Paulo Proenca

IRQ timings

Discussion created by Paulo Proenca on Oct 26, 2006
Latest reply on Oct 27, 2006 by Paulo Proenca
Hi for all of you...
 
This is the first time I login to this forum, so forgive me some uncorrections that I will certainly make...
 
I've been working for some time in a project with an MC9S12XDP512 processor. I've been abble to put all the things working on it. AD, SPI, timers, interrupts and so on.
But, and we always have a but, I'm having some troubles with IRQ... Specially with the duration of the pulse on the IRQ pin.
 
If I send a small pulse to it, sooner or later I'll get a spurious interrupt. If a send a too longer pulse, I'll get it once again.
 
Does anyone knows where to find some information on timings for this processor?
 
Best regards
 
Paulo

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