HD6473887 Datasheet, PDF (151/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

4. Port mode register 1 (PMR1)
Bit
Initial value
Read/Write
7
IRQ3
0
R/W
6
IRQ2
0
R/W
5
IRQ1
0
R/W
4
IRQ4
0
R/W
3
TMIG
0
R/W
2
TMOFH
0
R/W
1
TMOFL
0
R/W
0
TMOW
0
R/W
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'00.
Bit 7: P1₇/IRQ₃/TMIF pin function switch (IRQ3)
This bit selects whether pin P1₇/IRQ₃/TMIF is used as P1₇ or as IRQ₃/TMIF.
Bit 7
IRQ3
Description
0
1
Note:
Functions as P1₇ I/O pin
(initial value)
Functions as IRQ₃/TMIF input pin
Rising or falling edge sensing can be designated for IRQ₃/TMIF. For details on TMIF
settings, see 3. Timer Control Register F (TCRF) in 9.4.2.
Bit 6: P1₆/IRQ₂ pin function switch (IRQ2)
This bit selects whether pin P1₆/IRQ₂ is used as P16 or as IRQ₂.
Bit 6
IRQ2
Description
0
1
Note:
Functions as P1₆ I/O pin
Functions as IRQ₂ input pin
Rising or falling edge sensing can be designated for IRQ₂.
(initial value)
Bit 5: P1₅/IRQ₁/TMIC pin function switch (IRQ1)
This bit selects whether pin P1₅/IRQ₁/TMIC is used as P15 or as IRQ₁/TMIC.
Bit 5
IRQ1
Description
0
1
Note:
Functions as P1₅ I/O pin
Functions as IRQ₁/TMIC input pin
Rising or falling edge sensing can be designated for IRQ₁/TMIC.
For details of TMIC pin setting, see 1. Timer mode register C (TMC) in 9.3.2.
(initial value)
134