STM32F303K8 Nucleo only runs at 8 MHz

[troyerta]

Posted on March 28, 2016 at 16:51

Hey all,

I'm using the standard peripheral library 1.2.3 for the F3 series on a Win7 machine running the Keil IDE. So while loading the template project, I find that the Sys-clock is only at 8 MHz.Using the Clock Configuration tool in CubeMX shows me that I can increase the PLLMul to 16 in order to get a 64 MHz clock.But since this nucleo is advertised as having a 72 MHz part on it, there must be a way to get it to 72 MHz using only HSI + PLL, right? There is no option on the Nucleo 32 board for adding an HSE XTAL.I'm used to the F4, which has a more flexible clock tree, but here I find there is less opportunity for clock multiplication.Am I stuck at 64 Mhz? Or is there another way?

[Tesla DeLorean]

Posted on March 28, 2016 at 17:21

Honestly not waded through the F0 specs deeply, not a part I'm using. Will observe that the original F1 series would only work at 64 MHz via the HSI/2, for 72 MHz there you needed a symmetrical 8 MHz external source.