what is the bus frequency of te DEMOQE128

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what is the bus frequency of te DEMOQE128

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juanibarra
Contributor I

Hi!

 

I have a demoque board and i want to know the bus frecuency for a MCF51QE128. I tried to do a program for  turn on a led  with delays of fors 

but the time never coincide at 4mhz. that's all.

 

Thanks for your attention!

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318 次查看
ZhangJennie
NXP TechSupport
NXP TechSupport

normally bus frequency will be shown in hiwave debugger command window. If you modify the bus frequency in your code. please input “Flash” command in debugger command line. It will show new bus frequency in commandline window. For example, in my code I change internal bus clock as 22M. after loading the program in debugger, we can see attached screenshot.

Here, 21.8M is the new detected bus frequency.

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319 次查看
ZhangJennie
NXP TechSupport
NXP TechSupport

normally bus frequency will be shown in hiwave debugger command window. If you modify the bus frequency in your code. please input “Flash” command in debugger command line. It will show new bus frequency in commandline window. For example, in my code I change internal bus clock as 22M. after loading the program in debugger, we can see attached screenshot.

Here, 21.8M is the new detected bus frequency.

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