HD6432633 Datasheet, PDF (1410/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

*1
P37
*2
Reset
R
Q
D
P37DDR
C
WDDR3
Reset
R
Q
D
P37DR
C
WDR3
Reset
R
Q
D
P37ODR
C
WODR3
RODR3
RDR3
SCI module
Serial transmit enable
Serial transmit data
TxD4
RPOR3
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-14 (h) Port 3 Block Diagram (Pin P37)
1356