topic Re: What is the Appropriate Configuration for K65 @120 MHz Operation using 32K External Oscillator in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/What-is-the-Appropriate-Configuration-for-K65-120-MHz-Operation/m-p/481297#M29442 <HTML><HEAD></HEAD><BODY><P>Hi&nbsp; john,</P><P>You can't configure K65 @120 MHz using 32K External Oscillator.</P><P>When using 32K external oscillator, the FLL is needed.</P><P>Calculation 120MHz = 2929 × fFLL_ref ,&nbsp; then the fFLL_ref need to be equal to 40969.6Hz.</P><P></P><P>Best Regards,</P><P>Robin</P></BODY></HTML> Mon, 11 Apr 2016 02:41:17 GMT Robin_Shen 2016-04-11T02:41:17Z What is the Appropriate Configuration for K65 @120 MHz Operation using 32K External Oscillator https://community.nxp.com/t5/Kinetis-Microcontrollers/What-is-the-Appropriate-Configuration-for-K65-120-MHz-Operation/m-p/481296#M29441 <HTML><HEAD></HEAD><BODY><P>What is the appropriate configuration to run the K65 at 120MHz without an external 16MHz oscillator? </P></BODY></HTML> Tue, 05 Apr 2016 02:51:44 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/What-is-the-Appropriate-Configuration-for-K65-120-MHz-Operation/m-p/481296#M29441 johngreene 2016-04-05T02:51:44Z Re: What is the Appropriate Configuration for K65 @120 MHz Operation using 32K External Oscillator https://community.nxp.com/t5/Kinetis-Microcontrollers/What-is-the-Appropriate-Configuration-for-K65-120-MHz-Operation/m-p/481297#M29442 <HTML><HEAD></HEAD><BODY><P>Hi&nbsp; john,</P><P>You can't configure K65 @120 MHz using 32K External Oscillator.</P><P>When using 32K external oscillator, the FLL is needed.</P><P>Calculation 120MHz = 2929 × fFLL_ref ,&nbsp; then the fFLL_ref need to be equal to 40969.6Hz.</P><P></P><P>Best Regards,</P><P>Robin</P></BODY></HTML> Mon, 11 Apr 2016 02:41:17 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/What-is-the-Appropriate-Configuration-for-K65-120-MHz-Operation/m-p/481297#M29442 Robin_Shen 2016-04-11T02:41:17Z