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PIC16C62B to 16F872, no clock CLKOUT?

I'm wondering if there is some well known issue with the 16F872 WRT using the RC oscillator mode. I was told that the 'F872 was a pin-compatible replacement for the 'C62B (ignoring the A/D). When the 'C62B is in the socket I get a nice clock out signal on pin 10, CLKOUT. Quickly swapping in the 'F872 I get a DC low-level and pin 9, CLKIN is a DC high-level. Anyone?

Thanks.

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Mark A. Odell
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"Mark A. Odell" wrote in news:Xns94E55A1E166D3CopyrightMarkOdell@130.133.1.4:

Nevermind, I neglected to disable low-voltage programming. I now have the expected clock waveforms.

Regards,

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Mark A. Odell

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