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Hi.. I have a problem with the xc167ci. Its I/O-Pins toggle too slowly. If I have e.g. pin 4^0 toggeling, it only works with 2,85 MHz instead of 40 MHz (system clock). I use the following sourcecode: while(1) { P9_0 = 0; P9_0 = 1; } In EBC-Mode the pins are pretty fast, they work on a 25 ns basis. Why does that not work on normal I/O-Pin operations? Thanks, Erwin
Is rise/fall time ok? May be crystal/oscillator is running at a wrong harmonic?
I do not think so, for EBC-timings for example work fine. The time between execution of two instructions is 25 ns, I measured that. The Factor between the pin toggle frequency and the oscillator frequency is 14. Do I work in a strange MODE like debug mode? (Debug itself is disabled). What other modes exist?