9
32099DS–06/2010
AT32UC3L016/32/64
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
Q
F
P
48
PIN
G
PI
O
Supply
Pad
Type
GPIO Function
A
B
C
D
E
F
G
H
11
PA00
0
VDDIO
Normal
I/O
USART0-
TXD
USART1-
RTS
SPI-
NPCS[2]
PWMA-
PWMA[0]
SCIF-
GCLK[0]
CAT-CSA[2]
14
PA01
1
VDDIO
Normal
I/O
USART0-
RXD
USART1-
CTS
SPI-
NPCS[3]
USART1-
CLK
PWMA-
PWMA[1]
ACIFB-
ACAP[0]
TWIMS0-
TWALM
CAT-CSA[1]
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
TWI,
Normal
I/O
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]
SCIF-
GCLK[1]
CAT-CSB[1]
15
PA07
7
VDDIO
TWI,
Normal
I/O
SPI-
NPCS[0]
USART2-
RXD
TWIMS1-
TWALM
TWIMS0-
TWCK
PWMA-
PWMA[7]
ACIFB-
ACAN[0]
NMI
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
ADCIFB-
PRND
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
TWI,
Normal
I/O
TC0-A1
USART2-
CTS
TWIMS1-
TWD
PWMA-
PWMA[17]
CAT-SMP
CAT-DIS
CAT-CSB[8]