TMS320C25FNL Texas Instruments Integrated Circuit (Other) In Stock
16-bit fixed-point digital signal processor (DSP) running at up to 40.96 MHz clock with 256 words on-chip data/program RAM and hardware PID control support. Features a 16-bit external data bus and address bus for real-time control and signal processing applications. Available in stock worldwide for legacy system maintenance and replacement.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 68
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- TMS320C25FNL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $29.9079(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TMS320C25FNL?
- 16-bit fixed-point DSP core clocked at up to 40.96 MHz with hardware multiply-accumulate for real-time PID control and digital filtering
- 256 words on-chip data/program RAM with 16-bit address and data buses enabling direct integration with external memory and peripherals
- Proven legacy architecture introduced in 1986 with extensive application support for motor control, industrial automation, and signal processing
What is TMS320C25FNL used for?
The TMS320C25FNL is used in legacy industrial control systems, servo motor drives, and digital signal processing boards requiring a 16-bit fixed-point DSP with hardware PID support. Its 40.96 MHz clock speed and 256-word on-chip RAM support demanding real-time control loops in manufacturing equipment and instrumentation. The part remains in demand for maintaining and repairing legacy embedded systems originally designed in the late 1980s and 1990s.
What are the specifications of TMS320C25FNL?
| Pbfree Code | Yes |
| Date Of Intro | 1986-01-01 |
| YTEOL | 3.9 |
| Additional Feature | PID CONTROL; 256 WORDS DATA/PROG RAM |
| Address Bus Width | 16 |
| Barrel Shifter | NO |
| Bit Size | 16 |
| Boundary Scan | NO |
| Clock Frequency-Max | 40.96MHz |
| External Data Bus Width | 16 |
| Format | FIXED POINT |
| Integrated Cache | NO |
| Internal Bus Architecture | MULTIPLE |
| JESD-30 Code | S-PQCC-J68 |
| JESD-609 Code | e4 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of Serial I/Os | 1 |
| Number of Timers | 1 |
| On Chip Data RAM Width | 16 |
| On Chip Program ROM Width | 16 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC68,1.0SQ |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (words) | 544 |
| ROM Programmability | MROM |
| Supply Current-Max | 185mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | DIGITAL SIGNAL PROCESSOR, OTHER |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.35 |
| Country of Origin | Philippines |
Where can I find the TMS320C25FNL datasheet?
TMS320C25FNL Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TMS320C25FNL?
Compatible alternatives and drop-in replacements for TMS320C25FNL:
Digital Signal Processor, 16-Bit Size, 16-Ext Bit, 40.96MHz, CMOS, PQCC68
Frequently Asked Questions
What is the maximum clock frequency of the TMS320C25FNL and how does it affect real-time control loop execution?
The TMS320C25FNL runs at a maximum clock frequency of 40.96 MHz, allowing execution of approximately 10 million instructions per second (MIPS) in its single-cycle instruction architecture. For a PID control loop with 16-bit fixed-point arithmetic, this throughput is sufficient to close velocity or position loops at update rates of several kilohertz, meeting the demands of servo drive and industrial motor control applications designed around this DSP.
How much on-chip RAM does the TMS320C25FNL provide, and what are the limitations for large filter or table implementations?
The TMS320C25FNL integrates 256 words of on-chip data/program RAM accessible via the 16-bit internal bus. While adequate for small PID algorithms and short FIR filter coefficient tables, designs requiring longer FIR filters (more than 64 taps at 16-bit resolution) or large lookup tables must use external memory connected to the 16-bit address and data buses, which introduces wait states and reduces effective throughput below the 40.96 MHz peak rate.
What makes the TMS320C25FNL a viable choice for repairing legacy industrial equipment compared to migrating to a modern DSP?
Migrating legacy systems built around the TMS320C25FNL to a modern DSP requires porting 16-bit fixed-point assembly code, redesigning the PCB for a new pinout, and re-qualifying the system—a process that can cost tens of thousands of dollars per machine. For small fleets of aging industrial equipment with remaining service lives of 5 to 10 years, sourcing replacement TMS320C25FNL units is far more cost-effective, particularly since the part remains available through specialty distributors at reasonable per-unit prices.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $31.4820 | $31.48 |
| 9+ | $29.9079 | $269.17 |
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