WINC1500 SoC Overview
The ATWINC15x0 is based on an integrated, low-power 32-bit SoC. The following image depicts the key internal functional blocks:
In addition to its built-in Wi-Fi® IEEE-802.11 physical layer and RF front end, the WINC ASIC contains an embedded APS3S-Cortus 32-bit CPU to run the WINC firmware. The firmware comprises the Wi-Fi IEEE-802.11 MAC layer and embedded protocol stacks which offload the host MCU.
For detailed descriptions of the components of the SoC, see "Section 2" of the "Wi-Fi Network Controller Software Design Guide".