Timothy J. Weber tw@timothyweber.org wrote:


>So I just tried programming my remote control with ICSP, as we had been 
>discussing last week.  Recap: circuit includes an XBee, which requires 
>3V.  I didn't think ICSP had been working at 3V with the PICkit2, so I 
>was using the ZIF approach with a DIY Kit128.

>I'm now trying to switch from a PIC16F916 to an 886, since I just got 
>some and the 886 has 4 more IOC pins, which will save me a few parts 
>here.  The Kit128 doesn't appear to support the 886.  So, I try the 
>PICkit2, setting it to be powered by the target.

>And... no dice.  PICkit2 says "Warning: This device requires a minimum 
>VDD of 4.5 for Erase/Write operations."  I tried continuing anyway, but 
>sure enough, the verify fails.

>Any other ideas?  For now I'm pulling it and putting on a spare 
>breadboard for ICSP at PICkit-powered 5V, then moving it back.  (Will 
>move the ZIF socket over there if this keeps up!)
>-- 
>Timothy J. Weber
>http://timothyweber.org

According to the Microchip website only with enhanced flash it is possible to 
program at voltages below about 4.75 volt
http://support2.microchip.com/KBSearch/KB_StdProb.aspx?ID=SQ6UJ9A003C0O
both these devices have standard flash program memory there is only the option
of programming it around 5 volt or replacing it with a device with enhanced flash.

Peter van Hoof
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