MPC745BPX300LE

Overview

The MPC745BPX300LE is a RISC microprocessor implementing the PowerPC instruction set architecture. It features a processor core with an internal L2 tag and dedicated L2 cache interface, alongside a 60x bus. The device operates at a maximum core frequency of 300 MHz with a SYSCLK range of 25 to 100 MHz. Core supply voltage is nominally 2.0 V (range 1.80–2.10 V), while I/O supplies support 2.5 V or 3.3 V. It utilizes a 255-pin plastic ball grid array (PBGA) package.

Feature Summary

• Supports dynamic power management including doze, nap, and sleep modes for low-power applications.
• Integrates a thermal management assist unit with on-chip sensor and control logic.
• Features a 60x bus interface compatible with standard processor protocols.
• Includes hardware branch prediction and out-of-order execution capabilities.

Applications

• Low-cost embedded systems
• Low-power computing devices
• Network control units

Procurement Notes

Verify the specific speed grade and package type against the datasheet ordering information. Confirm that the required core and I/O voltage levels match the selected part variant. Ensure compatibility with existing system clock configurations and thermal requirements before procurement.

Selection Notes

Select this component for designs requiring PowerPC architecture integration with moderate processing speeds. Consider the PBGA package for surface mount assembly. Evaluate power consumption profiles across different operating modes to ensure compliance with system thermal constraints.

Part Context

This processor belongs to the MPC74xx/MPC75xx family. The MPC745 differs from the MPC755 by lacking the internal L2 cache controller, relying instead on external memory interfaces. Both share identical core architectures and bus interfaces.

Replacement Considerations

The MPC755 serves as a functional equivalent with added internal L2 cache support. Verify pinout compatibility and software migration paths when substituting between these variants.