HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 420

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

Table C-1 (f) Port 1 Port Read (Pins P1
Setting
IRQ
or
IRQ
IRQ
or
IRQ
0
1
0
1
P1
E
E
E
E
n
= 1
= 0
Figure C-1 (f) Schematic Diagram of Port 1, Pins P1
DDR = 0
DDR = 1
Port Read Data
Pin value
Pin value
DR value
RP1
5
, P1
411
6
)
Q
Q
P1 DDR
WP1
P1 DR
WP1D
n
Reset
Reset
C
C
n
R
R
D
D
5
and P1
Port 1 control register,
bits 5 and 6
IRQ E
IRQ E
Q
WP1D:
WP1:
RP1:
n:
IRQ , IRQ to CPU
or
0
1
0
6
Write to P1DDR
Write to Port 1
Read Port 1
5 or 6
1