142
8.2.4
Pin States
Table 8-4 shows the port 1 pin states in each operating mode.
Table 8-4
Port 1 Pin States
Pins
Reset
Sleep
Subsleep
Standby
Watch
Subactive
Active
P1
7
/
IRQ
3
/TMIF
P1
6
/
IRQ
2
P1
5
/
IRQ
1
/TMIC
P1
4
/
IRQ
4
/
ADTRG
P1
3
/TMIG
P1
2
/TMOFH
P1
1
/TMOFL
P1
0
/TMOW
High-
impedance
Retains
previous
state
Retains
previous
state
High-
impedance
*
Retains
previous
state
Functional
Functional
Note:
*
A high-level signal is output when the MOS pull-up is in the on state.
8.2.5
MOS Input Pull-Up
Port 1 has a built-in MOS input pull-up function that can be controlled by software. When a
PCR1 bit is cleared to 0, setting the corresponding PUCR1 bit to 1 turns on the MOS input pull-up
for that pin. The MOS input pull-up function is in the off state after a reset.
PCR1
n
0
0
1
PUCR1
n
0
1
*
MOS input pull-up
Off
On
Off
(n = 7 to 0)
*
: Don’t care
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