TMS320C15NL - 16-Bit 20.5 MHz DSP | Texas Instruments
料号： TMS320C15NL ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TMS320C15NL 概述
A digital signal processor is a specialized microprocessor architecture optimized for arithmetic operations on streams of sampled data. Unlike a general-purpose processor, a DSP emphasizes multiply-accumulate throughput, predictable instruction timing, dedicated memory organization, and efficient execution of filters, correlations, transforms, and control loops. TMS320C1x devices are therefore positioned between general-purpose embedded processors and software-programmable signal-processing engines.
The verified source data identifies the TMS320C15NL as a fixed-point 16-bit processor with a maximum clock frequency of 20.5 MHz, performance to 8.77 MIPS, object-code compatibility across TMS320C1x devices, and 144 or 256 words of on-chip data RAM depending on the device variant. The C1x architecture supports deterministic digital signal-processing software while retaining compatibility with existing object code.
The TMS320C15NL is suitable for industrial control, communications signal processing, audio and speech processing, modulation, filtering, instrumentation, and embedded control systems where fixed-point arithmetic and predictable execution are useful. Its 40-pin DIP package also makes it accessible for prototype boards, legacy equipment, educational platforms, and systems that favor through-hole construction.
The primary design consideration is that the processor is a legacy-class DSP with limited memory and peripheral resources compared with modern mixed-signal processors. Firmware should be reviewed for timing, stack usage, data representation, and input-bandwidth assumptions. Signal-chain designs should include appropriate input conditioning, scaling, anti-alias filtering, and output reconstruction filtering where appropriate.
This page consolidates the verified distributor and manufacturer-linked information for the TMS320C15NL, including practical DSP context, package details, sourcing considerations, and design guidance. It does not invent unreported electrical limits, prices, lifecycle promises, or alternate-device specifications; missing technical fields are explicitly identified for engineering review.
直接替换替代料： TMS320C15NL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TMS320C15NL-25
✅ 直接替换📋 参考替代料（不在目录中）
TMS320C15NL 规格参数
| Product Type | Fixed-point digital signal processor |
| Word Length | 16 bit |
| 最大时钟频率 | 20.5 MHz |
| Performance | 5 MIPS to 8.77 MIPS |
| Architecture Family | TMS320C1x |
| Object Code Compatibility | Compatible across all TMS320C1x devices |
| On-Chip Data RAM | 144 words or 256 words, depending on variant |
| Package Type | 40-pin DIP |
| 安装类型 | Through-hole |
| Temperature Grade | Commercial |
| Terminal Count | 40 |
| Processor Class | Digital signal processor |
| Numeric Format | Fixed point |
| Signal-Processing Use | Communications, control, audio, filtering, and instrumentation |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
TMS320C15NL 40-pin dip 引脚配置指南
TMS320C15NL（40-pin dip 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TMS320C15NL.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TMS320C15NL 适用于 6 应用s: Communications Signal Processing, Audio and Speech Processing, Industrial Control and Automation, Instrumentation and Measurement, Feedback and Motor-Control Loops, Embedded Legacy DSP Platform.
Communications Signal Processing
The TMS320C15NL fits deterministic communications tasks such as digital filtering, correlation, modulation support, and signal conditioning. Its 16-bit fixed-point architecture and verified maximum frequency of 20.5 MHz provide a practical platform for embedded processing when the algorithm fits the available memory and execution budget. Designers should scale samples carefully to avoid overflow and should account for anti-alias filtering before the ADC and reconstruction filtering after the DAC. Because the verified data does not provide peripheral details or throughput for a specific algorithm, clocking and memory behavior must be confirmed from the manufacturer documentation.
推荐
Audio and Speech Processing
The TMS320C15NL can be used for low-rate audio, speech, and other fixed-point signal-processing functions where deterministic multiply-accumulate operations are more important than a large general-purpose software ecosystem. Its 16-bit fixed-point format aligns with common audio word sizes, while performance to 8.77 MIPS provides a defined processing budget for filters and control loops. The practical constraint is limited on-chip data RAM, so buffer sizing and code placement need to be checked against the exact device variant. External converters and analog filtering remain essential for a complete audio path.
推荐
Industrial Control and Automation
The TMS320C15NL is appropriate for compact control systems that combine sampled feedback with fixed-point filtering or signal analysis. Its predictable instruction-oriented execution model can support control loops without relying on a complex real-time operating system, provided interrupt latency and worst-case cycle counts are verified. The 40-pin DIP package also simplifies prototype and legacy-controller board construction. Engineers should separate analog input conditioning from the DSP, maintain conservative timing margins, and confirm that the commercial temperature grade and electrical limits match the deployment environment.
推荐
Instrumentation and Measurement
The TMS320C15NL can serve as the computational core of a compact measurement instrument when sampled data requires real-time filtering, calibration, or statistical processing. The verified 20.5 MHz maximum clock and fixed-point DSP positioning allow deterministic handling of recurring sample blocks, while the limited RAM makes compact buffering important. A practical design should include calibrated ADC and DAC interfaces, protection from out-of-range inputs, and a defined test path for gain, offset, and timing. Because exact ADC, timer, and memory resources are not supplied here, the engineer must use the device datasheet for implementation details.
推荐
Feedback and Motor-Control Loops
The TMS320C15NL can execute fixed-point feedback algorithms, including filtering, proportional-integral control, and signal decomposition, when the loop timing and memory budget are acceptable. Its DSP-oriented arithmetic helps reduce the overhead associated with general-purpose control code, and the DIP package is useful for legacy or educational control boards. The design should define worst-case execution time, protect against unexpected interrupts, and verify that actuator drive stages remain outside the processor supply and signal limits. The commercial grade shown in the verified data should be checked against the actual enclosure temperature and industrial requirement.
推荐
Embedded Legacy DSP Platform
The TMS320C15NL is useful for maintaining or reproducing legacy embedded signal-processing systems, especially where object-code compatibility across TMS320C1x devices simplifies software reuse. It can help designers preserve an existing 40-pin through-hole architecture while validating a board, restoring equipment, or building a teaching platform. Migration to a modern MCU or DSP may require changes in instruction set, toolchain, memory map, and peripherals, so this part is most valuable when retaining the original architecture is important. Confirm package pinout, clock source, and memory requirements before ordering replacement inventory.
推荐
推荐产品汇总
工程参考数据： TMS320C15NL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TMS320C15NL-25 |
|---|---|---|
| Package | 40-pin DIP through-hole | 40-terminal DIP through-hole |
| Brand | Texas Instruments | Texas Instruments |
关键差异点
- Dedicated fixed-point DSP positioning （对比 General-purpose embedded processor)
- TMS320C1x software continuity （对比 A newer non-C1x DSP)
- Legacy through-hole integration （对比 Modern surface-mount MCU)
设计说明
Before layout, verify the exact TMS320C15NL supply voltage, clock input requirements, and I/O levels from the manufacturer datasheet; those electrical values are not included in the supplied verified records. Provide local bypass capacitance at the device power pins and route supply and return paths to minimize loop area. If external converters or memory are used, include controlled power-up sequencing and ensure signal amplitudes remain within the device limits.
The verified package is a 40-pin DIP through-hole part, so preserve adequate footprint clearance for the socket or PCB pads and provide a grounded keepout where appropriate. Separate analog input and clock routing from high-current digital switching paths. Because the verified data does not include the complete pinout, do not assign signals to pins from package count alone; cross-check the manufacturer pin diagram before fabrication.
Do not substitute a newer MCU or DSP solely because it has similar advertised clock speed. The TMS320C1x architecture, memory map, instruction timing, peripherals, toolchain, and software object format may differ substantially. A true replacement must be checked for pin compatibility, electrical limits, memory behavior, interrupt semantics, and software migration requirements.
For signal-processing boards, place analog converters and input conditioning close to the corresponding processor interface, then keep digital clock and memory routing away from sensitive analog nodes. Use a defined grounding and return-current strategy, and test the board with representative signals rather than only a zero-input condition. The supplied data does not specify recommended layout values, so component placement should follow the manufacturer documentation and measured noise requirements.
合规信息
The supplied verified records identify a commercial-grade legacy DSP but do not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification evidence. Compliance must be confirmed from the manufacturer or authorized distributor documentation for the exact ordering code.
