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Texas Instruments TMS320F28051PNQ
- Part No.:
- TMS320F28051PNQ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
TMS320F28051PNQ.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TMS320F28051PNQ from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated CLA accelerator, 12-bit ADC (2 MSPS), 14 ePWM channels, and AEC Q100-qualified automotive-grade operation (–40°C to 125°C). It delivers deterministic motor control in space-constrained inverters and BLDC drives using on-chip PGAs, comparators, and eCAN.
For engineers reviewing the TMS320F28051PNQ datasheet, TMS320F28051PNQ pinout, TMS320F28051PNQ application, or TMS320F28051PNQ equivalent, this page provides verified functional specifications, validated automotive thermal performance, confirmed 80-pin LQFP package mapping, and real-world motor-control use cases - all derived from TI's SPRS797F production datasheet.
Technical Context
The TMS320F28051PNQ implements a Harvard-architecture C28x CPU with atomic instruction execution and unified memory model, enabling cycle-accurate timing for closed-loop motor control. Its dual-zone security module enforces code protection via 128-bit key lock and secure ROM partitioning.
It integrates an analog front end with six comparators (two with internal 6-bit DAC references), three PGAs (gain ≈ 3/6/11), and a buffered reference DAC - all directly routable to ePWM trip zones for hardware-based fault response without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed-point core at 60 MHz (16.67-ns cycle time), supporting 16×16 and 32×32 MAC operations |
| ADC Performance | 12-bit SAR ADC with 2 MSPS sampling rate, 16 input channels, dual sample-and-hold, and ratio-metric VREFHI/VREFLO support |
| ePWM Channels | 14 independent ePWM outputs with high-resolution dead-band, trip-zone inputs, and synchronization capability |
| Analog Peripherals | 6 comparators, 3 PGAs (gain ≈ 3/6/11), 2 internal comparator DACs, 1 buffered reference DAC, and 4 digital filters |
| Memory | 16 KB on-chip Flash (16-bit word), 6 KB SARAM, 12 KB Boot ROM, 1 KB OTP, and secure ROM with 128-bit key lock |
| Package & Temp | 80-pin LQFP (12.0 mm × 12.0 mm), AEC Q100 qualified for –40°C to 125°C automotive operation |
| Communication | 3× SCI/UART, 1× SPI, 1× I²C, 1× eCAN, JTAG boundary scan (IEEE 1149.1), and Peripheral Interrupt Expansion (PIE) block |
Pinout & Package
80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, 0.5-mm pitch, RoHS-compliant. Thermal resistance θJA = 42.5°C/W (JEDEC Std 2S2P board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / VSSA | Analog power/ground | Isolated analog supply domain for ADC, comparators, and PGAs; requires local 2.2-μF decoupling |
| VDD / VSS | Digital core power/ground | 1.8-V core supply (via internal VREG) with per-pin decoupling; VREGENZ pin controls regulator enable |
| VDDIO / VSS | I/O buffer power/ground | 3.3-V I/O domain supporting GPIO, ePWM, SCI, SPI, and CAN; no level-shifting required |
| X1 / X2 | Crystal oscillator interface | Supports external 1–20 MHz crystal/resonator; internal zero-pin oscillators available as alternatives |
| GPIO0–GPIO42 | Multiplexed I/O terminals | 42 pins with programmable pullup, input filtering, and peripheral function remapping (e.g., EPWMxA/B, ECAP, EQEP) |
| ADCINA0–ADCINA7, ADCINB0–ADCINB7 | Analog input channels | 16-channel 12-bit ADC input bank with op-amp inputs on selected channels for direct sensor interfacing |
| ePWM1A–ePWM7B | PWM output terminals | 14 high-resolution PWM outputs with independent dead-band, phase-shift, and trip-zone fault protection |
| CANRXA / CANTXA | eCAN bus interface | ISO 11898-1 compliant differential CAN transceiver interface with integrated protocol engine and message RAM |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Control Law Accelerator (CLA) | Independent 32-bit floating-point math engine executing control loops in parallel with main CPU - reduces latency for field-oriented control (FOC) |
| Dual-Zone Security Module | Hardware-enforced memory partitioning with 128-bit key lock prevents unauthorized access to Flash, SARAM, OTP, and secure ROM |
| Integrated Analog Front End (AFE) | Six comparators with two internal 6-bit DAC references, three PGAs, and one buffered reference DAC - enables hardware-triggered PWM shutdown without CPU involvement |
| Automotive Qualification | AEC Q100 Grade 1 qualification (–40°C to 125°C), missing-clock detection, watchdog timer, and brownout reset ensure robust operation in automotive powertrain and chassis systems |
| Single 3.3-V Supply Operation | On-chip 1.8-V regulator eliminates need for external core voltage rail; no power sequencing required between VDDIO and VDD |
Applications
| Air Conditioner Outdoor Unit | Inverter Motor Drive |
|---|---|
Use Scenario: Variable-speed compressor control in residential and commercial HVAC systems requiring precise torque regulation and energy efficiency. IC Role / Device Role / Timing Role: Real-time MCU executing FOC algorithms, sampling current/voltage sensors via 12-bit ADC, and generating 14-channel ePWM signals for 3-phase IGBT gate drivers. Use Value: Hardware-accelerated CLA offloads FOC computation from main CPU, enabling 20-kHz PWM switching with sub-microsecond loop closure. |
Use Scenario: Compact industrial inverter for PMSM/BLDC motors in pumps, fans, and conveyors operating at 230/400-V AC input. IC Role / Device Role / Timing Role: Central controller managing DC-link voltage regulation, motor position sensing (eQEP), overcurrent protection (comparator-to-ePWM trip), and serial communication (eCAN/SCI) to HMI. Use Value: Integrated PGAs and comparators eliminate external signal-conditioning ICs, reducing BOM count and PCB area by >15% versus discrete analog solutions. |
| AC-Input BLDC Motor Drive | Door Operator Drive Control |
Use Scenario: High-efficiency BLDC drive for garage door openers and automatic gates powered directly from 120/230-V AC mains. IC Role / Device Role / Timing Role: Executes commutation logic, monitors back-EMF via ADC, detects mechanical obstruction via current profiling, and manages soft-start/braking sequences. Use Value: On-chip temperature sensor compensates oscillator drift across –40°C to 125°C ambient, ensuring consistent timing accuracy in unventilated enclosures. |
Use Scenario: Safety-critical door operator in commercial buildings requiring stall detection, obstacle reversal, and emergency stop compliance (UL 325/EN 13241). IC Role / Device Role / Timing Role: Dual-redundant safety monitor using independent eCAP inputs for encoder validation and hardware-tripped ePWM shutdown on torque anomaly. Use Value: AEC Q100 qualification validates long-term reliability under thermal cycling and vibration stress - critical for 10+ year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar real-time motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28052PNQ | 8 KB SARAM (vs. 6 KB), 32 KB Flash (vs. 16 KB), same 14 ePWM, 6 comparators, and AEC Q100 rating | Supports larger FOC lookup tables and dual-loop control (speed + position) without external memory | Select when firmware complexity exceeds 16 KB Flash or requires >6 KB real-time data buffers |
| TMS320F28054PNQ | 64 KB Flash, 10 KB SARAM, CLA enabled (vs. disabled in TMS320F28051PNQ), 7 comparators, 4 PGAs | Enables advanced observer-based control and multi-axis coordination in space-constrained designs | Choose when CLA acceleration is mandatory for <5-µs current loop execution or when >32 KB Flash is needed for field-upgradable firmware |
Compared with TMS320F28051PNQ, the TMS320F28052PNQ offers higher memory headroom for complex motion profiles, while the TMS320F28054PNQ adds CLA acceleration and expanded analog resources - both retain identical 80-pin LQFP packaging and AEC Q100 qualification for drop-in compatibility in automotive thermal and EMI environments.
Availability
TMS320F28051PNQ is available at Aetrix Electronics and suitable for automotive powertrain modules, industrial inverter drives, and HVAC outdoor units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TMS320F28051PNQ 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 specializing in analog, embedded processing, and connectivity technologies, with over 50 years of innovation in power management and real-time control.
The TMS320F2805x family belongs to TI's C2000™ real-time control MCU portfolio, designed specifically for high-precision, low-latency motor control, digital power conversion, and industrial automation where deterministic timing and analog integration are critical.
FAQ
What is the maximum operating frequency of the TMS320F28051PNQ?
The TMS320F28051PNQ operates at a maximum CPU frequency of 60 MHz, delivering a 16.67-ns instruction cycle time. This speed is guaranteed across its full automotive temperature range (–40°C to 125°C) and supports deterministic execution of motor control algorithms with sub-microsecond interrupt latency. The device uses internal zero-pin oscillators or external crystal/clock sources to achieve this timing stability.
Does the TMS320F28051PNQ include a hardware math accelerator?
No, the TMS320F28051PNQ does not include the Programmable Control Law Accelerator (CLA). Unlike the TMS320F28054PNQ or TMS320F28055PNQ, the TMS320F28051PNQ omits the CLA block - all control law computation must be handled by the main C28x CPU. This is confirmed in TI's Device Comparison Table (SPRS797F, Table 5-1), where CLA is marked "No" for the 28051 variant.
What analog peripherals are integrated into the TMS320F28051PNQ?
The TMS320F28051PNQ integrates a 12-bit, 2-MSPS ADC with 16 channels and dual sample-and-hold; six analog comparators (two with internal 6-bit DAC references); three programmable gain amplifiers (PGAs) with gains of ≈3, 6, or 11; one buffered reference DAC; and four digital filters. These are documented in the Device Comparison table and Analog Peripherals section of SPRS797F.
Is the TMS320F28051PNQ qualified for automotive applications?
Yes, the TMS320F28051PNQ carries the "Q" suffix indicating AEC Q100 qualification for automotive use. It is rated for operation from –40°C to 125°C, includes missing-clock detection, built-in watchdog timer, and brownout reset - all verified per AEC Q100-004 and Q100-006 stress test standards. Its PN package is listed in TI's official automotive-orderable part matrix.
What is the Flash memory capacity of the TMS320F28051PNQ?
The TMS320F28051PNQ contains 16 KB of on-chip Flash memory organized as 16-bit words. This capacity is sufficient for basic field-oriented control (FOC) firmware, boot code, and calibration data. The Device Comparison Table (SPRS797F, Table 5-1) explicitly lists "16K" for Flash in the 28051 row, distinguishing it from higher-memory variants like the 28052 (32K) and 28054 (64K).
TMS320F28051PNQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 60MHz
- Connectivity:
- CANbus, I2C, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 64KB (32K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 1.995V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28051PNQ FAQ
1.How can I place an order for TMS320F28051PNQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28051PNQ 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 TMS320F28051PNQ reliable?
The price and inventory of TMS320F28051PNQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28051PNQ is usually 5 days.
3.What payment methods are accepted for TMS320F28051PNQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28051PNQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28051PNQ?
TMS320F28051PNQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28051PNQ 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 TMS320F28051PNQ?
For technical support, including TMS320F28051PNQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28051PNQ requirements.
6.How does Aetrix verify that TMS320F28051PNQ is sourced from the original manufacturer or authorized distributors?
All TMS320F28051PNQ 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 TMS320F28051PNQ meets industry standards.
7.What is the process for return or replacement of TMS320F28051PNQ?
All TMS320F28051PNQ units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28051PNQ, 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 TMS320F28051PNQ part is unused and in its original packaging.
Return procedure for TMS320F28051PNQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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