Hitachi H8S/2633 Hardware Manual page 1138

C.5 Port 9 Block Diagram
P9n
Legend
RPOR9
n= 0 to 5
P9n
Legend
RPOR9
n= 6 or 7
Figure C-5 (b) Port 9 Block Diagram (Pins P96 and P97)
1126
: Read port 9
Figure C-5 (a) Port 9 Block Diagram (Pins P90 to P95)
: Read port 9
RPOR9
RPOR9
A/D converter module
Analog input
A/D converter module
Analog input
D/A converter module
Output enable
Analog output