Port A Block Diagrams - Hitachi H8/3022 Hardware Manual

C.9 Port A Block Diagrams
PA
n
WPAD: Write to PADDR
WPA: Write to port A
RPA: Read port A
n = 0 or 1
Figure C-9 (a) Port A Block Diagram (Pins PA
648
Reset
R
Q D
PA DDR
n
C
WPAD
Reset
R
Q D
PA DR
n
C
RPA
0
TPC
TPC output
enable
Next data
WPA
Output trigger
ITU
Counter
input
clock
and PA )
1