20.4.2.4 Clock Domains

The device has these synchronous clock domains:

High-Speed synchronous clock domain (HS Clock Domain). Frequency is f_HS.
CPU synchronous clock domain (CPU Clock Domain). Frequency is f_CPU.
Low Power synchronous clock domain (LP Clock Domain). Frequency is f_LP.
Backup synchronous clock domain. (BUP Clock Domain). Frequency is f_BUP.

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