TMS320C25FNLR50

Digital Signal Processor Dsp Overview

The TMS320C25FNLR50 is a CMOS-based second-generation digital signal processor from Texas Instruments. It features an 80-ns instruction cycle time and operates on a single 5-V supply. The device integrates 4K words of on-chip program ROM and 544 words of on-chip data RAM within a 128K-word total addressable space. Key architectural components include a 32-bit ALU/accumulator, a 16x16-bit hardware multiplier with a 32-bit product, and eight auxiliary registers. It supports direct memory access via HOLD/HOLDA signals and includes a double-buffered serial port for codec interfacing.

Digital Signal Processor Dsp Feature Summary

• 80-ns instruction cycle time using CMOS technology
• 4K words on-chip program ROM and 544 words on-chip data RAM
• 16x16-bit parallel multiplier with single-cycle multiply/accumulate capability
• Double-buffered serial port and on-chip timer

Digital Signal Processor Dsp Applications

• Telecommunications systems requiring real-time signal processing
• Industrial control applications utilizing the on-chip timer and interrupts
• Multiprocessor configurations with global data memory sharing

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'R50' against official Texas Instruments documentation to confirm reel packaging and speed grade specifications. Ensure compatibility with existing 68-pin PGA or PLCC footprints during procurement planning. Confirm availability status as this is a legacy component series.

Digital Signal Processor Dsp Selection Notes

Select the TMS320C25FNLR50 when an 80-ns cycle time is required for high-speed DSP tasks. Choose this model over the standard TMS320C25 (100-ns) for performance-critical designs. Ensure the application utilizes a single 5-V power supply and requires the specific 4K ROM capacity for embedded firmware storage.

Digital Signal Processor Dsp Part Context

This component belongs to the TMS320C2x family, which represents the second generation of Texas Instruments DSPs. It is object-code compatible with the NMOS TMS32020 but offers enhanced features such as additional instructions and faster clock speeds due to CMOS fabrication. It serves as a bridge between first-generation devices and later floating-point architectures like the TMS320C30.

Digital Signal Processor Dsp Replacement Considerations

The TMS320C25-50 is architecturally identical and offers the same 80-ns cycle time. Verify package pinout compatibility if substituting between PGA and PLCC variants. No direct modern replacement exists within the same form factor; migration to newer C5x or C6x families requires significant software and hardware redesign.