4502 Datasheet, PDF (10/116 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4502 Group
Key-on wakeup input
K20
“L” level
detection circuit
Register A
A0
IAP2 instruction
A0
OP2A instruction
D
TQ
Q1
Decoder
Pull-up transistor
PU20
(Note 1)
P20/AIN0 (Note 3)
Analog input
Key-on wakeup input
K21
“L” level
detection circuit
Register A
A1
IAP2 instruction
A1
OP2A instruction
D
TQ
Q1
Decoder
Analog input
Pull-up transistor
PU21
(Note 1)
P21/AIN1 (Note 3)
Register A
Ai
(Note 2)
Ai
IAP3 instruction
D
OP3A instruction _{T Q}
Analog input
Q1
Decoder
(Note 1)
P30/AIN2, P31/AIN3 ^{(Note 3)}
Port block diagram (4)
Notes 1:
This symbol represents a parasitic diode on the port.
2: i represents 0 or 1.
3: Applied potential to ports P2 and P3 must be VDD or less.
Rev.3.01 2005.02.02 page 10 of 112
REJ03B0105-0301