4.1 Pin Description

1

GND

N/A

Common ground

2

UART_TxD

ATWINC1500 output

Currently used only for Microchip debug. Not for customer use. Leave unconnected.

Yes – pull-up

3

UART_RxD

ATWINC1500 input

Currently used only for Microchip debug. Not for customer use. Leave unconnected.

Yes – pull-up

4

Wi-Fi Chip_En

ATWINC1500 input

Currently used only for Microchip debug. Not for customer use. Leave unconnected.

No

5

Wi-Fi GPIO_1/RTC

ATWINC1500 I/O

ATWINC1500 General purpose I/O.

Can also be used to input a 32.768 KHz Real Time Clock for accurate timing of Wi-Fi sleep intervals

Yes – pull-up

6

Wi-Fi GPIO_3

ATWINC1500 General purpose I/O

Yes – pull-up

7

VBAT

Power

Supply for Wi-Fi RF Power Amplifier and Internal 1.3V Switching Regulator

8

PA16

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

9

PA17

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

10

GND

Power

Ground

11

PA18

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

12

PA19

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

13

PA20

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

14

PA21

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

15

PA22

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

16

PA23

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

17

GND

Power

Ground

18

PA24/USB_DM

See SAM D21 Family Data Sheet

Host Interface USB Data minus pin

Yes

19

PA25/USB_DP

See SAM D21 Family Data Sheet

Host Interface USB Data Plus pin

Yes

20

GND

Power

Ground

21

VCC

Power

Power supply for I/O

22

PB22

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

23

PB23

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

24

RESET_N

Input

See SAM D21 Family Data Sheet

System Reset. Low level on this pin resets the entire module.

Yes

25

PA30/SWCLK

See SAM D21 Family Data Sheet

Cortex Serial Wire Debug Interface

CLK

Yes

26

PA31/SWDIO

See SAM D21 Family Data Sheet

Yes

27

PB02

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

28

PB03

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

29

PA00/GPIO/XIN32

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

30

PA01/GPIO/XOUT32

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

31

PA02

I/O

See SAM D21 Family Data Sheet

Yes

32

GND

Power

Ground

Yes

33

PA03

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

34

PA04

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

35

PA05

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

36

PA06

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

37

PA07

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

38

PA08

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

39

PA09

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

40

PA10

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

41

PA11

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

42

GND

Power

Ground

43

PB10

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

44

PB11

See SAM D21 Family Data Sheet

See SAM D21 Family Data Sheet

Yes

45

Wi-Fi GPIO_4

ATWINC1500 I/O

ATWINC1500 General purpose I/O

Yes – pull-up

46

Wi-Fi GPIO_5

ATWINC1500 I/O

ATWINC1500 General purpose I/O

Yes – pull-up

47

Wi-Fi GPIO_6

ATWINC1500 I/O

ATWINC1500 General purpose I/O

Yes – pull-up

48

Wi-Fi I2C_SCL

ATWINC1500 I/O

Currently used only for Microchip debug. Not for customer use. Leave unconnected.

Yes – pull-up

49

Wi-Fi I2C_SDA

ATWINC1500 I/O

Yes – pull-up

50

Wi-Fi Reset_n

ATWINC1500 Input

Currently used only for Microchip debug. Not for customer use. Leave unconnected.

No

51

GND

Power

Ground