Hitachi H8/3048 Hardware Manual page 834

C.4 Port 4 Block Diagram
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P4
n
WP4P: Write to P4PCR
RP4P: Read P4PCR
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
n = 0 to 7
8-bit bus 16-bit bus
mode mode
Mode
Mode 7
1 to 6
Write to external
address
Read external
address
Figure C-4 Port 4 Block Diagram
827
Reset
R
Q D
P4 PCR
n
C
RP4P
WP4P
Reset
R
Q D
P4 DDR
n
C
WP4D
Reset
R
Q D
P4 DR
n
C
WP4
RP4