4.1 Power Domain Partitioning
SAM L21 peripherals are partitioned into five different power domains. The partitioning can be seen in Table 4-1 and Figure 4-1.
| PDBACKUP | PDTOP | PD0 | PD1 | PD2 |
|---|---|---|---|---|
| OSC32CTRL | EIC | AC | AES | CORE |
| PM | PORT | ADC | AHB-APB Bridges | DSU |
| RSTC | WDT | CCL | DAC | SRAM |
| RTC | EVSYS | DMAC | USB | |
| SUPC | GCLK | I2S | Flash | |
| MCLK | PAC | |||
| OPAMP | SERCOM | |||
| OSCCTRL | TC | |||
| PTC | TCC | |||
| LP TC | TRNG | |||
| LP SERCOM | LP SRAM |
