M62023 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC

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M62023

SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP

MITSUBISHI ELECTRIC  

MITSUBISHI <Dig./Ana.INTERFACE>

P R E L I M I N A R Y M62023L,P,FP NSootmicee:Tphairsamisentoritcalimfinitaslasrpeescuifibcjaetciot nto.

change.

SYSTEM

RESET

IC

WITH

SWITCH

FOR

MEMORY

BACK-UP

TIMING CHART

tpd

tpd

3V

VIN

0V

VSH

VSL

∆VS

VOUT

V1

V2

V3

CS

V2

V3

RES

VOL(CS)

3V

VIN(VSL)

RES

VOL(RES)

VOH(RES)

VIN(VSL)

VOL(RES)

V1=VIN-VDROP

V2=VIN-VEB(SW Tr.)

V3=VBAT-VF

Input

voltage

In normal operation

Input voltage : 3V

Output

pin

VOUT

With SW Tr. set to ON, a

voltage (VIN-VDROP) is output

In failure

(instantaneous drop)

Input voltage : 3V 2V

Each output varies if the input

voltage drops to VSL or under

SW Tr. is turned OFF. A

voltage (VIN-VEB) is output by

the diode between E and B of

SW Tr.

Restoration from failure

(instantaneous drop)

In backup state

Input voltage : 2V 3V

If the input voltage goes higher

than VSL by 100mV, each

output varies after delay

produced by the delay circuit

Input voltage : 0V

Backup voltage : 3V

SW Tr. is turned ON after delay VBAT-VF

and a voltage (VIN-VDROP) is

output

RES

The output level is VOL(RES)

with a logic low

As the state shifts from a logic

low to logic high, the output

level becomes approximately

equal to the input voltage

A logic high is maintained, and

then shifts to a logic low

The output level is VOH(RES)

RES with a logic high

As the state shifts from a logic A logic low is maintained, and

high to logic low, the output then shifts to a logic high

level becomes VOL(RES)

The output level is VOL(CS)

CS with a logic low

As the state shifts from a logic

low to logic high, the output

level becomes the voltage

VIN-VEB

A logic high is maintained, and The output is a logic high and

then shifts to a logic low

the output level is VBAT-VF

( 4 / 4)

1997.5.30- rev

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