TMS320C25FNA

Digital Signal Processor Dsp Overview

The TMS320C25FNA is a CMOS-based second-generation digital signal processor from Texas Instruments. It features a 16-bit architecture with a 32-bit ALU and accumulator, executing instructions in 100 ns cycles. The device integrates 4K words of on-chip program ROM and 544 words of data RAM within a 128K-word addressable space. Key hardware components include a single-cycle 16x16-bit multiplier, eight auxiliary registers, and a double-buffered serial port. It operates on a single 5-V supply and supports multiprocessing via global memory allocation.

Digital Signal Processor Dsp Feature Summary

• CMOS technology with 100-ns instruction cycle time
• 4K words on-chip program ROM and 544 words data RAM
• Single-cycle 16x16-bit parallel multiplier with 32-bit product
• Double-buffered serial port for codec interface
• Bit-reversed indexed-addressing mode for FFTs

Digital Signal Processor Dsp Applications

• Telecommunications systems
• Industrial control applications
• Military signal processing
• Multiprocessor configurations

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'FNA' against the official datasheet to confirm package type and temperature range. The FNA designation typically corresponds to the 68-pin PLCC package. Confirm availability status as legacy components may have limited production runs or require obsolescence checks.

Digital Signal Processor Dsp Selection Notes

Select the TMS320C25FNA for applications requiring object-code compatibility with the TMS32020 but with enhanced CMOS power efficiency. Ensure system design accommodates the 100-ns cycle time and utilizes the 4K ROM for fixed code storage. Consider the TMS320C25-50 if faster 80-ns performance is required.

Digital Signal Processor Dsp Part Context

This component belongs to the TMS320 second-generation family, which includes the NMOS TMS32020 and the EPROM-based TMS320E25. The C25 series represents the CMOS evolution, offering lower power dissipation while maintaining architectural compatibility with previous generations.

Digital Signal Processor Dsp Replacement Considerations

The TMS320C25-50 is a high-speed variant with an 80-ns cycle time. The TMS320E25 offers identical functionality but replaces the ROM with EPROM for field reprogrammability. Both are pin-compatible.