IMP1233D Просмотр технического описания (PDF) - IMP, Inc

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IMP1233D

Low Power, 5V µP Reset – Active LOW, Open-Drain Output – 350ms Reset Period

IMP, Inc 

IMP1233D

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.

VCCTP (MIN)

tR

VCCTP (MAX)

VCCTP

VCC

tRPU

VOH

RESET

1233D_06.eps

Figure 1. Timing Diagram: Power-Up

VCC

VCCTP (MAX)

VCCTP

tF

VCCTP (MIN)

RESET

tRPD

VOL

1233D_07.eps

Figure 2. Timing Diagram: Power-Down

4

408-432-9100/www.impweb.com

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