I have several 12f629s from different purchases. I just measured the CLKOUT signal and I'm getting between 1.15 and 1.25 MHz both with a simple freq. counter (DMM) and a decently calibrated scope. Vdd between 3 and 5V doesn't make too much difference in what I'm seeing.
I understand that Microchip INTOSC accuracy specs are optimistic, but up to 25% off is way more than I expected. Other than really lousy manufacturing tolerances, what else might be causing this? Thanks for any ideas or hints.