When Freescale has made a new MCU, but it has not been tested yet, it is called PCxxx.
The PC parts are not for sale, and are given away to important customers, who must have them to shorten the developement time.
The MC prefix means that this is a fully-qualified part. There are datasheets and realibility figures available. They are fully qualified.
In the old days, the first Motorola MCU was the MC6800. It was furhter developed into the MC6801, -2, -5.
Some of the MC680x had an EPROM on board. They were called the MC687xxx devices.
After some additional years, the processing was changed, and the new parts were called the MC68HCxx devices. A typical EPROM part was the MC68HC705C8.
Later a brand new family was launched. It was called the HC908 family, where the "9" said that a Flash EPROM was used and the family was the "08".
A typical part was the MC68HC908JL3.
Recently a new "08" family was launced. But as the ICs were getting smaller and smaller, the name had to be changed to MC9Sxxx, so it would fit on the package. The "9" is a Flash EPROM part, and the "S" declares the family name.
There are some MCUs that are available in special versions, eg the MC68HRC908JL3, which runs with a simple R-C oscillator.
The devices that you mention, I have not heard of. The closest is the MC9S08AW60 or the PC9S08AW60.
If you bought the 9S08AW60, you would get the MC type.
If you got the PC type, you should get a few pieces, and you should get them free.
Regards,
Ake