In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Miner_with_a_PIC wrote:

I finally installed my first sx52 on a custom board. Unfortunately it is failing to program. I have checked checked and rechecked all connections and wiring. Especially care has been taken to connect the osc1, osc2 and rails appropriately to the SX-KEY; the MCLR is being pulled high with a 10K + I have tried holding reset upon power up and/or depressing following power-up. There has been no error that I can find so far. The SXkey initially seemed to be programming the chip, with the write progress bar reaching completion. But the very simple flash an led program did not work, I was able to reprogram another couple of times and now nothing! The SX-KEY is okay as I have retested it on an SX28. Does anyone have any ideas? I oriented the chip according to the indented mark rather than the text orientation. Has there been any know orientation issues with these parts? Please let me know if you have any ideas.

JT

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