Microchip Technology SAM-IoT Wx v2 Hardware User's Manual page 17

The ATWINC1510 provides internal Flash memory and multiple peripheral interfaces, including UART and SPI. The
only external clock source needed for the ATWINC1510 is the built-in, high-speed crystal, or oscillator (26 MHz). The
ATWINC1510 is available in a QFN package or as a certified module.
The communication interface between the ATSAMD21G18A and ATWINC1510 Wi-Fi module is the SPI, together with
some enabled signals and interrupts. The rest of the connections are left unconnected.
Table 4-6. ATWINC1510 Connections
ATWINC1510 Pin
4 RESET_N PB10
9 GND -
10 SPI_CFG -
11 WAKE PA19
12 GND -
13 IRQN PA18
15 SPI_MOSI PA12
16 SPI_SSN PA14
17 SPI_MISO PA15
18 SPI_SCK PA13
20 VBAT -
22 CHIP_EN PB11
23 VDDIO -
28 GND -
29 PADDLE -
©
2022 Microchip Technology Inc.
and its subsidiaries
ATSAMD21G18A Pin
GPIO
Ground
Pulled-up to VCC_WINC
GPIO
Ground
EIC EXT INT 2
SERCOM 4 SPI MOSI
SERCOM 4 SPI CS
SERCOM 4 SPI MISO
SERCOM 4 SPI Clock
VCC_WINC (3.3V)
GPIO
VCC_WINC (3.3V)
Ground
Ground
User Guide
SAM-IoT Wx v2
Hardware User Guide
Function Shared Functionality
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DS70005506A-page 17