IMP1817 datasheet(10/36 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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10 / 36 page

408-432-9100/www.impweb.com

1999 IMP, Inc.

IMP1

IMP1881111

Application Information

Operation – Power Monitor

The IMP1811 detects out-of-tolerance power supply conditions. It

resets a processor during power-up, power-down and issues a

reset to the system processor when the monitored power supply

voltage is below the reset threshold. When an out-of-tolerance VCC

voltage is detected, the RESET signal is asserted. On power-up,

RESET is kept active (LOW) for approximately 150ms 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

1811_07.eps

VCCTP (MAX)

VCCTP

VCCTP (MIN)

VCC

RESET

VOL

tRPD

1811_08.eps

IMP1817 Datasheet(PDF) 10 Page - A1 PROs co., Ltd.