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8. I/O Ports
8.6.3
Pin Functions
Table 8.15 shows the port 5 pin functions.
Table 8.15 Port 5 Pin Functions
Pin
Pin Functions and Selection Method
P5
/WKP
to
The pin function depends on bit WKPn in PMR5 and bit PCR5
7
7
P5
/WKP
0
0
WKPn
PCR5
Pin function
Legend: * Don't care
Note:
n = 7 to 0
8.6.4
Pin States
Table 8.16 shows the port 5 pin states in each operating mode.
Table 8.16 Port 5 Pin States
Pins
Reset
P5
/WKP
to
High-
7
7
P5
/WKP
impedance
0
0
Note:
*
A high-level signal is output when the MOS pull-up is in the on state.
8.6.5
MOS Input Pull-Up
Port 5 has a built-in MOS input pull-up function that can be controlled by software. When a PCR5
bit is cleared to 0, setting the corresponding PUCR5 bit to 1 turns on the MOS pull-up for that pin.
The MOS pull-up function is in the off state after a reset.
PCR5
n
PUCR5
n
MOS input pull-up
Legend: * Don't care
Note:
n = 7 to 0
Rev.3.00 Jul. 19, 2007 page 200 of 532
REJ09B0397-0300
0
n
P5
input
n
pin
Sleep
Subsleep
Retains
Retains
previous
previous
state
state
0
0
Off
On
0
1
P5
output
n
pin
Standby
Watch
High-
Retains
impedance*
previous
state
1
1
*
Off
in PCR5.
n
1
*
WKP
input pin
n
Subactive Active
Functional Functional
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