Benedek Dingleberg

Instruction cycle counts in HC08, HC05, HC11 chips

Discussion created by Benedek Dingleberg on Jun 17, 2009
Latest reply on Jun 18, 2009 by bigmac

The documents for HC08, HC05, and HC11 all seem to indicate that a conditional jump instruction takes a fixed number of cycles regardless of whether the jump is taken or not.  Has anyone confirmed this behavior?  I've seen documents from other companies neglect to mention this, and I need to know for sure the timings of Motorola's 8-bit cores.


Please don't respond with guesses, educated or otherwise, as that only furthers the problem.  I'd like to hear from people who know from experience.


Help in this matter will be much appreciated.