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.

-- 
- Mark ->
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"Mark A. Odell" <odellmark@hotmail.com> wrote in
news:Xns94E55A1E166D3CopyrightMarkOdell@130.133.1.4: 

> 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. 

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

Regards,

-- 
- Mark ->
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