The MPC859P/859T/859DSL PowerQUICC Family is a 0.18 micron version of the MPC860 PowerQUICC Family and can operate up to 133 MHz on the MPC8xx Core with a 66 MHz external bus. The MPC866 Family has a 1.8 V core and has a 3.3 V I/O operation with 5 V TTL compatibility. The MPC859P/859T/859DSL Integrated Communications Controller Family is a versatile one-chip integrated microprocessor and peripheral combination that can be used in a variety of controller applications. It particularly excels in both communications and networking systems.