The MPC5121e/MPC5123 integrates a high performance e300 CPU core based on the Power Architecture Technology with a rich set of peripheral functions focused on communications and systems integration. Major features of the MPC5121e/MPC5123 are: e300 Power Architecture processor core (enhanced version of the MPC603e core), operates up to 400 MHz Power modes include doze, nap, sleep, deep sleep, and hibernate