My Inquiry
My Account
Texas Instruments TMS320P15FNL25
- Part No.:
- TMS320P15FNL25
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- -
- Datasheet:
-
TMS320P15FNL25.pdf
- Description:
- DIGITAL SIGNAL PROCESSOR, 16-BIT
- Quantity:
- Payment:
- Shipping:
Inventory:7,463
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMS320P15FNL25 from Texas Instruments is a one-time programmable (OTP) 16-bit digital signal processor (DSP) built on CMOS technology, featuring 256-word on-chip data RAM, 4K-word on-chip OTP EPROM, and a 200-ns instruction cycle time. It implements a modified Harvard architecture with a 32-bit ALU/accumulator, 16×16-bit hardware multiplier, and 0–16-bit barrel shifter, targeting embedded real-time signal processing in telecommunications and industrial control systems.
For engineers reviewing the TMS320P15FNL25 datasheet, TMS320P15FNL25 pinout, TMS320P15FNL25 application, or TMS320P15FNL25 equivalent, this page delivers verified technical context, package-specific terminal mapping, key design parameters, and validated alternative options for legacy system maintenance and replacement design.
Technical Context
The TMS320P15FNL25 executes object-code-compatible instructions with the TMS320C1x family, supporting microcomputer mode (MC/MP = 1) where its 4K-word OTP EPROM maps directly into program memory space. Its 16-bit parallel I/O bus supports eight 16-bit channels via address-mapped ports, and it includes maskable interrupts with a four-level hardware stack.
It integrates dedicated hardware for signal-intensive operations: a single-cycle 16×16-bit twos-complement multiplier producing a 32-bit product, dual shifters (ALU barrel shifter for 0–16-bit left shifts; accumulator parallel shifter for 0/1/4-bit shifts), and on-chip clock generation via X1/X2/CLKIN oscillator circuitry - all operating from a single +5-V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 200 ns - determines maximum sustained instruction throughput of 5 MIPS; defines timing budget for external memory access and peripheral interfacing. |
| Data RAM Size | 256 words × 16 bits - provides sufficient on-chip storage for coefficient buffers, filter states, and real-time sample arrays without external RAM latency. |
| Program Memory | 4K-word OTP EPROM - enables secure, non-erasable firmware storage; eliminates need for external EPROM and associated address decoding logic. |
| Multiplier | 16 × 16-bit, 32-bit product in 1 cycle - accelerates FIR/IIR filtering, correlation, and convolution kernels critical in telecom and audio processing. |
| ALU/Accumulator | 32-bit width with high/low word access - supports double-precision arithmetic and overflow-safe accumulation for extended dynamic range in fixed-point DSP algorithms. |
| Operating Voltage | +5 V nominal - compatible with legacy TTL/CMOS logic families and standard 5-V power distribution architectures. |
| Temperature Range | 0°C to 70°C - qualified for commercial-grade industrial equipment and office-based communications hardware. |
Pinout & Package
Package: 44-pin plastic-leaded chip carrier (PLCC), FNL suffix per TI documentation. Pinout matches TMS320C15/E15/P15 FN/FZ package variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A11/PA0–PA2 | Address / Parallel I/O Port | 12-bit multiplexed address bus; lower 3 bits double as 3-channel 16-bit parallel I/O (PA0–PA2) in microcomputer mode. |
| D0–D15 | 16-bit Bidirectional Data Bus | Primary interface for program/data transfers; used for EPROM read, RAM access, and I/O port data exchange. |
| MC/MP | Mode Select Input | High = microcomputer mode (on-chip EPROM active); low = microprocessor mode (all program fetches external). |
| INT | Maskable Interrupt Input | Level-sensitive asynchronous interrupt request; triggers hardware stack push and vector fetch from fixed location. |
| CLKOUT | Clock Output | Provides 1/4 frequency of internal oscillator (X1/X2) for synchronizing peripherals or secondary logic. |
| X1 / X2/CLKIN | Oscillator Input / Clock Input | X1/X2: crystal connection for internal oscillator; CLKIN: accepts external clock source when X2 used as input. |
| MEN / DEN / WE | Memory Enable / Data Enable / Write Enable | Control signals coordinating external memory read/write cycles; MEN asserts during instruction fetch; DEN/WE control data bus direction and latching. |
| VCC / VSS | Power / Ground | +5 V supply and ground pins distributed across package corners to minimize noise coupling and IR drop. |
Key Features
| Feature | Design Value |
|---|---|
| Object-code compatibility with TMS320C10/C14/C15 | Enables reuse of existing assembly code bases and toolchains across C1x family upgrades or replacements. |
| One-time programmable (OTP) EPROM | Provides firmware security and cost-effective production programming without UV erasure infrastructure or windowed packages. |
| Modified Harvard architecture | Allows simultaneous instruction fetch and data access while permitting program-memory-to-data-memory coefficient transfers - eliminating separate coefficient ROM. |
| Four-level hardware return stack | Supports nested subroutine calls and interrupt handling without software-managed stack overhead in RAM-constrained systems. |
| Bit-selectable parallel I/O | Enables direct GPIO control per bit using standard instructions (e.g., BIOZ, BACC), simplifying sensor interface and status monitoring logic. |
Applications
| Telecom Channel Bank | Industrial Motor Controller |
|---|---|
|
Use Scenario: Real-time voice channel compression and echo cancellation in analog line cards. IC Role / Device Role / Timing Role: Primary DSP executing µ-law companding, adaptive filtering, and DTMF detection at 8-kHz sample rate. Use Value: On-chip 4K OTP EPROM stores calibrated filter coefficients and protocol stacks; 200-ns cycle time ensures deterministic execution within 125-µs frame boundaries. |
Use Scenario: Closed-loop speed and torque regulation in AC induction motor drives. IC Role / Device Role / Timing Role: Real-time PID computation, PWM waveform generation, and fault monitoring core. Use Value: 32-bit accumulator prevents overflow in long-interval integration; 16×16 multiplier computes torque error terms in single cycle for <100-µs control loop latency. |
| Medical Ultrasound Beamformer | Legacy Test Equipment Firmware |
|
Use Scenario: Digital beam steering and envelope detection in portable ultrasound units. IC Role / Device Role / Timing Role: Fixed-point signal processor performing delay-and-sum focusing and log-compression on digitized RF data. Use Value: 256-word RAM buffers 16-channel sample windows; barrel shifter scales IQ data dynamically without ALU overhead, preserving throughput for real-time imaging. |
Use Scenario: Embedded controller in discontinued automated test systems requiring field-replaceable firmware. IC Role / Device Role / Timing Role: Standalone boot processor executing self-test, calibration, and GPIB communication routines. Use Value: OTP EPROM guarantees firmware integrity across decades of operation; PLCC package allows socketed replacement without PCB rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320C15FN | Mask-programmed ROM (not OTP); requires external EPROM for field updates; identical 200-ns cycle time and 44-pin PLCC package. | Lacks firmware security and one-time field programming capability; suitable only where firmware is static and pre-production programmed. | Select when firmware revision flexibility is unnecessary and cost-per-unit favors mask ROM over OTP. |
| TMS320E15FNL25 | UV-erasable EPROM (windowed ceramic package); same 4K EPROM size and 200-ns timing but requires UV eraser and socketed programming fixture. | Enables firmware iteration during development but introduces reliability risk from quartz window contamination and UV degradation over time. | Choose for prototyping or low-volume production where firmware updates are expected post-deployment. |
Compared with TMS320C15FN and TMS320E15FNL25, the TMS320P15FNL25 uniquely combines permanent firmware security, PLCC socket compatibility, and zero external programming infrastructure - making it optimal for long-lifecycle, unattended, or safety-critical deployments where firmware tampering or accidental overwrite must be physically impossible.
Availability
TMS320P15FNL25 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motor control, medical ultrasound, and legacy test equipment requiring stable component supply across extended product lifecycles.
Supply support for TMS320P15FNL25 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog, embedded processing, and digital signal processing technologies.
The TMS320C1x product line was designed as cost-effective, single-chip DSP solutions for real-time signal processing in telecommunications, industrial automation, and instrumentation - emphasizing code compatibility, on-chip memory integration, and deterministic execution.
FAQ
What is the memory configuration of the TMS320P15FNL25?
The TMS320P15FNL25 integrates 256 words of on-chip data RAM and 4K words of one-time programmable EPROM for program storage. It does not include on-chip ROM or additional RAM beyond these allocations. External memory expansion up to 4K words is supported at full speed in microprocessor mode, but the OTP EPROM is only accessible in microcomputer mode when MC/MP is high. This configuration is fixed and cannot be altered post-fabrication.
Is the TMS320P15FNL25 pin-compatible with other TMS320C1x devices?
Yes, the TMS320P15FNL25 uses the 44-pin PLCC (FN/FZ) package and shares identical pinout, electrical characteristics, and signal definitions with TMS320C15FN and TMS320E15FNL25. All three devices use the same terminal function table, including A0–A11/PA0–PA2 addressing, D0–D15 data bus, MC/MP mode control, and X1/X2/CLKIN oscillator interface - enabling direct socket replacement in existing designs.
What development tools support the TMS320P15FNL25?
The TMS320P15FNL25 is supported by the legacy TMS320C1x assembler (ASM1X), linker (LNK1X), and simulator (SIM1X) included in TI's Code Composer Studio v1.x and earlier toolchains. Hardware debugging requires the TMS320EVM evaluation module with appropriate daughter card. No modern IDE natively supports OTP programming; field programming requires TI-approved PROM programmers compatible with TMS27C64 EPROM protocols.
Does the TMS320P15FNL25 support serial communication interfaces?
No, the TMS320P15FNL25 does not include on-chip serial ports. Unlike the TMS320C17/E17 or TMS320C14/E14 variants, it relies solely on its 16-bit parallel I/O bus and address-mapped ports for external communication. Serial functionality must be implemented externally using discrete UARTs or bit-banged GPIO - a design constraint confirmed by the absence of FSX/FSR/DRX/DX pins in its pinout and functional description.
What is the significance of the 'P' prefix in TMS320P15FNL25?
The 'P' prefix in TMS320P15FNL25 explicitly denotes a one-time programmable (OTP) EPROM version within the TMS320C1x family. As documented in SPRS009C, the 'P' devices use windowless plastic packages and store firmware permanently during final test - distinguishing them from 'C' (mask ROM), 'E' (UV-erasable EPROM), and 'LC' (low-voltage) variants. This prefix is part of TI's official device nomenclature and confirms OTP functionality without ambiguity.
TMS320P15FNL25 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Interface:
- -
- Clock Rate:
- -
- Non-Volatile Memory:
- -
- On-Chip RAM:
- -
- Voltage - I/O:
- -
- Voltage - Core:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TMS320P15FNL25 FAQ
1.How can I place an order for TMS320P15FNL25 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320P15FNL25 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMS320P15FNL25 reliable?
The price and inventory of TMS320P15FNL25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320P15FNL25 is usually 5 days.
3.What payment methods are accepted for TMS320P15FNL25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320P15FNL25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320P15FNL25?
TMS320P15FNL25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320P15FNL25 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMS320P15FNL25?
For technical support, including TMS320P15FNL25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320P15FNL25 requirements.
6.How does Aetrix verify that TMS320P15FNL25 is sourced from the original manufacturer or authorized distributors?
All TMS320P15FNL25 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMS320P15FNL25 meets industry standards.
7.What is the process for return or replacement of TMS320P15FNL25?
All TMS320P15FNL25 units undergo pre-shipment inspection (PSI). If there is an issue with TMS320P15FNL25, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMS320P15FNL25 part is unused and in its original packaging.
Return procedure for TMS320P15FNL25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMS320P15FNL25 Tags
-
TMS320C5535AZAY10
Texas Instruments
-
TMS320VC5501PGF300
Texas Instruments
-
ADSP-BF592KCPZ
Analog Devices Inc.
-
ADAU1463WBCPZ150
Analog Devices Inc.
-
TMS320VC5402PGE100
Texas Instruments
-
ADAU1701JSTZ-RL
Analog Devices Inc.
-
ADAU1701JSTZ
Analog Devices Inc.
-
TMS320VC5502PGF300
Texas Instruments
-
ADAU1462WBCPZ300RL
Analog Devices Inc.
-
ADAU1452KCPZRL
Analog Devices Inc.
-
ADAU1452WBCPZ-RL
Analog Devices Inc.
-
TMS320C6747DZKB3
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
