ASM1811-10 Просмотр технического описания (PDF) - Alliance Semiconductor

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ASM1811-10

Low Power 5V µP Reset Active LOW, Open - Drain Output

Alliance Semiconductor 

February 2005

rev 1.4

Application Information

Operation - Power Monitor

The ASM1811 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.

VCC

RESET

ASM1811

tF

VCCTP (MAX)

VCCTP

VCCTP (MIN)

tRPD

VCCTP (MIN)

tR

VCCTP (MAX)

VCCTP

VOL

Figure 2: Timing Diagram: Power-Down

VCC

tRPU

VOH

RESET

Figure 1: Timing Diagram: Power-Up

Low Power 5V µP Reset

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

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