
11
32117DS–AVR-01/12
AT32UC3C
3.2
Peripheral Multiplexing on I/O lines
3.2.1
Multiplexed Signals
Each GPIO line can be assigned to one of the peripheral functions. The following table
describes the peripheral signals multiplexed to the GPIO lines.
Table 3-1.
GPIO Controller Function Multiplexing
TQFP
/
QFN
64
TQFP
100
LQFP
144
PIN
G
P
I
O
Supply
Pin
Type
(1)
GPIO function
AB
CD
E
F
1
PA00
0
VDDIO1
x1/x2
CANIF -
TXLINE[1]
22
2
PA01
1
VDDIO1
x1/x2
CANIF -
RXLINE[1]
PEVC -
PAD_EVT
[0]
33
3
PA02
2
VDDIO1
x1/x2
SCIF -
GCLK[0]
PEVC -
PAD_EVT
[1]
44
4
PA03
3
VDDIO1
x1/x2
SCIF -
GCLK[1]
EIC -
EXTINT[1]
7
10
21
PA04
4
VDDANA
x1/x2
ADCIN0
USBC - ID
ACIFA0 -
ACAOUT
8
11
22
PA05
5
VDDANA
x1/x2
ADCIN1
USBC -
VBOF
ACIFA0 -
ACBOUT
9
12
23
PA06
6
VDDANA
x1/x2
ADCIN2
AC1AP1
PEVC -
PAD_EVT
[2]
10
13
24
PA07
7
VDDANA
x1/x2
ADCIN3
AC1AN1
PEVC -
PAD_EVT
[3]
11
14
25
PA08
8
VDDANA
x1/x2
ADCIN4
AC1BP1
EIC -
EXTINT[2]
12
15
26
PA09
9
VDDANA
x1/x2
ADCIN5
AC1BN1
16
27
PA10
10
VDDANA
x1/x2
ADCIN6
EIC -
EXTINT[4]
PEVC -
PAD_EVT
[13]
17
28
PA11
11
VDDANA
x1/x2
ADCIN7
ADCREF1
PEVC -
PAD_EVT
[14]
18
29
PA12
12
VDDANA
x1/x2
AC1AP0
SPI0 -
NPCS[0]
AC1AP0 or
DAC1A
19
30
PA13
13
VDDANA
x1/x2
AC1AN0
SPI0 -
NPCS[1]
ADCIN15
20
31
PA14
14
VDDANA
x1/x2
AC1BP0
SPI1 -
NPCS[0]
21
32
PA15
15
VDDANA
x1/x2
AC1BN0
SPI1 -
NPCS[1]
AC1BN0 or
DAC1B
13
22
33
PA16
16
VDDANA
x1/x2
ADCREF0
DACREF
14
23
34
ADC
REFP
15
24
35
ADC
REFN