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Clock frequency.

Topic last updated 23 Apr 2010, by Paul Griffith. 3 replies
Shareef Jalloq
02 Jul 2009

Hi there,

can you tell me what the default clock configuration is please.  What is the input clock frequency on PLLCLKIN?

Thanks, Shareef.

Chris Styles
03 Jul 2009

Hi Shareef,

The clocking is :

12MHz in from the Oscillator

480MHz out of the multiplier

60MHz out of the PLL to the core

15MHz for the APB bus

Cheers,
Chris

Cristian Rheinheimer
23 Apr 2010 . Edited: 23 Apr 2010

is there any API command to change the cpu clock to 100Mhz in the LPC1768?

Paul Griffith
23 Apr 2010

Hi Shareef,

The CPU clock frequency in the LPC1768 mbed should be 96MHz.

Take a look at this forum thread: http://mbed.org/forum/mbed/topic/229/

Regards,

Paul