AnsweredAssumed Answered

What's the clock frequency of MPC5668G when debugging?

Question asked by gang han on Apr 11, 2012
Latest reply on Apr 12, 2012 by TomE

Platform: MPC5668GKITJ evaluation board

IDE: CodeWarrior MCU 10.2

Debugger: USB Multilink Interface

 

In debug mode, I downloaded the code into MPC5668G e200z6 and run it.  But the execution time of 1760 instructions is 250us. The manual says the frequency is static to 116MHz. Then, the average CPI (cycles per instruction) is more than 16! It can't be true!

 

So, what's the system clock of MPC5668G in debug mode? Is it clocked by the debugger?

 

Thanks in advance,

Gang

Outcomes