8 Input/Output Lines
The SAM E70/S70/V70/V71 features both general purpose I/Os (GPIO) and system I/Os. GPIOs can have alternate functionality due to multiplexing capabilities of the PIO controllers. The same PIO line can be used, whether in I/O mode or by the multiplexed peripherals. System I/Os include pins such as test pins, oscillators, erase or analog inputs.