ATUC256L3U_14 datasheet(10/45 Pages) ATMEL

Part #	ATUC256L3U

Description	High-performance, Low-power 32-bit Atmel

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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10 / 45 page

10

32142DS–06/2013

ATUC64/128/256L3/4U

Peripheral Multiplexing on I/O lines

3.1.1

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

48-

64-

Name

G

PI

O

Supply

Pad

Type

GPIO Function

ABCD

E

F

GH

11

15

PA00

0

VDDIO

Normal

I/O

USART0-

TXD

USART1-

RTS

SPI-

NPCS[2]

PWMA-

PWMA[0]

SCIF-

GCLK[0]

CAT-

CSA[2]

14

18

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

17

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

6

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

38

PA04

4

VDDIO

Normal

I/O

SPI-MISO

TWIMS0-

TWCK

USART1-

RXD

TC0-B1

PWMA-

PWMA[4]

ACIFB-

ACBP[1]

CAT-

CSA[7]

12

16

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

14

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]

19

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

62

PA10

10

VDDIO

Normal

I/O

TWIMS0-

TWD

TC0-A0

PWMA-

PWMA[10]

ACIFB-

ACAP[1]

SCIF-

GCLK[2]

CAT-

CSA[5]

27

35

PA11

11

VDDIN

Normal

I/O

PWMA-

PWMA[11]

47

63

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

34

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

48

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

49

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

50

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]

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