9
32145C–06/2013
AT32UC3L0128/256
13
PA02
2
VDDIO
High-
drive I/O
USART0
RTS
ADCIFB
TRIGGER
USART2
TXD
TC0
A0
PWMA
PWMA[2]
ACIFB
ACBP[0]
USART0
CLK
CAT
CSA[3]
4
PA03
3
VDDIO
Normal
I/O
USART0
CTS
SPI
NPCS[1]
USART2
TXD
TC0
B0
PWMA
PWMA[3]
ACIFB
ACBN[3]
USART0
CLK
CAT
CSB[3]
28
PA04
4
VDDIO
Normal
I/O
SPI
MISO
TWIMS0
TWCK
USART1
RXD
TC0
B1
PWMA
PWMA[4]
ACIFB
ACBP[1]
CAT
CSA[7]
12
PA05
5
VDDIO
Normal
I/O (TWI)
SPI
MOSI
TWIMS1
TWCK
USART1
TXD
TC0
A1
PWMA
PWMA[5]
ACIFB
ACBN[0]
TWIMS0
TWD
CAT
CSB[7]
10
PA06
6
VDDIO
High-
drive I/O,
5V
tolerant
SPI
SCK
USART2
TXD
USART1
CLK
TC0
B0
PWMA
PWMA[6]
EIC
EXTINT[2]
SCIF
GCLK[1]
CAT
CSB[1]
15
PA07
7
VDDIO
Normal
I/O (TWI)
SPI
NPCS[0]
USART2
RXD
TWIMS1
TWALM
TWIMS0
TWCK
PWMA
PWMA[7]
ACIFB
ACAN[0]
EIC
NMI
(EXTINT[0])
CAT
CSB[2]
3
PA08
8
VDDIO
High-
drive I/O
USART1
TXD
SPI
NPCS[2]
TC0
A2
ADCIFB
ADP[0]
PWMA
PWMA[8]
CAT
CSA[4]
2
PA09
9
VDDIO
High-
drive I/O
USART1
RXD
SPI
NPCS[3]
TC0
B2
ADCIFB
ADP[1]
PWMA
PWMA[9]
SCIF
GCLK[2]
EIC
EXTINT[1]
CAT
CSB[4]
46
PA10
10
VDDIO
Normal
I/O
TWIMS0
TWD
TC0
A0
PWMA
PWMA[10]
ACIFB
ACAP[1]
SCIF
GCLK[2]
CAT
CSA[5]
27
PA11
11
VDDIN
Normal
I/O
PWMA
PWMA[11]
47
PA12
12
VDDIO
Normal
I/O
USART2
CLK
TC0
CLK1
CAT
SMP
PWMA
PWMA[12]
ACIFB
ACAN[1]
SCIF
GCLK[3]
CAT
CSB[5]
26
PA13
13
VDDIN
Normal
I/O
GLOC
OUT[0]
GLOC
IN[7]
TC0
A0
SCIF
GCLK[2]
PWMA
PWMA[13]
CAT
SMP
EIC
EXTINT[2]
CAT
CSA[0]
36
PA14
14
VDDIO
Normal
I/O
ADCIFB
AD[0]
TC0
CLK2
USART2
RTS
CAT
SMP
PWMA
PWMA[14]
SCIF
GCLK[4]
CAT
CSA[6]
37
PA15
15
VDDIO
Normal
I/O
ADCIFB
AD[1]
TC0
CLK1
GLOC
IN[6]
PWMA
PWMA[15]
CAT
SYNC
EIC
EXTINT[3]
CAT
CSB[6]
38
PA16
16
VDDIO
Normal
I/O
ADCIFB
AD[2]
TC0
CLK0
GLOC
IN[5]
PWMA
PWMA[16]
ACIFB
ACREFN
EIC
EXTINT[4]
CAT
CSA[8]
39
PA17
17
VDDIO
Normal
I/O (TWI)
TC0
A1
USART2
CTS
TWIMS1
TWD
PWMA
PWMA[17]
CAT
SMP
CAT
DIS
CAT
CSB[8]
41
PA18
18
VDDIO
Normal
I/O
ADCIFB
AD[4]
TC0
B1
GLOC
IN[4]
PWMA
PWMA[18]
CAT
SYNC
EIC
EXTINT[5]
CAT
CSB[0]
40
PA19
19
VDDIO
Normal
I/O
ADCIFB
AD[5]
TC0
A2
TWIMS1
TWALM
PWMA
PWMA[19]
SCIF
GCLK_IN[0]
CAT
SYNC
CAT
CSA[10]
25
PA20
20
VDDIN
Normal
I/O
USART2
TXD
TC0
A1
GLOC
IN[3]
PWMA
PWMA[20]
SCIF
RC32OUT
CAT
CSA[12]
24
PA21
21
VDDIN
Normal
I/O (TWI,
5V
tolerant,
SMBus)
USART2
RXD
TWIMS0
TWD
TC0
B1
ADCIFB
TRIGGER
PWMA
PWMA[21]
PWMA
PWMAOD[21]
SCIF
GCLK[0]
CAT
SMP
9
PA22
22
VDDIO
Normal
I/O
USART0
CTS
USART2
CLK
TC0
B2
CAT
SMP
PWMA
PWMA[22]
ACIFB
ACBN[2]
CAT
CSB[10]
6
PB00
32
VDDIO
Normal
I/O
USART3
TXD
ADCIFB
ADP[0]
SPI
NPCS[0]
TC0
A1
PWMA
PWMA[23]
ACIFB
ACAP[2]
TC1
A0
CAT
CSA[9]
16
PB01
33
VDDIO
High-
drive I/O
USART3
RXD
ADCIFB
ADP[1]
SPI
SCK
TC0
B1
PWMA
PWMA[24]
TC1
A1
CAT
CSB[9]
7
PB02
34
VDDIO
Normal
I/O
USART3
RTS
USART3
CLK
SPI
MISO
TC0
A2
PWMA
PWMA[25]
ACIFB
ACAN[2]
SCIF
GCLK[1]
CAT
CSB[11]
Table 3-1.
GPIO Controller Function Multiplexing