From: jl@glen--canyon.com   
      
   On Wed, 26 Nov 2025 09:16:09 GMT, Jan Panteltje    
   wrote:   
      
   >>"Tom Del Rosso" wrote:   
   >>>john larkin wrote:   
   >>>   
   >>> Good on-chip oscillators would be cool, on uPs and FPGAs.   
   >>   
   >>I have an electric oven that seems to use the on-chip oscillatior. The   
   >>clock gains a few minutes a day. Thay could have omitted the clock and   
   >>no one would miss it.   
   >   
   >On chip oscillators are temperature dependent   
   >I use an on-chip oscillator in a Microchip PIC 18F14K22 as clock.   
   >I has GPS backup though, but you can set the oscillator free running to a few   
   seconds a day   
   >drift at room temperature.. witout GPS.   
      
   It's a silicon oscillator factory calibrated to 1%, but drifts a few   
   per cent over temperature.   
      
   Some silicon oscillators are specified for 2:1 frequency range.   
      
      
   John Larkin   
   Highland Tech Glen Canyon Design Center   
   Lunatic Fringe Electronics   
      
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