ASM1816-20 Просмотр технического описания (PDF) - PulseCore Semiconductor

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ASM1816-20

Low Power 3.3V/3.0V µP Reset, Active LOW, Open-Drain Output

PulseCore Semiconductor 

November 2006

rev 1.6

Application Information

Operation - Power Monitor

The ASM1816 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 approximatley 150ms after the power supply

voltage has reached the selected tolerance. This allows the

power supply and microprocessor to stablize before RESET

is released.

VCCTP (MIN)

tR

VCCTP (MAX)

VCCTP

VCC

RESET

ASM1816

tF

VCCTP (MAX)

VCCTP

VCCTP (MIN)

tRPD

VOL

Figure 2: Timing Diagram: Power-Down

VCC

tRPU

RESET

Figure 1: Timing Diagram: Power-Up

VOH

Low Power 3.3V/3.0V µP Reset

Notice: The information in this document is subject to change without notice

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