Hitachi H8S/2646 Hardware Manual page 1125

P51
Legend
WDDR5
: Write to P5DDR
WDR5
: Write to P5DR
RDR5
: Read P5DR
RPOR5
: Read port 5
Figure C-5 (c) Port 5 Block Diagram (Pin P51) (H8S/2648, H8S/2648R, H8S/2647)
Reset
R
Q D
P51DDR
C
WDDR5
Reset
R
Q D
P51DR
C
WDR5
SCI module
Serial receive
data enable
RDR5
RPOR5
Serial receive
data TxD2
1093