IMP1

233M

4

408-432-9100/www.impweb.com

Operation – Power Monitor

The IMP1233M detects out-of-tolerance power supply conditions.

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

system processor when the monitored power supply voltage

is below the reset threshold (power-down). When an out-of-

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

RESET

1233M_05.eps

RESET

1233M_06.eps

Application Information