MM1099AS datasheet(2/7 Pages) MITSUMI

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MITSUMI

System Reset (Built-in Watch Dog Timer) MM1099

Pin Description

Pin No. Pin name

Function

N.C

GND

VCC

RCT

RESET

Variable terminals TWD, TWR and TPR

TPR (mS) = 5000

CT (µF)

The time for TWD, TWR and TPR to be

TWD (mS) = 500

CT (µF)

determined by the external capacitor.

TWR(mS) = 100

CT (µF)

Clock input terminal Inputs the clock from the logic system.

Ground terminal

Voltage detection

MM1099A

3.2V MM1099B

4.2V

Watchdog timer stop pin Operation modes: Operation

OPEN, Stop

connect to GND

Detect voltage variable terminal

Reset output pin (low output)

Absolute Maximum Ratings

Item

Symbol

Rating

Units

Power supply voltage

VCC max.

-0.3~+10

CK pin input voltage

VCK

-0.3~VCC+0.3 ( <

= +10)

VS pin input voltage

VVS

-0.3~VCC+0.3 ( <

= +10)

Voltage applied to RCT pin

VRCT

-0.3~VCC+0.3 ( <

= +10)

Voltage applied to RESET

----------------------------------------------------

VOH

-0.3~VCC+0.3 ( <

= +10)

Allowable loss

300

Storage temperature

TSTG

-40~+125

°C

Recommended Operating Conditions

Item

Symbol

Rating

Units

Power supply voltage

VCC

+2.2~+7.0

RESET

----------------------------------------------------

sync current

IOL

0~1.0

Clock monitoring time setting

TWD

0.1~1000

Clock rise and fall times

tFC, tRC

<100

µS

TC pin capacitance

0.0002~2

µF

Operating temperature

TOP

-25~+75

°C

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