4501_M Datasheet, PDF (24/212 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4501 Group
HARDWARE
PIN DESCRIPTION
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)
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 port P2 must be VDD or less.
Rev.2.01 Feb 07, 2005
REJ09B0192-0201
1-12