Hitachi H8S/2678 Series Reference Manual page 337

*
P8n
WDDR8: Write to P8DDR
WDR8: Write to P8DR
RPOR8: Read port 8
RDR8: Read P8DR
n = 2 or 3
Figure 5.42 Port 8 Block Diagram (b) (Pins P82 and P83)
320
Modes 1, 2, 4, 5, 6
Mode 7
Note: * Output enable signal
Priority order: Modes 1, 2, 4, 5, 6, 7 (EXPE = 1)
Reset
R
Q D
P8nDDR
C
WDDR8
Reset
R
Q D
P8nDR
C
System controller
WDR8
EXPE
EXDMA controller
EXDMA transfer end enable
EXDMA transfer end
RDR8
RPOR8
Interrupt controller
ITSn
IRQn
EXDMAC > DR
Mode 7 (EXPE = 0)
DR