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PIC16F84 programing question.

codar

All new to me these micros.... giv mi' the inside of a telly or a transmitter any day.  I have a Pic3 and related Pic3 installation software... and Hex code etc. and  I'm  using a ZIF extender board to couple the Chip to the pic, with the shorting/linking pins configured as per instructions on the back.

I would sooner ask before 'blowing things'.  MCLR (pin4) with the shorting pin in situ places this pin onto the +ve line, all the info I come across shows a 10K resistor between +ve and pin 4...... do I leave the link out and insert a 10K or go ahead leaving pin 4 connected to the +ve line? The chip being powered via PIC3. Thought I'd try my hand with MCU's.

Thanks, Dave

  • Hi,

    The answer is in the PIC16F84 datasheet, section 8.4. It describes how you can use that pin in the text there (it refers to resistor and resistor-less options), plus there's an optional diagram there.

    In general, it's better to tie pins to a supply through a resistor if you think you may need to pull the pin to a different logic level easily, but another method is to have a shorting link.