SAM4S Series [DATASHEET]
9 Jun 2015 ... The Atmel® | SMART SAM4S series is a member of a family of Flash
microcontrollers based on the high-performance 32-bit ARM® Cortex®-M4 RISC
..... TD. RD. RK. RF. SSC. PDC. USB 2.0. Full-speed. TF. D[7:0]. A[23:0].