nicolas colombain

MCF547x Interrupt latency

Discussion created by nicolas colombain on Nov 8, 2006
Latest reply on Nov 13, 2006 by nicolas colombain
Hello,
 
In my current project, I need to relatively react quickly to an external interrupt.
After some measurements, I found that the processor needs more than 700ns after the interrupt edge to enter in the interrupt routine !!!
I have no operating system, the interrupt code/data are located in the core RAM and this interrupt has the highest priority level.
The system bus freq is 100MHz while the core frequency is 200MHz.
Any ideas ????
 
Nicolas
 

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