M62023FP MITSUBISHI, M62023FP Datasheet

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M62023FP

Manufacturer Part Number
M62023FP
Description
System reset IC with switch for memory back-up
Manufacturer
MITSUBISHI
Datasheet

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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.
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-
• Small difference between input and output voltages
• 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.
The IC outputs reset signals (RES/RES) to a microcontroller at
up power supply to RAMs
(I
BLOCK DIAGRAM
OUT
RES
RES
=80mA, V
V
IN
3
7
5
IN
=3V) : 0.15V typ
R
R
1
2
1.24V
Com
SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP
SW
CIRCUIT
RESET
(
1 4
CIRCUIT
DELAY
GND
/
6
)
MITSUBISHI <Dig./Ana.INTERFACE>
PIN CONFIGURATION (TOP VIEW)
V
V
OUT
BAT
V
Ct 4
IN
M62023L,P,FP
Outline 8P4 (P)
1
2
3
D
Outline 8P5 (L)
1
8P2S-A (FP)
8 CS
7 RES
6 GND
5 RES
4 C
3 V
2 V
1 V
1997.5.30- rev
8 CS
7 RES
6 GND
5 RES
IN
BAT
OUT
t
1
4
2
8
V
V
CS
C
OUT
BAT
t

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M62023FP Summary of contents

Page 1

... SRAM boards with built-in backup function that require switching between external power supply and battery. BLOCK DIAGRAM 1.24V 7 RES RES 5 MITSUBISHI <Dig./Ana.INTERFACE> SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP PIN CONFIGURATION (TOP VIEW) SW Com RESET CIRCUIT DELAY CIRCUIT 6 GND ...

Page 2

... RES limit voltage of operation V OPL(RES) Note 1. Regarding conditions to measure V resistor is used. 2. These values are produced inserting an external resistor With no external resistor (10K internal resistance only) MITSUBISHI <Dig./Ana.INTERFACE> SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP (T =25°C, unless otherwise noted) a Conditions T 25° ...

Page 3

... MCU RES or 7 CPU 5 RES MITSUBISHI <Dig./Ana.INTERFACE> SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP V and V are controlled by means of an internal switch and output through IN BAT V . OUT The pin is capable of outputting up to 100 mA. Use and the like. Backup power supply is connected to this pin. ...

Page 4

... V OL(RES) As the state shifts from a logic A logic high is maintained, and low to logic high, the output then shifts to a logic low level becomes the voltage MITSUBISHI <Dig./Ana.INTERFACE> M62023L,P, ...

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