H8S43 Datasheet, PDF (1229/1279 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Appendix C I/O Port Block Diagrams
*1
P33
*2
Reset
R
Q
D
P33DDR
C
WDDR3
Reset
R
Q
D
P33DR
C
WDR3
Reset
R
Q
D
P33ODR
C
WODR3
RODR3
RDR3
SCI module
Serial transmit enable
Serial transmit data
TxD1
RPOR3
IIC1 module
SCL1 output
IIC1 output enable
SCL1 input
Legend:
WDDR3: Write to P3DDR
WDR3: Write to P3DR
WODR3: Write to P3ODR
RDR3: Read P3DR
RPOR3: Read port 3
RODR3: Read P3ODR
Notes: 1. Output enable signal
2. Open drain control signal
Figure C.3 (d) Port 3 Block Diagram (Pin P33)
Rev. 3.00 Jan 11, 2005 page 1173 of 1220
REJ09B0186-0300O