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IC
IC505
NAND gate
IC506
Flip-flop
IC507
Voltage detector
Time Chart
Power on
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
Operation
1
5
2
1
CK
PR
Q
CLR
4
Pin 2 (VDD)
> 3.2 V
< 3.2 V
Power off
H (VCC1)
1. PON
L
2. APO
L
H (VCC3)
3. POB
L
4. FACT
L
H (VCC1)
5. Power On
L
H (VCC0)
6. Voltage
detection
— 6 —
7
6
Pin 1 (OUT)
H
L
H (VCC1)
L
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
L
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