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.

Table 4-1. Power Domain Partitioning
PDBACKUPPDTOPPD0PD1PD2
OSC32CTRLEICACAESCORE
PMPORTADCAHB-APB BridgesDSU
RSTCWDTCCLDACSRAM
RTCEVSYSDMACUSB
SUPCGCLKI2SFlash
MCLKPAC
OPAMPSERCOM
OSCCTRLTC
PTCTCC
LP TCTRNG
LP SERCOMLP SRAM
Figure 4-1. Power Domain Partitioning