Hi, RVP I use a external 4Mhz oscillator, coupled with a pair of 15 pF condenser = to ground. And in software configuration : .... _HS_OSC ... try other condenser (read datasheet of PIC for oscillator configuration) http://ww1.microchip.com/downloads/en/DeviceDoc/40044D.pdf Artem r-vallad@unete.cl a =E9crit : > in software, i have this configuration (BoostC) > > #pragma DATA _CONFIG, _BOREN_OFF & _CP_OFF & _DATA_CP_OFF & _WDT_OFF & > _LVP_OFF & _MCLRE_OFF & _XT_OSC & _PWRTE_ON > > the circuis has a external 4MHz xtal oscillator, coupled with a pair of > 22nF condenser to ground. = = = = -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist