HD6475328-CP10 Datasheet, PDF (416/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Appendix C I/O Port Schematic Diagrams
C.1 Schematic Diagram of Port 1
Figure C-1 (a) to (g) gives a schematic view of the port 1 input/output circuits.
Reset
R
QD
P10 DDR
C
WP1D
WP1D: Write to P1DDR
RP1: Read Port 1
P10
ø
RP1
Figure C-1 (a) Schematic Diagram of Port 1, Pin P10
Table C-1 (a) Port 1 Port Read (Pin P10)
Setting
DDR = 0
DDR = 1
Port Read Data
Pin value
ø
Reset
R
QD
P11 DDR
C
WP1D
WP1D: Write to P1DDR
RP1: Read Port 1
P11
E
RP1
Figure C-1 (b) Schematic Diagram of Port 1, Pin P11
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