Interfacing with the Host Microcontroller

This section describes interfacing the ATWINC15x0B with the host microcontroller. The interface is comprised of a slave 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
11	IRQN
13	SPI_MOSI
16	SPI_SSN
17	SPI_MISO
18	SPI_CLK
23	CHIP_EN
34	RESETN