Posted on April 17, 2013 at 12:12Section 2.6.8 of RM0038 states:''fPCLK1 must be a multiple of 10MHz to reach the 400kHz maximum I2C fast clock mode''how can I calculate the maximum I2C frequency I can achieve using a 4.2MHz fPCLK1this information d...

Posted on April 16, 2013 at 15:16I can't find the relevant documents they don't seem to be listed with the  product #lmgtfy:-stm32-resources

Posted on March 26, 2013 at 17:15The Reference Manual states ''The internal PLL can be clocked by the HSI RC or HSE crystal.''Is it possible to clock the PLL by feeding an external reference into OSC_IN?If there is no signal present at OSC_IN will t...