10
32099DS–06/2010
AT32UC3L016/32/64
See
for a description of the various peripheral signals.
Signals are prioritized according to the function priority listed in
if multiple
functions are enabled simultaneously.
Refer to
”Electrical Characteristics” on page 41
for a description of the electrical properties of the
pad types used.
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]
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
TWI, 5V
tolerant,
SMBus,
Normal
I/O
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]
8
PB03
35
VDDIO
Normal
I/O
USART3-
CTS
USART3-
CLK
SPI-MOSI
TC0-B2
PWMA-
PWMA[26]
ACIFB-
ACBP[2]
TC1-A2
CAT-
CSA[11]
21
PB04
36
VDDIN
TWI, 5V
tolerant,
SMBus,
Normal
I/O
TC1-A0
USART1-
RTS
USART1-
CLK
TWIMS0-
TWALM
PWMA-
PWMA[27]
PWMA-
PWMAOD[27]
TWIMS1-
TWCK
CAT-
CSA[14]
20
PB05
37
VDDIN
TWI, 5V
tolerant,
SMBus,
Normal
I/O
TC1-B0
USART1-
CTS
USART1-
CLK
TWIMS0-
TWCK
PWMA-
PWMA[28]
PWMA-
PWMAOD[28]
SCIF-
GCLK[3]
CAT-
CSB[14]
30
PB06
38
VDDIO
Normal
I/O
TC1-A1
USART3-
TXD
ADCIFB-
AD[6]
GLOC-IN[2]
PWMA-
PWMA[29]
ACIFB-
ACAN[3]
NMI
CAT-
CSB[13]
31
PB07
39
VDDIO
Normal
I/O
TC1-B1
USART3-
RXD
ADCIFB-
AD[7]
GLOC-IN[1]
PWMA-
PWMA[30]
ACIFB-
ACAP[3]
EIC-
EXTINT[1]
CAT-
CSA[13]
32
PB08
40
VDDIO
Normal
I/O
TC1-A2
USART3-
RTS
ADCIFB-
AD[8]
GLOC-IN[0]
PWMA-
PWMA[31]
CAT-SYNC
EIC-
EXTINT[2]
CAT-
CSB[12]
29
PB09
41
VDDIO
Normal
I/O
TC1-B2
USART3-
CTS
USART3-
CLK
PWMA-
PWMA[32]
ACIFB-
ACBN[1]
EIC-
EXTINT[3]
CAT-
CSB[15]
23
PB10
42
VDDIN
Normal
I/O
TC1-CLK0
USART1-
TXD
USART3-
CLK
GLOC-
OUT[1]
PWMA-
PWMA[33]
EIC-
EXTINT[4]
CAT-
CSB[16]
44
PB11
43
VDDIO
Normal
I/O
TC1-CLK1
USART1-
RXD
ADCIFB-
TRIGGER
PWMA-
PWMA[34]
CAT-VDIVEN
EIC-
EXTINT[5]
CAT-
CSA[16]
5
PB12
44
VDDIO
Normal
I/O
TC1-CLK2
TWIMS1-
TWALM
CAT-SYNC
PWMA-
PWMA[35]
ACIFB-
ACBP[3]
SCIF-
GCLK[4]
CAT-
CSA[15]
Table 3-1.
GPIO Controller Function Multiplexing