HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 452

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

Table C-1 (g) Port 1 Port Read (Pin P1
Setting
TRGE or IRQ
TRGE and IRQ
P1
6
1
E = 1
1
E = 0
Figure C-1 (g) Schematic Diagram of Port 1, Pin P1
DDR = 0
DDR = 1
Falling edge
detector
Port Read Data
Pin value
Pin value
DR value
RP1
6
)
442
Q
Q
P1 DDR
WP1
P1 DR
WP1D
6
Reset
Reset
C
C
6
R
R
D
D
System control
register 1, bit 6
A/D control
register, bit 7
IRQ E
Q
Q
WP1D:
WP1:
RP1:
TRGE
IRQ to CPU
ADTRG to A/D converter
6
0
1
Write to P1DDR
Write to Port 1
Read Port 1