HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 418

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table C-1 (d) Port 1 Port Read (Pin P1
Mode
1,2,3,4
7
P1
3
Setting
BRLE = 1
BRLE
= 0
DDR = 0
DDR = 1
Figure C-1 (d) Schematic Diagram of Port 1, Pin P1
DDR = 0
DDR = 1
3
)
RP1
409
Port Read Data
Pin value
Pin value
DR value
Pin value
DR value
Q
P1 DDR
Q
WP1
P1 DR
WP1D
3
Reset
Reset
C
C
3
Mode 1, 2, 3,
or 4
R
R
D
D
WP1D:
WP1:
RP1:
Port 1 control register,
bit 3
3
BREQ to CPU
Q
BRLE
Write to P1DDR
Write to Port 1
Read Port 1