TMS320C51PZ80

Digital Signal Processor Dsp Overview

The TMS320C51PZ80 is a 16-bit fixed-point digital signal processor from the Texas Instruments TMS320C5x family, fabricated using high-performance static CMOS technology. It features a modular Harvard architecture with single-cycle 16 × 16-bit multiply/add capabilities and execution times of 20 ns, 25 ns, 35 ns, or 50 ns depending on voltage and speed grade. The device includes 544 words of dual-access DARAM, 512 words of SARAM, and 8K words of on-chip ROM. It operates at 5 V with up to 64K external addressable memory space and supports multiple clocking options via an internal PLL.

Digital Signal Processor Dsp Feature Summary

• Single-cycle 16 × 16-bit multiply and add operations
• On-chip memory: 544-word DARAM, 512-word SARAM, 8K-word ROM
• Full-duplex synchronous serial port and buffered serial port (BSP)
• Host Port Interface (HPI) for parallel host communication
• IEEE Standard 1149.1 JTAG test access port

Digital Signal Processor Dsp Applications

• Coder/decoder interface applications
• Time-division-multiplexed (TDM) serial communications
• Control operations utilizing on-chip timer
• Low-power embedded signal processing systems

Digital Signal Processor Dsp Procurement Notes

Verify the specific speed grade suffix (e.g., 80 indicating 20-ns cycle time) against the official datasheet Table 1. Confirm the PZ suffix corresponds to the 100-pin Thin Quad Flat Package. Ensure power supply requirements match the 5-V operation specifications for the C51 variant.

Digital Signal Processor Dsp Selection Notes

Select this component when a 16-bit DSP with 8K on-chip ROM and HPI support is required. Compare against TMS320LC51 for 3.3-V operation needs. Verify pin compatibility if migrating from other C5x devices like the C52 or C53, as package pinouts vary significantly between PJ, PZ, PQ, and PBK types.

Digital Signal Processor Dsp Part Context

This part belongs to the TMS320C5x generation, which offers upward-compatible source code with earlier C1x and C2x DSPs. The C51 variant specifically provides a balance of moderate on-chip memory and extensive I/O peripherals, distinguishing it from the C52 (no ROM) and C53 (larger ROM).

Digital Signal Processor Dsp Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.