MM1099A 查看數據表（PDF） - Mitsumi
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MM1099A Datasheet PDF : 7 Pages
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MITSUMI
System Reset (Built-in Watch Dog Timer) MM1099
System Reset (Built-in Watch Dog Timer)
Monolithic IC MM1099
Outline
The function of this IC series MM1099 is to accurately reset systems, a generating reset signal at the time of
instantaneous supply voltage off or lowering in varied CPU and other logic system.
Further, with the watch dog timer built-in it can diagnose the operation of the system, intermittently
generating reset pulses when they operate erroneously to prevent runaway.
Features
1. Built-in watch dog timer
2. Low current consumption
130µA TYP.
3. Low operating threshold voltage
VCC=0.8V
4. Watch dog stop function (RCT terminal)
5. Long clock monitoring time
TPR (POWER ON) : TWD (clock monitoring)=1 : 1
6. Fewer outer components
Package
DIP-8B (MM1099AD, MM1099BD)
SOP-8C (MM1099AF, MM1099BF)
SIP-8A (MM1099AS, MM1099BS)
Applications
1. Reset circuit for microcomputers, CPU and MPU.
2. Reset circuit for logic circuitry.
3. Monitoring of microcomputer system, etc.
Pin Assignmemt
8765
1234
SOP-8C/DIP-8B
1
TC
2
N.C
3
CK
4
GND
5
VCC
12345678
6
RCT
7
VS
-----------------------------------------------------------
8
RESET
SIP-8A
1
TC
2
N.C
3
CK
4
GND
5
VCC
6
RCT
7
VS
-----------------------------------------------------------
8
RESET
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