M62023 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M62023 Datasheet PDF : 4 Pages
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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
GENERAL DESCRIPTION
The M62023L/P/FP is a system reset IC that controls the memory
backup function of an SRAM and an embedded RAM of a
microcontroller.
The IC outputs reset signals (RES/RES) to a microcontroller at
power-down and power failure. It also shifts the power supply to
RAMs from main to backup, outputs a signal (CS) that invokes
standby mode, and alters RAMs to backup circuit mode.
FEATURES
• Built-in switch for selection between main power supply and back-
up power supply to RAMs
• Small difference between input and output voltages
(IOUT=80mA, VIN=3V) : 0.15V typ
• Detection voltage (power supply monitor voltage) : 2.57V typ
• Chip select signal output (CS)
• Two channels of reset outputs (RES/RES)
• Power on reset circuit
APPLICATION
Power supply control systems for memory of microcontroller
systems in electronic equipment such as OA equipment,
industrial equipment, and home-use electronic appliances
and SRAM boards with built-in backup function that require
switching between external power supply and battery.
BLOCK DIAGRAM
PIN CONFIGURATION (TOP VIEW)
8 CS
7 RES
6 GND
5 RES
4 Ct
3 VIN
2 VBAT
1 VOUT
Outline 8P5 (L)
VOUT 1
VBAT 2
VIN 3
Ct 4
8 CS
7 RES
6 GND
5 RES
Outline 8P4 (P)
8P2S-A (FP)
VIN 3
R1
R2
RES 7
RES 5
SW
Com
1.24V
RESET
CIRCUIT
DELAY
CIRCUIT
6
GND
( 1 / 4)
1 VOUT
D1
2 VBAT
8 CS
4 Ct
1997.5.30- rev
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