C.3 Port 3 Block Diagrams; Port 3 Block Diagrams - Hitachi H8S/2646 Hardware Manual

C.3

Port 3 Block Diagrams

*1
P30
*2
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 (a) Port 3 Block Diagram (Pin P30)
Reset
R
Q D
P30DDR
C
WDDR3
Reset
R
Q D
P30DR
C
WDR3
Reset
R
Q D
P30ODR
C
WODR3
RODR3
SCI module
Serial transmit enable
Serial transmit data
TxD0
RDR3
RPOR3
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