4509 Datasheet, PDF (9/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
Key-on wakeup input
Level
detection circuit
IAP0 instruction
Register A
A0
FR00
A0
D
OP0A instruction T Q
Serial interface data input
Key-on wakeup input
Level
detection circuit
IAP0 instruction
Register A
A1
A1
D
OP0A instruction T Q
Serial interface data output
FR01
J10
0
1
K00
PU00
(Note 1)
P00/SIN (Note 2)
(Note 1)
J11
K01
PU01
(Note 1)
P01/SOUT (Note 2)
(Note 1)
Key-on wakeup input
Level
detection circuit
IAP0 instruction
Register A
A2
A2
D
FR02
OP0A instruction T Q
Synchronous clock (output) for
serial interface data transfer
Synchronous clock (input) for
serial interface data transfer
K02
J10
J11
PU02
(Note 1)
P02/SCK (Note 2)
(Note 1)
Port block diagram (2)
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
Rev.1.02 2006.12.22 page 9 of 140
REJ03B0147-0102