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18f4550 tqfp dedicated icsp pins connection problems
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doguhanpala



Joined: 05 Oct 2016
Posts: 120

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PostPosted: Thu May 04, 2017 2:20 am     Reply with quote
Ttelmah wrote:
The recommendation in the PicKit2 manual uses 10KR.

Once you program the ICSP2 fuse, the secondary port should work. There was mention in the MicroChip site of problems once this is done, unless the ICRST pin is also pulled gently high (10KR again). Problem is that during boot, the MCLR pin is not at Vihh, and so the level on ICRST can sometimes matter....


Thank you so much Ttelmah! I will try it with a resistor and try to solder a cable to ICRST pin so i can use that port.
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