Funny NYPD wrote:
> Not just you.
> Even Microchip development team can not figure out how to use the
> PIC18F2550 POR and BOR properly for their PICKit 2 design. So those two
> features were simply turned off to save a headache.

Both are turned on in my USBProg and it works great.  I just checked, and
brownout reset is set to 4.5V and the powerup timer is enabled.  Unlike the
PICKit 2 however, I didn't cut corners by using the USB power directly.  The
USBProg includes a boost switcher with a linear post regulator that
guarantees a nice clean 5.0V to the PIC.  Of course there are also bypass
caps in the right places with the high frequency loop currents thought
about.  The USBProg and USBProg2 use a 18F2550, just like the PICKit 2.  The
schematics and source code are all open and accessible from
http://www.embedinc.com/products/usbprog.


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(978) 742-9014.  Gold level PIC consultants since 2000.
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