On Thu, 27 Nov 2003 10:56:33 -0500, you wrote:

>I have been playing with Microchip's PICkit 1 and the 12F675 8-Pin PIC. =
 I have been using the internal RC oscillator, as it keeps the number of =
external parts down, which keeps the playtime with the PIC up.  I have =
downloaded and read the documentation on the device and am confused by =
trying to figure out what the clock cycle time is.
>
>What I think I know;
>
>-The documentation says that the minimum cycle time is 200nS which is a =
5MHz Clock
>    -a 20MHz crystal used an external oscillator, would be divided by 4,=
 in fact any external oscillator would be divided by 4
>-the internal RC oscillator runs at ~4MHz, within 1% accuracy when =
calibrated.
>    -the internal oscillator is not divided by 4, thus instruction cycle=
 time is 250nS
>
>Is this correct?=20
No, all oscillators are divided by 4. Internal 4MHz RC will give 1uS per =
instruction.

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