HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 183

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

PUCR1 controls whether the MOS pull-up of each of the port 1 pins P1
or off. When a PCR1 bit is cleared to 0, setting the corresponding PUCR1 bit to 1 turns on the
MOS pull-up for the corresponding pin, while clearing the bit to 0 turns off the MOS pull-up.
Upon reset, PUCR1 is initialized to H'00.
Port Mode Register 1 (PMR1)
PMR1 is an 8-bit read/write register, controlling the selection of pin functions for port 1 pins.
Upon reset, PMR1 is initialized to H'04.
Bit 7—P1
P1
Bit 7: IRQ3
0
1
Note: Rising or falling edge sensing can be designated for IRQ
Bit 6—P1
P1
Bit 6: IRQ2
0
1
Note: Rising or falling edge sensing can be designated for IRQ
Bit
Initial value
Read/Write
7
6
/IRQ
or as IRQ
sensing can be designated for TRGV. For details on TRGV settings, see 9.4.2, Register
Descriptions.
3
/TRGV is used as P1
7
6
/IRQ
/IRQ
2
.
3
2
/TRGV Pin Function Switch (IRQ3): This bit selects whether pin
Pin Function Switch (IRQ2): This bit selects whether pin P1
IRQ3
R/W
Description
Functions as P1
Functions as IRQ
Description
Functions as P1
Functions as IRQ
7
0
IRQ2
R/W
7
or as IRQ
6
0
7
6
3
2
I/O pin
I/O pin
/TRGV input pin
input pin
IRQ1
R/W
3
5
0
/TRGV.
PWM
R/W
4
0
—
—
3
0
3
2
. Rising, falling, or both edge
.
7
—
—
2
1
through P1
6
/IRQ
—
—
1
0
4
and P1
2
(initial value)
(initial value)
is used as
TMOW
R/W
0
0
0
is on
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