zhangyimb zhangyimb

what is "spurious interrupt requests" mean?

Discussion created by zhangyimb zhangyimb on Jul 25, 2012
Latest reply on Aug 1, 2012 by kef

Hello! anybody

 

I am using Periodic Interrupt Timer with XET256 ,there is a NOTE in MC9S12XEP100 Reference Manual 17.4.2  

 

Be careful when resetting the PITE, PINTE or PITCE bits in case of pending
PIT interrupt requests, to avoid spurious interrupt requests.

 

what is mean? 

 If  there is a interrupt request pending ,then I clear PITIE,and PITCE, there is still have a interrupt request pending?

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