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4. Port Mode Register 1 (PMR1)
Bit
7
IRQ3
Initial value
0
Read/Write
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: P1
/IRQ
/TMIF pin function switch (IRQ3)
7
3
This bit selects whether pin P1
Bit 7
IRQ3
Description
0
Functions as P1
Functions as IRQ
1
Note: Rising or falling edge sensing can be designated for IRQ
settings, see 3. Timer Control Register F (TCRF) in section 9.4.2.
Bit 6: P1
/IRQ
pin function switch (IRQ2)
6
2
This bit selects whether pin P1
Bit 6
IRQ2
Description
0
Functions as P1
Functions as IRQ
1
Note: Rising or falling edge sensing can be designated for IRQ
6
5
IRQ2
IRQ1
IRQ4
0
0
R/W
R/W
R/W
/IRQ
/TMIF is used as P1
7
3
I/O pin
7
/TMIF input pin
3
is used as P16 or as IRQ
/IRQ
6
2
I/O pin
6
input pin
2
4
3
2
TMIG
TMOFH
0
0
0
R/W
R/W
or as IRQ
/TMIF.
7
3
/TMIF. For details on TMIF
3
.
2
.
2
Rev. 6.00 Aug 04, 2006 page 207 of 680
Section 8 I/O Ports
1
0
TMOFL
TMOW
0
0
R/W
R/W
(initial value)
(initial value)
REJ09B0145-0600
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