TS68040VR25A

Overview

The TS68040VR25A is a third-generation, 32-bit microprocessor from the M680x0 family. It integrates an integer unit, an IEEE 754-compatible floating-point unit (FPU), and independent instruction and data memory management units (MMUs). The device features 4K bytes of physical instruction cache and 4K bytes of physical data cache accessed simultaneously. It supports a 25 MHz clock frequency with a 5V supply voltage. The processor provides a 4G byte direct addressing range and includes bus snooping logic for multimaster applications.

Feature Summary

• Integrates concurrent execution units including an integer unit, FPU, and MMUs to maximize throughput
• Supports virtual memory systems with independent translation mechanisms for instructions and data
• Maintains user-object-code compatibility with earlier TS68000 microprocessors
• Includes dedicated on-chip bus snooping logic to ensure cache coherency in multiprocessing environments

Applications

• High-performance embedded computing systems requiring virtual memory support
• Multimaster and multiprocessing architectures utilizing bus snooping
• Applications demanding IEEE 754-compatible floating-point arithmetic operations
• Systems requiring object-code compatibility with legacy 68000 family software

Procurement Notes

Verify that the specific suffix VR25A corresponds to the required package type and screening level. Confirm compliance with MIL-STD-883 Class B or Atmel standards if specified for the application. Ensure the ordering documentation matches the exact speed grade and voltage requirements defined in the datasheet electrical characteristics.

Selection Notes

Select this component when high-performance 32-bit processing is required alongside integrated floating-point capabilities. Consider the thermal dissipation requirements associated with the HCMOS technology and output buffer configurations. Evaluate the need for simultaneous instruction and data cache access to optimize system latency and throughput performance.

Part Context

The TS68040 represents the third generation of the 68000-compatible microprocessor line. It enhances previous models by integrating separate caches and an FPU on a single chip. This architecture improves performance over earlier generations while maintaining backward compatibility. The device utilizes highly integrated HCMOS technology to balance speed and power consumption.

Replacement Considerations

TS68040MF33