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M62021 データシート(PDF) 6 Page - Mitsubishi Electric Semiconductor

部品番号 M62021
部品情報  SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP
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メーカー  MITSUBISHI [Mitsubishi Electric Semiconductor]
ホームページ  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M62021 データシート(HTML) 6 Page - Mitsubishi Electric Semiconductor

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ELECTRIC
MITSUBISHI
M62021L,P,FP
MITSUBISHI<Dig.Ana.INTERFACE>
SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP
6
Input
voltage
Output
pin
In normal operation
VOUT
RES
RES
CS
In failure(instantaneous drop)
Input voltage:5V
With Q4 set to ON,
a voltage
(VIN-VDROP)is output
The output level is
VOL(RES)
with a logic low
The output level is
VOH(RES)
with a logic low
The output level is
VOL(CS)
with a logic low
Input voltage:5V
4V
Each output varies if the input
voltage drops to VSL or under
Q4 is turned OFF.A voltage
(VIN-Q4 VEB(Di) is output by
the diode between E and B of
Q4
As the state shifts from a logic
low to logic high,the output level
becomes approximately equal to
the input voltage
As the state shifts from a logic
high to logic low,the output level
becomes VOL(RES)
As the state shifts from a logic
low to logic high,the output level
becomes the voltage VIN-
Q4EB(Di).
Restoration from failure
(instantaneous drop)
Input voltage:4V
5V
If the input voltage goes higher
than VSL by 100mV,each out-put
varies after delay produced by the
delay circuit
Q4 is turned ON after delay and
a voltage(VIN-VDROP) is output
A logic high is maintained,and than
shifts to a logic high
A logic low is held,and than shifts
to a logic high
A logic high is maintained,and than
shifts to a logic high
In backup state
Input voltage:0V
Backup voltage:3V
VBAT-VF
The output is a logic high
and the output level is
VBAT-VF
TIMING CHART
VIN
0V
VOUT
RES
RES
tpd
tpd
5V
CS
∆Vs
VSH
VSL
V1
V2
V3
V4
V5
V2
V5
V4
VOL(CS)
5V
VIN(VSL)
VOL(RES)
VOL(RES)
VIN(VSL)
VOL(RES)
V1=VIN-VDROP
V2=VIN-Q4VEB(Di)
V3=VIN(VSL)-VDROP
V4=VIN(VSL)-Q4VEB(Di)
V5=VBAT-VF


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