HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 834

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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