Hitachi H8S/2646 Hardware Manual page 1118

*1
P33
*2
Legend
WDDR3
: Write to P3DDR
WDR3
: Write to P3DR
WODR3
: Write to P3ODR
RDR3
: Read P3DR
RPOR3
: Read port 3
RODR3
: Read P3ODR
1086
Notes: *1 Output enable signal
Figure C-3 (d) Port 3 Block Diagram (Pin P33)
Reset
R
Q D
P33DDR
C
WDDR3
Reset
R
Q D
P33DR
C
WDR3
Reset
R
Q D
P33ODR
C
WODR3
RODR3
RDR3
RPOR3
*2 Open drain control signal
SCI module
Serial transmit enable
Serial transmit data
TxD1