HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 455

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

C.3 Schematic Diagram of Port 3
Figure C-3 gives a schematic view of the port 3 input/output circuits.
Table C-3 Port 3 Port Read
Mode
1, 2, 3, 4
7
P3
DDR = 0
DDR = 1
n
Mode 1, 2, 3, or 4
Port Read Data
Always reads 1
Pin value
DR value
External address read
Figure C-3 Schematic Diagram of Port 3
Mode 1, 2, 3, or 4
Mode 1, 2, 3,
or 4
Mode 7
Mode 7
Data write
445
RP3
Q
Q
P3 DDR
WP3
P3 DR
WP3D
n
Reset
C
C
Reset
n
R
R
D
D
WP3D:
WP3:
RP3:
n:
Write to P3DDR
Write to Port 3
Read Port 3
0 to 7