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

Good thought, but I don't *think* my relay circuitry is at fault.  I attached a (quickly drawn) shematic of my relay circuit.  It looks safe to me.  Pins 2 and 9 on the relay are either side of the relay inductor.

Would be interesting to note if the fact that the crack appears at that pin is coincidence...

One thing I will add though, the one time I saw this occur with my debug setup, it only occured when I had my BCD rotary switch set to the 0xF setting (all pins connected), and when I switched it to the 0x0 setting (no pins connected) the problem immediately went away.  By this I mean, the chip got stinking hot all of a sudden and switching to 0x0 (no pins connected) the chip cooled right down.  This makes me pretty confident that the problem lies with the switch circuit/pin configuration.

Thanks for the input!

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