| Offset | Name | Bit Pos. | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|
| 0x00 | CTRLA | 7:0 | CKSEL | |||||||
| 0x01 | INTENCLR | 7:0 | CKRDY | |||||||
| 0x02 | INTENSET | 7:0 | CKRDY | |||||||
| 0x03 | INTFLAG | 7:0 | CKRDY | |||||||
| 0x04 | CPUDIV | 7:0 | CPUDIV[7:0] | |||||||
0x05 ... 0x0F |
Reserved | |||||||||
| 0x10 | AHBMASK | 7:0 | NVMCTRL | PAC | Reserved | DSU | DMAC | APBC | APBB | APBA |
| 15:8 | TRAM | Reserved | Reserved | Reserved | Reserved | |||||
| 23:16 | ||||||||||
| 31:24 | ||||||||||
| 0x14 | APBAMASK | 7:0 | GCLK | SUPC | OSC32KCTRL | OSCCTRL | RSTC | MCLK | PM | PAC |
| 15:8 | Reserved | AC | PORT | FREQM | EIC | RTC | WDT | |||
| 23:16 | ||||||||||
| 31:24 | ||||||||||
| 0x18 | APBBMASK | 7:0 | HMATRIXHS | NVMCTRL | DSU | IDAU | ||||
| 15:8 | ||||||||||
| 23:16 | ||||||||||
| 31:24 | ||||||||||
| 0x1C | APBCMASK | 7:0 | ADC | TC2 | TC1 | TC0 | SERCOM2 | SERCOM1 | SERCOM0 | EVSYS |
| 15:8 | OPAMP | CCL | TRNG | PTC | DAC | |||||
| 23:16 | ||||||||||
| 31:24 | ||||||||||