IMP1233M IMP Inc, IMP1233M Datasheet - Page 4

• Manufacturer Part Number: IMP1233M
• Description: Low Power/ 5V/ P Reset
• Manufacturer: IMP Inc

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-
tolerance V
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.
4
RESET
Application Information
RESET
I M P 1
I M P 1
V
V
CC
CC
Figure 2. Timing Diagram: Power-Down
CC
Figure 1. Timing Diagram: Power-Up
voltage is detected, the RESET signal is asserted. On
2 3 3 M
2 3 3 M
V
HTL
V
CCTP
V
LTL
V
LTL
t
F
V
OL
V
t
RPD
CCTP
V
t
RPU
HTL
t
R
V
OH
408-432-9100/www.impweb.com
1233M_05.eps
1233M_06.eps
2000 © IMP, Inc.
!