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problem ICD-U64 with PIC16F1827

 
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durruty67



Joined: 24 Jun 2010
Posts: 3

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problem ICD-U64 with PIC16F1827
PostPosted: Thu Jun 24, 2010 3:37 pm     Reply with quote
Hello,
I'm having problems trying to program the PIC16F1827 with the ICD-U64 programmer.
The CCSLOAD's diagnostics reads the chip ID just fine. The target test passes.
The Data, Clk, and Vcc are OK
The Vpp line rests in 8V but has a quick transient from about 12V to 8V at the beginning.
I just tried a voltage limiter for the Vpp, using the LM431, it stays in 8.11V, but no success programming
I tried using the board power supply and the ICD power supply (5V), same result, I keep getting the verify error, fuses and memory are not written.

I have a 47K pullup resistor in Vpp(mclr) connected on the target board.
All lines are dedicated for programming, no alternate function.
Anyone have ANY suggestion?
What is wrong with this setup?

Thank you,
John
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