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器件描述：レP Supervisory Circuit
器件厂商：MICREL [Micrel Semiconductor]
厂商主页：http://www.micrel.com/
文件大小：164.64KB
文件页数：8
PDF阅读：MIC1832N.pdf (点击阅读器件资料)
摘要：
1
The MIC1832 is a multifunction circuit which monitors
microprocessor activity, external reset and power
supplies in microprocessor based systems. The circuit
functions include a watchdog timer, power supply
monitor, microprocessor 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 ?P activity and will
assert RST if no ?P activity has occurred within the
watchdog timeout period. The watchdog timeout period
is selectable with a nominal periods of 150, 600, or
1200 milliseconds.
K31
K32
K33
K34
K54K44
K54K4FK4C
K47K4EK44
K38
K37
K36
K35
K56K43K43
K52K53K54
K52K53K54
K4DK49K43K31K38K33K32
K50K42K52K53K54
K53K54
MIC1832N - 8 Lead Plastic DIP Package
MIC1832M - 8 Lead Plastic SOIC Package
Part Package Temp. Range
MIC1832N 8-Lead PDIP -40°C to +85°C
MIC1832M 8-Lead SOIC -40°C to +85°C
·
Automotive Systems
·
Intelligent Instruments
·
Critical Microprocessor Power Monitoring
·
Battery Powered Computers
·
Controllers
·
Power OK/Reset Time Delay, 250ms min.
·
Watchdog Timer, 150ms, 600ms, or
1.2s typical
·
Precision Supply Voltage Monitor, Select
Between 5% or 10% of Supply Voltage
·
Available in 8-pin Surface Mount (SO)
·
Debounced External Reset Input
·
Low Supply Current, < 18?A Typ.
K56K43K43
K52K53K54
KB5K50
K52K45K53K45K54
K56K43K43
K4DK49K43K31K38K33K32
K56K43K43
K50K42K52K53K54
K54K4FK4C K47K4EK44
K53K54 K49K2FK4F
K54K44
Typical Operating Circuit
Features
Description Pin Configuration
Ordering Information
Typical Applications
Top View
MIC1832 ?P Supervisory Circuit
MIC1832
?P Supervisory Circuit
相关器件：MIC1832M MIC1832
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