What is PLL setting in option byte?

[alanlai1]

Posted on October 28, 2003 at 07:30

What is PLL setting in option byte?

[alanlai1]

Posted on October 23, 2003 at 23:48

What is PLL setting in option byte? (also PLLx4, PLLx

Is it need to be define while programming?

[anshul]

Posted on October 24, 2003 at 11:29

PLL is used for generating 4Mhz and 8Mhz frequency. It is enabled using the option byte.

e.g. You can select the Internal RC as the source of clock for your application and then enable the x8 PLL option to generate ~8MHz internal clock.

[ This message was edited by: Ansh on 24-10-2003 15:00 ]

[alanlai1]

Posted on October 26, 2003 at 23:24

is it mean that PLL should always be enable

(just choice x4 / x8 only) ?

when it it diasble?

is it the PLL called ''phase lock loop'' ?

[anshul]

Posted on October 27, 2003 at 11:53

Yes, the PLL is ''phase lock loop''.

No, the PLL should not always be enabled. It needs to be enabled only when you want your Internal clock to be multiplied by 4 or 8.

You should enable the PLL by selecting PLL enabled in the option byte and you should select whichever option you require x4 and x8.

[alanlai1]

Posted on October 28, 2003 at 07:27

Thank you very much!!!!!!!!!!

[alanlai1]

Posted on October 28, 2003 at 07:30

Thank you very much!!!!!!!!!!