MC9S12[X][AAA][P][NNN][AAAA]
...|...|...|...|...|....+------ package, eg temperature, voltage, etc
...|...|...|...|...+----------- flash size in K in power of two, or in M *100
...|...+---|---|--------------- X=Contains XGATE mmu/dma
...+-------|---|--------------- CPU
...........|...+--------------- P=???
...........+------------------- NE ???
............................... A ???
............................... B ???
............................... C ???
............................... D ???
............................... E ???