Kinetis Microcontrollers中的主题 K10DN32VFM5 clocking option

K10DN32VFM5 clocking option

Dan1234 — Tue, 29 May 2012 18:34:30 GMT

Hello,

I am planning on using the K10DN32VFM part.

My question is when clocking with the 32 KHz IRC through the FLL, will it be possible to generate max Core/system clock speed (50 MHz)?

Are there any peripherals that require an external clock to operate or will they all work with only the clock generated using the 32 KHz IRC and the FLL?

I have been through the data sheets and believe that I can use the IRC but just making sure I am not missing anything obvious as this is my first attempt to use an ARM on a project and the amount of data I am having to read and understand just to chose a suitable part is quite a lot.

Thanks,

Daniel

Re: K10DN32VFM5 clocking option

PetrC — Fri, 01 Jun 2012 15:39:14 GMT

You will not be able to use RTC module with only IRC. It always requires external 32kHz crystal.

Petr

Re: K10DN32VFM5 clocking option

Dan1234 — Sun, 03 Jun 2012 21:06:30 GMT

Thanks I do not plan to use the real time clock (RTC) on the product so that will not be an issue.

The K10 can be clock at 50MHz using the slow IRC and the FLL as I have found in the reference manual, so at the moment I believe I should be able to use the K10 without an external clock for the proposed project.

Daniel