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erasing pic's

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timothyjackson

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hello all.

On clicking the "erase all" button within MPLAB for a 16f628, I'm suprised to see that the "Device is NOT blank: Data Memory" keeps coming up. I keep erasing the chip (through a PICSTART PLUS programmer) and reading the chip, and doing a blank all check, and, the smae message comes up.....its only recently started coming up (only blown the chip 10 times or so).

Can anybody shed some light on this.
 
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