Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller TLLGA 48 (5.5x5.5) 32-Bit 50 MHz I/O number 36

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32142D–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-

pin

64-

pin

Pin

Name

G

PI

O Supply

Pad

Type

GPIO Function

ABCDE 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 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 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]