Bit 1: P3
1
/UD pin function switch (SI1)
This bit selects whether pin P3
1
/UD is used as P3
1
or as UD.
Bit 1
UD
Description
0
Functions as P3
1
I/O pin
(initial value)
1
Functions as UD input pin
Bit 0: P3
0
/PWM pin function switch (PWM)
This bit selects whether pin P3
0
/PWM is used as P3
0
or as PWM.
Bit 0
PWM
Description
0
Functions as P3
0
I/O pin
(initial value)
1
Functions as PWM output pin
8.3.3 Pin Functions
Table 8-9 shows the port 3 pin functions.
Table 8-9 Port 3 Pin Functions
Pin
Pin Functions and Selection Method
P3
7
/AEVL
The pin function depends on bit SO1 in PMR3 and bit PCR3
2
in PCR3.
AEVL
0
1
PCR3
7
0
1
*
Pin function
P3
7
input pin
P3
7
output pin
AEVL input pin
P3
6
/AEVH
The pin function depends on bit AEVH in PMR3 and bit PCR36 in PCR3.
AEVH
0
1
PCR3
6
0
1
*
Pin function
P3
6
input pin
P3
6
output pin
AEVH input pin
*:
Don’t care
145