All MAC7100 Family members are composed of a 32-bit central processing unit (the ARM7TDMI-S™ core), up to 512 KB of embedded Flash EEPROM for program storage, up to 32 KB of embedded Flash for data and/or program storage, and up to 32 KB of RAM. The MAC7100 Family members are the first 32-bit MCUs from Freescale based on the ARM7™ core available to the automotive market. This family implements many features from the MPC5500 Family with which our automotive customers are already familiar.
The MAC7100 Family allows 3.3V to 5V operation compatibility for existing peripheral devices (sensors), commonly used in many body applications today and expected in future 3.3V applications.
http://www.freescale.com/mac7100