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參數(shù)資料
| 型號： | ILC1832N |
| 廠商： | Impala Linear Corporation |
| 英文描述： | SWITCH DIP 2POS EXTEND ACT SLD |
| 中文描述： | レP監(jiān)控電路 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 78K |
| 代理商： | ILC1832N |
ILC1832
μP Supervisory Circuit
Impala Linear Corporation
Impala Linear Corporation
1
(408) 574-3939
www.impalalinear.com
October 1999
ILC1832 1.1
The ILC1832 is a multifunction circuit which monitors micro-
processor activity, external reset and power supplies in
microprocessor based systems. Ths circuit functions
include a watchdog timer, power supply monitor, micro-
processor reset, and manual pushbutton reset input.
The power supply line is monitored with a comparator and
an internal voltage reference. RST is forced low when an
out-of-tolerance condition exists and remains asserted for
at least 250ms after V
CC
rises above the threshold voltage
(2.55V or 2.88V). The RST pin will remain logic low with
V
CC
as low as 1.4V.
The Watchdog input (ST) monitors μP activity and will assert
RST if no μP activity has occurred within the watchdog time-
out period. The watchdog timeout period is selectable with
nominal periods of 150, 600, or 1200 milliseconds.
Power OK/Reset Time Delay, 250ms min.
Watchdog Timer, 150 ms, 600ms, or 1.2s Typical
Precision Supply Voltage Monitor, Select Between 5%
or 10% of Supply Voltage
18μA Supply Current
Debounced External Reset Input
8-Pin SOIC or DIP Package
Computers
Controllers
Critical Microprocessor Power Monitoring
Intelligent Instruments
Portable Equipment
ILC1832
V
CC
Top View
PBRST
RST
TD
2
1
8
6
RST
GND
ST
TOL
4
3
5
7
ETC1832N - 8 Lead Plastic DIP Package
ETC1832M - 8 Lead Plastic SOIC Package
ILC1832
μ
P
V
CC
V
CC
V
CC
ST
RESET
PBRST
RST
TD
GND
TOL
I/O
Part
Package
8-Lead PDIP
8-Lead SOIC
Temp. Range
-40°C to +85°C
-40°C to +85°C
ILC1832N
ILC1832M
General Description
Features
Applications
Ordering Information
Typical Circuit
Pin-Package Configurations
Preliminary
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