HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 456

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

C.4 Schematic Diagram of Port 4
Figure C-4 gives a schematic view of the port 4 input/output circuits.
Table C-4 Port 4 Port Read
Mode
1, 2, 3, 4
7
P4
n
DDR = 0
DDR = 1
Mode 1, 2, 3, or 4
Port Read Data
DR value
Pin value
DR value
Figure C-4 Schematic Diagram of Port 4
Mode 7
Bus release
Software standby
Fig. C-4
446
RP4
Mode 1, 2, 3, or 4
Q
Q
P4 DDR
WP4D
P4 DR
S
WP4
n
C
C
Reset
Reset
n
R
R
D
D
WP4D:
WP4:
RP4:
n:
Write to P4DDR
Write to Port 4
Read Port 4
0 to 7