MPC745BVT300LE

Overview

The MPC745BVT300LE is a RISC microprocessor implementing the PowerPC instruction set architecture. It features a processor core with an integrated L2 tag and dedicated L2 cache interface, alongside a 60x bus interface. The device supports core frequencies up to 300 MHz and operates with a nominal core supply voltage of 2.0 V. It includes 32 Kbyte instruction and data caches, memory management units, and power management capabilities such as doze, nap, and sleep modes.

Feature Summary

• Integrated Level 2 cache controller and tags for external SRAM support
• Out-of-order execution pipeline with dual fixed-point units
• Hardware branch prediction and target instruction caching
• On-chip thermal sensor and dynamic power management logic

Applications

• Low-cost embedded systems
• Network control applications
• Signal processing tasks

Procurement Notes

Verify the specific speed grade and package type against the ordering information section of the datasheet. Confirm that the input threshold voltages match the system design requirements, as they are selectable via configuration pins. Ensure the component revision aligns with the intended electrical characteristics and operating conditions.

Selection Notes

Select this component for designs requiring a balance of performance and low power consumption within the PowerPC ecosystem. Consider the available L2 cache interface when comparing against variants without this feature. Evaluate the thermal resistance values relative to the expected ambient conditions and airflow in the final enclosure.

Part Context

This processor belongs to the MPC74xx family, which shares architectural similarities with the MPC75xx series. The primary distinction lies in the presence of the internal L2 cache interface in the MPC745 variant compared to the MPC755. Both implement the same core logic and peripheral interfaces defined by the PowerPC specification.

Replacement Considerations

The MPC755 serves as a functional equivalent with added L2 cache integration. Verify compatibility regarding pin assignments and voltage levels before substitution.