The ATWINC15x0B is offered in an exposed pad 40-pin QFN package. This package has an exposed paddle that must be connected to the system board ground. The QFN package pin assignment is shown in the following figure. The color shading is used to indicate the pin type as follows:
- Green – power
- Red – analog
- Blue – digital I/O
- Yellow – digital input
- Grey – unconnected or reserved
Figure 1. ATWINC15x0B Pin Assignment
