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

Esa,
  Make sure your 5V is REALLY 5V and not much higher (5.5V is the max the chip can take).

  Does the chip get really hot ONLY after you try to program it ?

  Are you using one of the SX protoboards ? Or just a regular breadboard ?

  Do you have /MCLR connected to a 10K to Vdd ?

  Do you have a cap between Vss and Vdd close to the SX ?

  In my experience, as all you need to program it is Vss to ground, Vdd to +5, MCLR to a 10K to Vdd, a bypass cap between Vss and Vdd, And OSC1 and OSC2 connected to the programmer.

  Does the chip say Scenix, Ubicom, or Parallax on it ?

Bean.

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