IC for System Reset (with built-in watchdog timer) MM1096
MITSUMI
IC for System Reset (with built-in watchdog timer)
Monolithic IC MM1096
March 3, 2004
Outline
This IC ensures proper reset by generating a reset signal in the event of momentary cut or drop in power
supply voltage in a variety of CPU systems and other logic systems.
It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by
generating an intermittent reset pulse during system mis-operation.
Features
1.
2.
3.
4.
5.
Built-in watchdog timer
Low minimum operating voltage
130µA typ.
Low operating limit voltage
VCC=0.8V
Watchdog stop function (RCT pin)
Long clock monitoring time
TPR (POWER ON) : TWD (clock monitoring)=1 : 5
6. Few external parts
Package
DIP-8B (MM1096AD, MM1096BD)
SOP-8C (MM1096AF, MM1096BF)
SIP-8A (MM1096AS, MM1096BS)
Applications
1. Reset circuits in microcomputers, CPUs and MPUs
2. Logic circuit reset circuits
3. Microcomputer system monitoring, etc.
Pin Assignment
8
1
7
2
6
3
5
4
DIP-8B/SOP-8C
(TOP VIEW)
1
2
3
4
5
6
7
8
TC
NC
CK
GND
VCC
RCT
VS
RESET
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1 2 3 4 5 6 7 8
SIP-8A
1
2
3
4
5
6
7
8
TC
NC
CK
GND
VCC
RCT
VS
RESET
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