Posted on February 18, 2005 at 04:20I think your ADDRSELx and BUSCONx are correct. The most possible reason is your hardware or chip itself. Also a problem you should notice is Port4. Please refer to the note of Table 7-4 in C167CR User's Manual v3....

Posted on January 22, 2005 at 00:05In my timer interrupt, I update DAC through ext. bus. I want to ensure that DAC update interval is precisely identical, but interrupt latence is affected by many factors. How to make the interrupt latence is identi...