It is the micro controller in Motorola CDM series mobile radios and portables. We have a problem with some of these radios locking up on power up. On the test bench checking the circuit board all systems come on but the microprocessor stops all port outputs. If you hard reset the chip using the reset pin the radio will come to life. (Hard to do that in the vehicle). We were looking for info on freescale website but could not find any. The Radio schematics do not show all of the processor's pins. Though that you might have it by chance. Motorola high tech no help.