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Problem programmed 16f628a chip

 
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jjude



Joined: 12 Nov 2007
Posts: 37

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Problem programmed 16f628a chip
PostPosted: Mon Nov 12, 2007 12:57 am     Reply with quote
My programmer in this schematic
http://www.coolcircuit.com/project/picprog/schematic.jpg
and i run winPic800 and OshonSoft Parallel Port PIC Programmer.
I program 16f877a chip and this run good.
when i program 16f628a chip and read data, data is 3fff
VPP voltage is 13V.
How i can program this chip?
Code:

#fuses INTRC_IO,NOWDT, PUT, NOPROTECT, BROWNOUT, NOLVP, NOCPD
#use delay(clock=4000000)
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