M62021 データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M62021 Datasheet PDF : 9 Pages
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MITSUBISHI<Dig.Ana.INTERFACE>
M62021L,P,FP
SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP
EXPLANATION OF TERMINALS
Pin No.
1
2
3
4
5
6
7
8
Symbol
Name
Function
VOUT
VBAT
VIN
Ct
RES
GND
RES
CS
VIN and VBAT are controlled by means of an internal switch and output
Power supply output
through VOUT
The pin is capable of outputting up to 100mA.Use it as VDD of CMOS RAM
and the like
Backup power supply input Backup power supply is connected to this pin
If a lithium battery is used,insert a resistor in series for safety purposes
Power supply input
+5V input pin.Connect to a logic power supply.
A delay capacitor is connected to this pin.By connecting a capacitor,it is
Delay capacitor connection pin
possible to delay each output
Positive reset output
Connect to the positive reset input of a microcomputer.The pin is capable
of flowing 1mA sink current
Ground
Reference for all signals
Negative reset output Connect to the negative reset input of a microcomputer.The pin is capable
of flowing 1mA sink current
Connect to the chip select of RAM.The CS output is at low level in normal
Chip select output
state thereby letting RAM be active.Under failure or backup condition,the CS
output is set to high level,then RAM enters standby state disabling read/write
function.The pin is capable of flowing a 1mA sink current
APPLICATION EXAMPLE
+5V
(MAIN POWER SUPPLY)
CIN
VIN
3
VDD
CPU
RES 7
RES 5
M62021
R1
D1
+ Com
R2
-
RESET
CIRCUIT
1.24V
DELAY
CIRCUIT
6
GND
VOUT
1
VBAT
2
VIN
VDD
CONT
8 CS
Ct
4
BATTERY CMOS
3V
RAM
*Capacitance to be connected:CIN:10µF;COUT:4.7µF;Ct:4.7µF
*If connecting a zener diode,select one of VZ=2~3V
MITSUBISHI
ELECTRIC
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