topic Re: LPC43xx M4/M0 Clk speeds in LPC Microcontrollers

LPC43xx M4/M0 Clk speeds

lpcware — Wed, 15 Jun 2016 18:57:36 GMT

Content originally posted in LPCWare by scjames on Thu Mar 26 06:28:47 MST 2015
Is it possible to have both Arm cores running at different clock speed. Would seem logical, but can't find anything in docs other than using the independent WFI/WFE feature(s)

I have an application with requires M4 core running at high speed >180MHz for intermittant Ethernet/number intensive processing etc.
The M0 core for PWM/ low speed timing functions which could run of a 12MHz clock.

Want to keep the power consumption down.

Re: LPC43xx M4/M0 Clk speeds

lpcware — Wed, 15 Jun 2016 18:57:37 GMT

Content originally posted in LPCWare by scjames on Thu Mar 26 12:36:32 MST 2015
Previous old posting says LPC43xx cores have common clock source ... pity would have been useful feature to keep power consumption down!!!

Re: LPC43xx M4/M0 Clk speeds

lpcware — Wed, 15 Jun 2016 18:57:37 GMT

Content originally posted in LPCWare by starblue on Fri Mar 27 02:57:31 MST 2015
http://www.lpcware.com/content/forum/different-clocks-m4-and-m0

Re: LPC43xx M4/M0 Clk speeds

lpcware — Wed, 15 Jun 2016 18:57:38 GMT

Content originally posted in LPCWare by nerd herd on Fri Mar 27 07:47:52 MST 2015
Hi scjames,

What you heard is correct, you are not able to clock the two cores at independent clock speeds. Your voice is being heard though! The more we hear about this feature being wanted, the more we can bug the designers. ;)