michael brown wrote : > I've recently started using the internal oscillator to run my 16F88... > While overall the INTOSC stays within it's 1% spec, in the short > run the frequency (2MHz CLKOUT) varies by several kHz continuously. Hi. +/- 1% out of 2 Mhz is +/- 20 KHz, right ? Isn't "several kHz" well withing the +/- 20 KHz limits ? I have never seen any specs about the stability over *time*, only over *temp* (and voltage maybe ?)... Now, if this is "normal", I have no idea, but is't clearly withing the specs in the data sheet, not ? Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist