MPC745CVT350LE

Overview

The MPC745CVT350LE is a RISC microprocessor implementing the PowerPC instruction set architecture. It features a processor core with an internal L2 tag and a dedicated L2 cache interface, alongside a 60x bus. The device operates at a maximum processor frequency of 350 MHz with a VCO range up to 700 MHz. Core supply voltage is nominally 2.0 V (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 package.

Feature Summary

• Implements the PowerPC instruction set architecture with out-of-order execution capabilities
• Integrates a Level 2 cache controller with external SRAM support for flexible memory configurations
• Includes an integrated thermal management assist unit with on-chip sensor and control logic
• Supports multiple low-power static modes including doze, nap, and sleep states

Applications

• Low-cost embedded systems requiring reduced power consumption
• Network control applications utilizing the 60x bus interface
• Signal processing tasks supported by the fixed-point and floating-point units

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and speed grade. Ensure compatibility with system voltage requirements for both core and I/O interfaces. Confirm that the selected component revision aligns with the intended application's electrical specifications and thermal constraints.

Selection Notes

Select this component for designs requiring a PowerPC-compatible core with integrated L2 cache management. Consider the available operating frequencies and power modes relative to system performance needs. Evaluate the 255-pin PBGA package constraints for board layout and thermal dissipation requirements during the design phase.

Part Context

This processor belongs to the MPC74xx family, which shares architectural similarities with the MPC75xx series. Unlike the MPC755, which includes an internal L2 cache, the MPC745 variant relies on an external L2 cache interface controlled by internal tags. This distinction defines its memory hierarchy and system integration approach compared to other members of the PowerPC microprocessor line.

Replacement Considerations

The MPC755 serves as a functional equivalent within the same family, distinguished primarily by the inclusion of an internal L2 cache rather than an external interface. Verify pinout compatibility and ensure that the target system can accommodate the specific memory configuration differences between these two devices.