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| H83627 Datasheet, PDF (134/381 Pages) Renesas Technology Corp – single-chip microcomputers | |||
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Port Mode Register 1 (PMR1)
Bit
7
6
5
4
3
2
1
0
IRQ3 IRQ2 IRQ1
â
TMIG TMOFH TMOFL TMOW
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
R/W
R/W
â
R/W
R/W
R/W
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 7âP17/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 information about TMIF pin settings, see 9.3.2 (3), Timer Control Register F (TCRF).
Bit 6âP16/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 5âP15/IRQ1 Pin Function Switch (IRQ1): This bit selects whether pin P15/IRQ1 is used as
P15 or as IRQ1.
Bit 5: IRQ1
Description
0
1
Note:
Functions as P15 I/O pin
Functions as IRQ1 input pin
Rising or falling edge sensing can be designated for IRQ1.
(initial value)
Bit 4âReserved Bit: Bit 4 is reserved: it is a always read as 0, and should be used cleared to
0.
121
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