The PC755 and PC745 PowerPC m icroprocessors are high-performance, lowpower, 32-bit implementations of the PowerPC Reduced Instruction Set Computer (RISC) architecture, especially enhanced for embedded applications. The PC755 and PC745 microprocessors differ only in that the PC755 features an enhanced, dedicated L2 cache interface with on-chip L2 tags. The PC755 is a drop-in replacement for the award winning PowerPC 750TM microprocessor and is footprint and user software code compatible with the MPC7400 microprocessor with AltiVecTM technology. The PC745 is a drop-in replacement for the PowerPC 740TM microprocessor and is also footprint and user software code compatible with the PowerPC 603eTM microprocessor. PC755/745 microprocessors provide on-chip debug support and are fully JTAG-compliant.