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Low Voltage Programming 16LF873?

 
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Low Voltage Programming 16LF873?
PostPosted: Thu Dec 09, 2004 1:47 pm     Reply with quote

Hi

Can someone please tell me if I can program the 16LF873
with a 3V power supply?
I am planning to do inline programming of the chip on the PCB.
and if yes, then please could you tell me what #FUSES to set?

Thank you
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Dec 09, 2004 5:54 pm     Reply with quote

What programmer are you using ?
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PostPosted: Thu Dec 09, 2004 11:53 pm     Reply with quote

Hi

I am not using any programmer at the moment.
I am trying to find out if its possible to program the Microchip via the USB port, using circuitry (to be developed) running off a 3 or 3.3V regulator?

The idea is to build the PCB and then to plug it into the PC via the USB port and then program the PIC16LF873. The PDB will be run off a 3 (or 3.3V) power supply.

So is this possible?

Thank you
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Fri Dec 10, 2004 1:14 am     Reply with quote

I think it could be done. The easiest way would be to use a
USB-to-RS232 converter chip, such as the FT232BM.
http://www.ftdichip.com/

Then program a RS232 bootloader into the PIC. This would
have to be done by some other method than by the USB/RS232
connection.

The PIC would appear to the PC as if it's connected to a COM port.
A RS232 bootloader could then download code to the PIC.
http://www.microchipc.com/PIC16bootload/

I haven't tried this, but it would probably work. There are
certainly other ways to do it.
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