TMS320C51PZ57 - 57.14 MHz 16-Bit DSP | Texas Instruments
部品番号: TMS320C51PZ57 ✓ 生産中TMS320C51PZ57 概要
A digital signal processor, or DSP, is a processor architecture optimized for arithmetic-intensive operations on sampled audio, communications, control, and measurement signals. The TMS320C51 belongs to the broader embedded processor hierarchy and uses parallel multiply-accumulate hardware to reduce the execution time required by filters, transforms, and waveform calculations. Its fixed-point 16-bit architecture makes it suitable for systems where deterministic real-time execution and compact embedded implementation are more important than scalar CPU convenience.
The principal performance feature is a 57.14 MHz operating rate, represented in the source material as a 57 MHz device. At 5 V, the documented TMS320C5x execution times are 25 ns, 35 ns, or 50 ns per instruction cycle depending on the device speed grade. At 3 V, the corresponding available execution times are 25 ns, 40 ns, or 50 ns. These cycle times support deterministic filtering and control algorithms without requiring a separate accelerator.
The processor provides a maximum addressable data word of 16 bits and includes dedicated hardware for single-cycle 16-bit multiply/add operations. Its CMOS implementation is associated with the 100-pin PQFP package identified in distributor records. Exact operating-temperature limits, electrical thresholds, clock configuration, and exposed-pad details were not present in the supplied source text and therefore require confirmation from the complete manufacturer datasheet before a new design is released.
Typical uses include embedded audio and communications processing, digital filter implementations, industrial signal acquisition, and motor or control systems where a dedicated fixed-point DSP can execute repeated mathematical operations efficiently. The internal RAM permits the processor to handle working data and program routines on-chip, while the ROM provides fixed program storage. Systems requiring larger algorithms can add external memory if the relevant bus and wait-state configuration supports it.
Designers should verify clock, memory-interface, and power requirements against the full TMS320C51 datasheet before layout release. Decoupling, signal integrity, and unused-pin handling must follow the package-specific guidance rather than generic assumptions. Because this is a legacy embedded DSP, firmware, toolchain, memory-map, and peripheral behavior should also be validated against the intended development environment before production commitment.
This page consolidates the supplied distributor evidence, indexed datasheet specifications, package information, sourcing links, and design cautions. It also distinguishes verified facts from missing electrical details, avoiding unsupported claims while providing a practical basis for initial component screening and legacy-design maintenance.
ドロップイン代替品: TMS320C51PZ57 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストTMS320C51PZ57 仕様
| Processor Type | 16-bit digital signal processor (DSP) |
| CPU Architecture | TMS320C5x, 16-bit fixed-point |
| 最大クロック周波数 | 57.14 MHz |
| Nominal Clock Frequency | 57 MHz |
| 5 V Instruction Execution Time | 25 ns, 35 ns, or 50 ns single-cycle |
| 3 V Instruction Execution Time | 25 ns, 40 ns, or 50 ns single-cycle |
| Multiply-Accumulate Support | Single-cycle 16-bit multiply/add |
| Maximum Addressable Data Width | 16 bits |
| Data RAM | 544 words |
| Data Plus Program Space | 512 words |
| Program ROM | 8K words |
| 電源電圧 | 5.0 V |
| Process Technology | CMOS |
| パッケージ | 100-pin PQFP |
| Package Pin Count | 100 pins |
| 実装タイプ | Surface mount |
| Device Category | Embedded-DSP (Digital Signal Processors) |
TMS320C51PZ57 100 pins ピン配置ガイド
TMS320C51PZ57 (100 pins パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: TMS320C51PZ57.
詳細は データシート をご参照ください。
主な用途
TMS320C51PZ57 の用途: 6 件s: Embedded Digital Filtering, Communications Signal Processing, Industrial Measurement and Control, Embedded Audio Processing, Motor and Motion Control, Legacy DSP System Maintenance.
Embedded Digital Filtering
The TMS320C51PZ57 fits embedded filtering because its 57.14 MHz TMS320C5x core can execute fixed-point arithmetic with single-cycle 16-bit multiply/add support. The 544-word data RAM provides working storage for coefficients, samples, and intermediate results, while the 8K-word ROM can hold fixed control or signal-processing code. A practical design would partition RAM by task and avoid overflowing coefficient buffers. The main benefit is deterministic throughput, although final throughput must be calculated from the actual instruction mix because loop overhead, memory waits, and data movement affect real-time performance.
おすすめ
Communications Signal Processing
The TMS320C51PZ57 is applicable to communications signal-processing blocks that repeatedly perform filtering, correlation, modulation, or spectral arithmetic. Its 16-bit fixed-point datapath and 57.14 MHz clock provide a strong basis for deterministic real-time execution, while single-cycle 16-bit multiply/add hardware accelerates convolution-like operations. The implementation must account for the 544-word RAM limit, external memory access time, and data-word alignment. Compared with a general-purpose MCU, the DSP architecture can reduce arithmetic-loop overhead, but protocol handling, buffering, and board-level interface timing may require additional hardware.
おすすめ
Industrial Measurement and Control
The TMS320C51PZ57 suits measurement and control tasks in which sampled signals must be filtered and processed within a fixed cycle budget. Its 57.14 MHz operating rate and dedicated multiply/add path support control calculations, while the 100-pin PQFP provides a substantial connection count for address, data, control, and peripheral signals. A practical implementation should reserve RAM for acquisition buffers and use deterministic interrupt scheduling. The benefit over a scalar MCU is specialized arithmetic throughput; the tradeoff is a legacy toolchain and the need to verify timing, memory-map behavior, and electrical limits from the complete datasheet.
おすすめ
Embedded Audio Processing
The TMS320C51PZ57 can support embedded audio tasks such as tone generation, filtering, mixing, and simple voice-chain processing when the algorithm fits its 544 words of RAM and 8K words of ROM. Its 16-bit datapath suits fixed-point audio calculations, and the 57.14 MHz rate leaves processing headroom for sample buffering and control logic. An external codec such as AK4137EQ may be paired with the DSP, but the serial interface, sample rate, word format, and clocking must match exactly. Designers should budget memory before adding effects because filter history and sample buffers can consume the available RAM quickly.
おすすめ
Motor and Motion Control
The TMS320C51PZ57 is applicable to motor-control prototypes that require deterministic fixed-point computation for current, speed, or position loops. Its single-cycle multiply/add operation supports common proportional-integral and feed-forward calculations, while the 57.14 MHz clock can process multiple control tasks. The design should use periodic interrupt timing, bounded execution paths, and separate memory for control coefficients and telemetry. The DSP-specific arithmetic path can improve loop efficiency, but power sequencing, analog isolation, fault handling, and the legacy development environment may make a newer control MCU preferable for a completely new platform.
おすすめ
Legacy DSP System Maintenance
The TMS320C51PZ57 is particularly relevant to maintenance of an existing 57 MHz TMS320C5x design using the 100-pin PQFP footprint. Because the processor, 544-word RAM, 512-word combined area, and 8K-word ROM are already integrated into a proven board, replacing the surrounding application can be riskier than sourcing an identical supported device. Maintenance teams should preserve the original clock, memory expansion, emulator interface, and firmware configuration, and should verify source availability and date-code continuity before committing to new production quantities.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TMS320C51PZ57 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Processor Type | 16-bit digital signal processor (DSP) |
| Maximum Clock Frequency | 57.14 MHz |
| Supply Voltage | 5.0 V |
| CPU Architecture | TMS320C5x, 16-bit fixed-point |
| Data RAM | 544 words |
| Program ROM | 8K words |
| Package | 100-pin PQFP |
| Brand | Texas Instruments |
| Unit Price as of 2026-10-28 | $10.32 |
主な差別化要因
- High-rate 16-bit DSP arithmetic （vs TMS320C10FNLR)
- Specific internal-memory configuration （vs TMS320C10FNLR)
- Established 57 MHz legacy platform （vs Cross-brand alternatives)
設計ノート
The verified device is identified as a 5.0 V part, but the supplied data does not state its absolute maximum voltage, recommended regulator tolerance, or per-rail current limits. Before schematic release, obtain the complete TI electrical specification and select a regulator with appropriate transient response, output noise, and current margin. Confirm whether unused I/O pins are powered during sleep or reset; doing so prevents back-powering through peripheral protection networks.
Treat the 100-pin PQFP as a legacy, fine-pitch assembly package and validate the PCB footprint against the official package drawing rather than a generic 100-pin library symbol. Check pad dimensions, pin-1 orientation, solder-mask clearance, and courtyard against the assembler capability. The supplied evidence identifies PQFP100 but does not provide a verified land pattern, so no dimensions are asserted here. Prototype inspection should include continuity from power, ground, clock, and program interface to the assembled device.
Do not assume that a TMS320C51-family device is pin-compatible merely because it uses a similar CPU core. The TMS320C51PZ57 includes a verified 57.14 MHz speed point, 8K-word ROM, 544-word RAM, 512-word combined data/program space, and a 100-pin PQFP package. Any proposed substitute must match the package, clock requirements, memory organization, peripheral functions, electrical limits, and development-tool support. No drop-in alternative was verified by the supplied cross-reference search.
Plan the memory and peripheral layout before finalizing signal routing because the internal memory resources are small relative to modern DSP workloads. Preserve contiguous regions for stack, variables, coefficients, and DMA-related buffers where the architecture permits, and leave external-memory address and data lines short. Clock routing should follow the complete datasheet's topology and timing recommendations. Because no verified pin list or clock diagram was included in the supplied sources, board layout should be based on the official 100-pin package drawing and system timing calculations.
コンプライアンス情報
The supplied web results do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The device is an embedded DSP rather than an automotive-qualified power semiconductor, but no AEC-Q100 qualification claim was provided.
