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Which register selects the clock input to a STM32F303K8

Question asked by Randy Nelson on Feb 16, 2018
Latest reply on Feb 16, 2018 by Randy Nelson

The clock diagram in RM0316 for the 32F303K8 indicates a clock selection mux off the APBx prescalers. I've searched the registers and cannot find the register used to select one of 4 clock inputs. The 4 possible inputs are the LSE, HSI, SYSCLK, or the clock off the APBx prescaler. The outpu tis to the usuart.


Can someone point me to the register.