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

4. Watch dog stop function (RCT terminal)

5. Long clock monitoring time

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

14

3

2

85

6

7

SOP-8C/DIP-8B

1

TC

2

N.C

3

CK

4

GND

5

6

RCT

7

8

RESET

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1

TC

2

N.C

3

CK

4

GND

5

6

RCT

7

8

RESET

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SIP-8A

1357

2468