Lpc2000

--- In lpc2000@yahoogroups.com, "arkeryd" <arkeryd@y...> wrote:
> Hello to you all, doing my first post here...
> 
> The Philips LPC 21xx user manual carefully explains about pclk <->
> cclk relation and vpb divider, but doesn't say whether there is any
> upper limit on pclk...
> 
> Does anyone know if pclk can safely run at same speed as cclk (vpb
> divider=1), even if cclk is set at max, that is 60mhz on the LPC 
2119
> version I am using?
> 
> Kind Regards

Hello arkeryd@…

There is no upper limit for the pclk frequency in the currently 
available LPC2000 microcontrollers. Regardless of the cclk value, 
you can safely have your pclk = cclk (VPBDIV = 0x01) and have 
pclk=60MHz. The reason why the pclk = cclk/4 at reset is to reduce 
an overall power consumption of the device.

Regards,

Philips Apps Team