I've used the serial programmer for some time and now have the usb programmer. The old GUI had "internal oscillator". The new one has two choices for internal: 'INTOSC clockout' and 'INTOSCIO'. I can't find the description of these. Simply want to use the internal oscillator on a 16F672. Thanks, Keith
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Hi Keith,
I don't think Microchip makes a 16F672.
Maybe you meant the 16F627.
At any rate, the difference between the two options relates to the OSC2 pin.
'INTOSC clockout' would put out FOSC/4 on the OSC2 pin continuously.
A 4Mhz internal OSC will produce a 1Mhz output on OSC2.
Plain 'INTOSC' allows both the OSC1 and OSC2 pins to be used as general I/O.PBP3 Manual : Microchip Datasheets - 10F, 12F, 16F, 18F
Never download a PIC datasheet from anywhere but microchip.com
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The place to look is in the 627's datasheet section 14-11 CONFIGURATION WORD.
For the oscillator selection (bit4, 1-0) you'll see this ...
Then a little further down (14.2.7) it says what CLKOUT means.
HTH,PBP3 Manual : Microchip Datasheets - 10F, 12F, 16F, 18F
Never download a PIC datasheet from anywhere but microchip.com
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