The MPC5553 microcontroller (MCU) is a member of the MPC5500 family of microcontrollers built on the Power ArchitectureTM embedded technology. This family of parts contains many new features coupled with high performance CMOS technology to provide substantial reduction of cost per feature and significant performance improvement over the MPC500 family. The host processor core of this device complies with the Power Architecture embedded category that is 100% user-mode compatible (with floating point library) with the original Power PCTM user instruction set architecture (UISA). The embedded architecture has enhancements that improve the performance in embedded applications. This core also has additional instructions, including digital signal processing (DSP) instructions, beyond the original Power PC instruction set. This family of parts