IMP1832
Pin Configuration
DIP/SO/MicroSO
PBRST
TD
1
2
3
4
8
7
6
5
V
CC
ST
IMP1832
TOL
RESET
GND
RESET
1832_01.eps
Pin Descriptions
Pin Number
8-Pin Package
Name
Function
1
PBRST
Debounced manual pushbutton reset input
Watchdog time delay selection. (tTD = 150ms for TD = GND, tTD = 610ms for TD = Open,
and tTD =1200ms for TD = VCC
2
TD
)
3
4
5
TOL
GND
Selects 10% (TOL connected to GND) or 20% (TOL connected to VCC) trip point tolerance
Ground
RESET
Active HIGH reset output. RESET is active:
1. If VCC falls below the reset voltage trip point.
2. If PBRST is LOW.
3. If ST is not strobed LOW before the timeout period set by TD expires.
4. During power-up.
6
7
8
RESET
ST
Active LOW reset output. (See RESET)
Strobe Input
VCC
5V power
Ordering Information
Operating Temperature
Range
Maximum Supply
Current (µA)
Voltage Monitoring
Application
Part Number
IMP1832
Package
8-DIP
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
20
20
20
3.3V
3.3V
3.3V
IMP1832S
8-SO
IMP1832SEMA
8-MicroSO
1832_t01.eps
408-432-9100/ www.impweb.com
© 1999 IMP, Inc.
2
IMP [ IMP, INC ]
