Interfacing with the Host Microcontroller

This section describes interfacing the ATWINC15x0-MR210xB module with the host microcontroller. The interface is comprised of a Client SPI and additional control signals, as shown in the following figure. For more information on SPI interface specification and timing, refer to the SPI Interface. Additional control signals are connected to the GPIO/IRQ interface of the microcontroller.

Figure 1. Interfacing with the Host Microcontroller

Table 1. Host Microcontroller Interface Pins
Pin Number	Function
4	RESET_N
13	IRQ_N
22	CHIP_EN
16	SPI_SSN
15	SPI_MOSI
17	SPI_MISO
18	SPI_SCK