TMS320LC50PQA - 100MHz 16-Bit Fixed-Point DSP | Texas Instruments
部品番号: TMS320LC50PQA ✓ 生産中TMS320LC50PQA 概要
A digital signal processor is a semiconductor dedicated to executing arithmetic-intensive algorithms in real time. In the broader hierarchy, the TMS320LC50 is a DSP, an embedded signal-processing IC, and a member of the Texas Instruments TMS320C5x family. Unlike a general-purpose microprocessor, its architecture emphasizes parallel multiply-and-accumulate operations, specialized addressing, and efficient execution of filtering, transform, and control algorithms.
Key features include single-cycle execution rated at 50 ns for 5 V operation and 50 ns for 3 V operation. The device provides 20 kB of on-chip RAM for data storage and 4 kB of on-chip ROM for program code, together with serial-port communication. These resources make it suitable for embedded signal processing where deterministic computation, local memory, and compact system integration are more important than general-purpose software breadth.
The TMS320C5x CPU executes 16-bit fixed-point instructions and supports 16-bit multiply-and-accumulate operations. A 50 MIPS execution rate means the processor can complete up to 50 million instruction cycles per second at the stated operating condition. The dedicated signal-processing architecture reduces the instruction overhead associated with implementing filtering and control functions on a general-purpose processor.
Typical applications include digital audio processing, industrial control, communications, instrumentation, and embedded signal-analysis systems. The 3.30 V core and I/O operating condition simplifies integration with compatible 3.3 V logic, while the 132-pin BQFP provides access to the processor, memory, serial interface, and associated control signals.
Designers must preserve adequate input, output, and ground connectivity around this high-pin-count package. Signal-integrity and power-integrity review is essential because the processor combines a 100 MHz operating requirement with numerous external memory and serial-interface connections. PCB layout, decoupling, clock routing, and exposed thermal considerations should be validated against the manufacturer datasheet before layout release.
This page consolidates the verified distributor specifications, sourcing context, comparison candidates, and practical integration considerations for the TMS320LC50PQA. It also distinguishes true pin-compatible replacements from related devices that use different packages, helping engineers avoid treating merely similar DSPs as drop-in substitutes.
ドロップイン代替品: TMS320LC50PQA — 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TMS320LC50PQA 仕様
| Product Type | Fixed-point digital signal processor (DSP) |
| CPU Word Length | 16 bit |
| 最大クロック周波数 | 100 MHz |
| Maximum Instruction Execution Rate | 50 MIPS |
| Single-Cycle Instruction Execution Time at 5 V | 25 ns, 35 ns, or 50 ns depending on device grade |
| Single-Cycle Instruction Execution Time at 3 V | 25 ns, 40 ns, or 50 ns depending on device grade |
| Core Supply Voltage | 3.30 V |
| I/O Supply Voltage | 3.30 V |
| On-Chip RAM | 20 kB |
| On-Chip ROM | 4 kB |
| Serial Port Communication | Supported |
| パッケージ | 132-pin BQFP |
| Package Body Dimensions | 24.13 mm × 24.13 mm |
| 実装タイプ | Surface mount |
| 動作温度範囲 | -40 °C to 85 °C |
TMS320LC50PQA 24.13 mm × 24.13 mm ピン配置ガイド
TMS320LC50PQA (24.13 mm × 24.13 mm 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: TMS320LC50PQA.
詳細は データシート をご参照ください。
主な用途
TMS320LC50PQA の用途: 6 件s: Digital Audio Signal Processing, Industrial Motor Control, Communications Signal Conditioning, Precision Instrumentation, Data Acquisition Front End, Digital Control and Monitoring.
Digital Audio Signal Processing
The TMS320LC50PQA fits compact digital audio processing because its 16-bit fixed-point CPU executes at up to 100 MHz and 50 MIPS, providing deterministic throughput for filtering, mixing, equalization, and other sample-based algorithms. The device includes 20 kB of RAM for working data and 4 kB of ROM for program code, allowing audio buffers and intermediate results to remain close to the processor. Its 3.30 V core and I/O operation simplifies integration with compatible 3.3 V converters and audio interfaces. The design trade-off is that its legacy architecture and limited memory require disciplined buffer management and careful migration planning for modern software tools.
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Industrial Motor Control
The TMS320LC50PQA is applicable to industrial feedback control because its 50 MIPS fixed-point execution rate supports sampling, digital filtering, control-law calculation, and actuator-update routines within a deterministic processing loop. The 16-bit architecture matches the precision commonly required for intermediate control values, while the 3.30 V operating condition supports 3.3 V control electronics. The on-chip 20 kB RAM can hold sampled state and coefficient tables, and the 4 kB ROM can support fixed initialization behavior. The principal implementation concern is not raw instruction count but deterministic scheduling and isolation between real-time control code and supervisory tasks.
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Communications Signal Conditioning
The TMS320LC50PQA can implement communications signal-conditioning functions when fixed-point throughput and predictable execution are priorities. Its 100 MHz clock and 50 MIPS rate allow filters, interpolators, decimators, and framing algorithms to execute on a dedicated processor rather than a general-purpose CPU. Serial-port communication supports systems that require a dedicated peripheral channel, and 20 kB of RAM provides space for samples and state variables. Designers must select the correct speed grade, validate external memory timing where applicable, and account for the trade-off that a legacy DSP may require older code-generation tools or more manual memory optimization.
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Precision Instrumentation
The TMS320LC50PQA is suitable for embedded measurement and instrumentation systems that perform real-time filtering or calibration on sampled data. Its 16-bit fixed-point instruction set, 50 MIPS execution rate, and 20 kB RAM provide a practical combination for waveform processing, moving averages, adaptive filters, and sensor-signal conditioning. The 132-pin BQFP provides the external connections expected in a processor-centered design, while 3.30 V core and I/O operation can simplify rail sharing with compatible 3.3 V converters. Engineers should verify the required external memory, ADC interface, clock-source tolerance, and calibration update path against the manufacturer datasheet before layout.
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Data Acquisition Front End
The TMS320LC50PQA can serve as the processing engine in a data-acquisition front end where sampled information must be filtered or reduced in real time. A 16-bit DSP operating at up to 100 MHz supports deterministic handling of 50 MIPS instruction cycles, while the available RAM accommodates acquisition buffers and filter state. The 3.30 V I/O requirement can simplify connections to compatible converters and logic, subject to timing and signal-integrity checks. The design trade-off involves power, package size, and toolchain maturity: a modern low-power MCU or FPGA may be preferable for new platforms, while this processor makes sense when preserving an established TMS320C5x code base is valuable.
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Digital Control and Monitoring
The TMS320LC50PQA is appropriate for digital control, monitoring, and status-logging functions where repeatable processing of sensor inputs is required. Its 50 MIPS execution capability and 16-bit fixed-point format align with control coefficients and sampled process variables, while 20 kB of RAM can hold histories, filter coefficients, and operating state. Serial communication allows the processor to exchange supervisory data with a controller, and 3.30 V operation supports integration with 3.3 V digital logic. Before adoption, teams should verify that the legacy development environment remains supported and that the application can be partitioned to avoid missing timing deadlines.
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おすすめ製品の概要
エンジニアリング参考データ: TMS320LC50PQA — 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 | TMS320C31PQA40 | TMS320VC549PGER100 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 132-pin BQFP, 24.13 mm × 24.13 mm | PQA package; exact pin compatibility not verified | 144-pin LQFP; not the same footprint |
| Processor Type | 16-bit fixed-point DSP | Texas Instruments DSP | Fixed-point DSP |
主な差別化要因
- Verified operating and processing headline （vs TMS320C31PQA40)
- Package footprint distinction （vs TMS320VC549PGER100)
- Integrated 3.3 V processing resources （vs TMS320VC549PGER100)
設計ノート
Use separate, low-impedance return paths for the 3.30 V core and I/O supplies even though the verified specification identifies the same nominal voltage for both domains. Place the manufacturer-recommended bypass capacitors directly beside the corresponding power and ground pins, minimize loop area, and route high-current return current away from sensitive signal paths. Do not substitute generic bulk capacitors for the datasheet network without checking effective capacitance and DC-bias behavior. Because no complete electrical table was supplied, voltage tolerances, current limits, sequencing, and capacitor values remain subject to the Texas Instruments datasheet.
Treat the 100 MHz clock and the associated address, data, and control paths as a controlled-impedance design problem. Route the clock away from serial and analog inputs, provide a continuous reference plane, avoid stubs, and match external-interface timing to the selected speed grade. The 132-pin BQFP footprint has substantial lead pitch and pin count, so assembly stencil design, solder mask definition, component placement, and copper balancing can affect both solderability and thermal behavior. Use the exact manufacturer land pattern rather than scaling a generic 132-pin drawing.
Do not treat the TMS320C31PQA40 as a drop-in replacement merely because both ordering codes use a PQA package designation, and do not use the 144-pin TMS320VC549PGER100 on the same PCB. The supplied evidence does not verify identical pin assignments, electrical limits, memory organization, peripherals, or software compatibility. A valid migration requires a line-by-line pin comparison, timing analysis, memory-map review, and recompilation or hardware test. The quoted alternatives are included only for engineering comparison and are intentionally excluded from the drop-in alternatives array.
コンプライアンス情報
The supplied verified data mentions RoHS and REACH only in a comparison-tool snippet and does not provide explicit compliance declarations for the TMS320LC50PQA. AEC-Q100 is treated as not applicable because this is an industrial-temperature DSP rather than an automotive-qualified ordering variant, but the ordering-variant qualification record was not provided.
