HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 447

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

C.1 Schematic Diagram of Port 1
Figure C-1 (a) to (g) gives a schematic view of the port 1 input/output circuits.
Table C-1 (a) Port 1 Port Read (Pin P1
Setting
DDR = 0
DDR = 1
Appendix C I/O Port Schematic Diagrams
P1
P1
0
Port Read Data
Pin value
ø
1
Figure C-1 (b) Schematic Diagram of Port 1, Pin P1
Figure C-1 (a) Schematic Diagram of Port 1, Pin P1
RP1
RP1
0
)
Q
Q
P1 DDR
P1 DDR
WP1D
WP1D
0
1
Reset
Reset
C
C
R
R
437
D
D
ø
E
WP1D:
RP1:
WP1D:
RP1:
Write to P1DDR
Read Port 1
Write to P1DDR
Read Port 1
0
1