HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 383

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

P2DDR—Port 2 Data Direction Register
Bit
Initial value
Read/Write
P1CR—Port 1 Control Register
Bit
Initial value
Read/Write
—
—
—
—
7
1
7
1
IRQ
R/W
Interrupt Request 1 Enable
—
—
6
1
0 P1
1 P1
6
0
1
E
6
6
IRQ
is an I/O port; input is disabled.
is the input pin.
R/W
Interrupt Request 0 Enable
—
—
5
1
5
0
0 P1
1 P1
0
E
P2
5
5
NMIEG
374
R/W
is an I/O port; input is disabled.
is the input pin.
4
Nonmaskable Interrupt Edge
W
4
DDR P2
0
4
0
0 An NMI request is generated on the
1 An NMI request is generated on the
falling edge of the NMI pin input.
rising edge of the NMI pin input.
H'FF81
H'FFFC
BRLE
R/W
3
Bus Release Enable
W
3
0
DDR P2
3
0
0 P1
1 P1
P1
Port 2 Input/Output Selection
0 Input port
1 Output port
2
2
3
and P1
is the output pin and
is the input pin.
2
W
—
—
2
DDR P2
0
2
1
3
are I/O ports.
1
W
—
—
1
0
DDR P2
1
1
Port 2
0
Port 1
W
—
—
0
DDR
0
0
1