4509 Datasheet, PDF (8/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
PORT BLOCK DIAGRAMS
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD ^{(Note 3) FR3j}
instruction
S
RQ
(Note 1)
D0, D1 (Note 2)
(Note 1)
Key-on wakeup input
“L” level
detection circuit
(Note 4)
K2k
Pull-up transistor
PU2k (Note 4)
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD ^{(Note 4) FR3K}
instruction
S
RQ
(Note 1)
(Note 2)
D2/AIN4, D3/AIN5
(Note 1)
Q1
Decoder
Analog input
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD ^{(Note 4) C1k}
instruction
S
RQ
(Note 1)
D4, D5 (Notes 2)
(Note 1)
Port block diagram (1)
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
3: j represents bits 0 or 1.
4: k represents bits 2 or 3.
Rev.1.02 2006.12.22 page 8 of 140
REJ03B0147-0102