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ATSAMD20G15A-MUT Datasheet(PDF) 11 Page - ATMEL Corporation |
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ATSAMD20G15A-MUT Datasheet(HTML) 11 Page - ATMEL Corporation |
11 / 25 page 11 Atmel SAM D20 [DATASHEET Summary] 42129JS–SAM–12/2013 5. I/O Multiplexing and Considerations 5.1 Multiplexed Signals Each pin is by default controlled by the PORT as a general purpose I/O and alternatively it can be assigned to one of the peripheral functions A, B, C, D, E, F, G or H. To enable a peripheral function on a pin, the Peripheral Multiplexer Enable bit in the Pin Configuration register corresponding to that pin (PINCFGn.PMUXEN, n = 0-31) in the PORT must be written to one. The selection of peripheral function A to H is done by writing to the Peripheral Multiplexing Odd and Even bits in the Peripheral Multiplexing register (PMUXn.PMUXE/O) in the PORT. Refer to !!!CRs_PORT_Top!!! for details on how to configure the I/O multiplexing. Table 5-1 describes the peripheral signals multiplexed to the PORT I/O pins. Table 5-1. PORT Function Multiplexing Pin I/O Pin Supply Pin Type A B(1) C D E F G H SAM D20E SAM D20G SAM D20J EIC REF ADC AC PTC DAC SERCOM (2) TC (3) AC/GCLK 1 1 1 PA00 VDDANA EXTINT[0] SERCOM1/ PAD[0] TC2/ WO[0] 2 2 2 PA01 VDDANA EXTINT[1] SERCOM1/ PAD[1] TC2/ WO[1] 3 3 3 PA02 VDDANA EXTINT[2] AIN[0] Y[0] VOUT 4 4 4 PA03 VDDANA EXTINT[3] ADC/VREFA DAC/VREFA AIN[1] Y[1] 5 PB04 VDDANA EXTINT[4] AIN[12] Y[10] 6 PB05 VDDANA EXTINT[5] AIN[13] Y[11] 9 PB06 VDDANA EXTINT[6] AIN[14] Y[12] 10 PB07 VDDANA EXTINT[7] AIN[15] Y[13] 7 11 PB08 VDDANA EXTINT[8] AIN[2] Y[14] SERCOM4/ PAD[0] TC4/ WO[0] 8 12 PB09 VDDANA EXTINT[9] AIN[3] Y[15] SERCOM4/ PAD[1] TC4/ WO[1] 5 9 13 PA04 VDDANA EXTINT[4] ADC/ VREFB AIN[4] AIN[0] Y[2] SERCOM0/ PAD[0] TC0/ WO[0] 6 10 14 PA05 VDDANA EXTINT[5] AIN[5] AIN[1] Y[3] SERCOM0/ PAD[1] TC0/ WO[1] 7 11 15 PA06 VDDANA EXTINT[6] AIN[6] AIN[2] Y[4] SERCOM0/ PAD[2] TC1/ WO[0] 8 12 16 PA07 VDDANA EXTINT[7] AIN[7] AIN[3] Y[5] SERCOM0/ PAD[3] TC1/ WO[1] 11 13 17 PA08 VDDIO I2C NMI AIN[16] X[0] SERCOM0/ PAD[0] SERCOM2/ PAD[0] TC0/ WO[0] 12 14 18 PA09 VDDIO I 2C EXTINT[9] AIN[17] X[1] SERCOM0/ PAD[1] SERCOM2/ PAD[1] TC0/ WO[1] 13 15 19 PA10 VDDIO EXTINT[10] AIN[18] X[2] SERCOM0/ PAD[2] SERCOM2/ PAD[2] TC1/ WO[0] GCLK_O[4] 14 16 20 PA11 VDDIO EXTINT[11] AIN[19] X[3] SERCOM0/ PAD[3] SERCOM2/ PAD[3] TC1/ WO[1] GCLK_IO[5] 19 23 PB10 VDDIO EXTINT[10] SERCOM4/ PAD[2] TC5/ WO[0] GCLK_IO[4] 20 24 PB11 VDDIO EXTINT[11] SERCOM4/ PAD[3] TC5/ WO[1] GCLK_IO[5] 25 PB12 VDDIO I2C EXTINT[12] X[12] SERCOM4/ PAD[0] TC4/ WO[0] GCLK_IO[6] 26 PB13 VDDIO I 2C EXTINT[13] X[13] SERCOM4/ PAD[1] TC4/ WO[1] GCLK_IO[7] 27 PB14 VDDIO EXTINT[14] X[14] SERCOM4/ PAD[2] TC5/ WO[0] GCLK_IO[0] |
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