 36 page

408-432-9100/www.impweb.com

1999 IMP, Inc.

IMP1

IMP1233D

233D

Application Information

Operation – Power Monitor

The IMP1233D detects out-of-tolerance power supply conditions.

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

tem 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

VCCTP (MAX)

VCCTP

VCCTP (MIN)

VCC

RESET

tRPU

VOH

1233D_06.eps

VCCTP (MAX)

VCCTP

VCCTP (MIN)

VCC

RESET

VOL

tRPD

1233D_07.eps

IMP1817 Datasheet(PDF) 30 Page - A1 PROs co., Ltd.