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PST611

System Reset Monolithic IC

Mitsumi 

MITSUMI

System Reset

Monolithic IC PST611

System Reset PST611

Outline

This IC functions in a variety of CPU systems and other logic systems, to constantly monitor power supply

voltage, and to reset the system accurately when power is turned on or interrupted.

System reset ICs have been represented by the PST series in the past, but this IC is able to set no-response

time through an external capacitor, and controls reset output relative to temporary power supply voltage drop

caused by motor load or the like in systems using batteries.

Also, the detection voltage for this IC is set low so that it can respond to systems that operate on low voltage.

Features

1. Low current consumption

2. Low operating limit voltage

3. High reset output

4. No-response time can be controlled

5. 8 types of detection voltages provided

ICCH=2.2µA

0.75V max.

ICCL=3.2µA

PST611

R : 1.6V typ.

S : 1.5V typ.

T : 1.4V typ.

U : 1.3V typ.

V : 1.2V typ.

W : 1.1V typ.

X : 1.0V typ.

Y : 0.9V typ.

Package

MMP-4A (PST611 M)

* contains detection voltage rank.

Applications

1. Reset circuits in microcomputers, CPUs and MPUs

2. Set voltage drop detection

3. Battery voltage check circuits.

4. Voltage detection circuits in general

Absolute Maximum Ratings (Ta=25°C)

Item

Storage temperature

Operating temperature

Power supply voltage

Allowable loss

Symbol

TSTG

TOPR

VCC max.

Pd

Rating

-40~+125

-10~+70

-0.3~+5

200

Units

°C

°C

V

mW

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