HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 451

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

Table C-1 (f) Port 1 Port Read (Pin P1
Setting
IRQ
IRQ
0
0
P1
E = 1
E = 0
5
Figure C-1 (f) Schematic Diagram of Port 1, Pin P1
Pin value
DDR = 0
DDR = 1
Port Read Data
Pin value
DR value
RP1
5
)
441
Q
Q
P1 DDR
WP1
P1 DR
WP1D
5
Reset
Reset
C
C
5
R
R
D
D
System control
register 1, bit 5
IRQ E
Q
WP1D:
WP1:
RP1:
IRQ to CPU
5
0
0
Write to P1DDR
Write to Port 1
Read Port 1