4518 Datasheet, PDF (12/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
IAP2 instruction
Register A
A0
J12
J13
A0
DQ
OP2A instruction
T
Synchronous clock (output)
for serial data transfer
J10
Synchronous clock (input)
J11
for serial data transfer
(Note 1)
P20/SCK
(Note 2)
IAP2 instruction
Register A
A1
J10
A1
DQ
0
OP2A instruction
T
1
Serial data output
(Note 1)
P21/SOUT
(Note 2)
IAP2 instruction
Register A
A2
A2
DQ
OP2A instruction
T
Serial data input
(Note 1)
P22/SIN
(Note 2)
J11
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
Port block diagram (4)
Rev.3.01 2005.06.15 page 12 of 157
REJ03B0008-0301