Daniel Bixby

Switching modes, 9S12C32

Discussion created by Daniel Bixby on Mar 6, 2007
Latest reply on Mar 7, 2007 by Steve Mcaslan
I took my first microprocessing class last semester and used the M68DKIT912C32 development board for the 9S12C32 (48-pin LQFP). We programmed it in assembly. On the kit board a single switch controls whether the micro is in "load" or "run" mode. From taking measurements it looks like all this switch does is tie pin 48 (PP5/KWP5/PW5) to and from ground. I didn't see this mentioned in the datasheet, although the other required external circuitry is explained fairly well. Is this all that is needed for the 80-pin version to go between "load" and "run"? Any information would be greatly appreciated.