topic Re: FLL of KEA-128? in Kinetis Microcontrollers

FLL of KEA-128?

vigneshbalaji — Mon, 30 May 2016 21:10:47 GMT

Hi,

Is it that a clock Mode with FLL is the Most accurate and reliable clock mode ????

If so why ??? Please Provide an elaborate explanation?

Re: FLL of KEA-128?

kerryzhou — Tue, 31 May 2016 04:49:52 GMT

Hi Vignesh,

This is nearly the same question about the clock source.

About the clock accurate and reliable, it is determined by the clock source, if you use the inaccurate clock source, even you use the FLL, you can't get the accurate clock.

FLL locks the frequency to 1280 times the internal or external reference frequency. It can enlarge the clock source frequent.

Wish it helps you!

Have a great day,

Jingjing

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Re: FLL of KEA-128?

vigneshbalaji — Tue, 31 May 2016 05:11:16 GMT

Hi Jing,

Thank you. I had a small confusion here. now I got Clarity Regarding Core Clock.I just wanted to know which core Clock Mode is the most Stable, Reliable and accurate of All????

Re: FLL of KEA-128?

kerryzhou — Tue, 31 May 2016 06:13:10 GMT

Hi Vignesh,

Please read the FLL function:

Frequency-locked loop - Wikipedia, the free encyclopedia

The clock mode with FLL will more stable than other none FLL mode.

Wish it helps you!

Have a great day,

Jingjing

Re: FLL of KEA-128?

mohammedaboelna — Tue, 05 Dec 2017 12:18:15 GMT

Hello Kerry,

Regarding your reply;

FLL locks the frequency to 1280 times the internal or external reference frequency.

I just wonder what exact wait time should I wait for FLL to be locked on that (1280 * external reference clock).

Could you help please ?

Thank you in advance.

Sincerely;

Mohammed Aboelnasr.

Re: FLL of KEA-128?

kerryzhou — Wed, 06 Dec 2017 09:06:21 GMT

Hi Mohammed AboeInasr,

Please check this post:

KE/KEA POR Sequence and ICS Module Investigation

There has the FLL stable time.

Wish it helps you!

Have a great day,

Kerry