SERIES=0, FAMILY=0
Device Identification
| DEVSEL | Device Select |
| REVISION | Revision Number |
| DIE | Die Number |
| SERIES | Series 0 (0): Cortex-M0+ processor, basic feature set 1 (1): Cortex-M0+ processor, USB |
| FAMILY | Family 0 (0): General purpose microcontroller 1 (1): PicoPower |
| PROCESSOR | Processor 1 (CM0P): Cortex-M0+ 2 (CM23): Cortex-M23 3 (CM3): Cortex-M3 5 (CM4): Cortex-M4 6 (CM4F): Cortex-M4 with FPU 7 (CM33): Cortex-M33 |