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Texas Instruments TMS320F28033PNT
- Part No.:
- TMS320F28033PNT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
TMS320F28033PNT.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:121
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Product details
Overview
TMS320F28033PNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated Control Law Accelerator (CLA), 32 KB on-chip Flash, 10 KB SARAM, 14-channel 12-bit ADC (4.6 MSPS), and 14 ePWM channels including 7 high-resolution PWM outputs. It operates from a single 3.3-V supply and targets closed-loop motor control in solar inverters, EV charging power modules, and industrial AC-DC converters.
For engineers reviewing the TMS320F28033PNT datasheet, TMS320F28033PNT pinout, TMS320F28033PNT application, or TMS320F28033PNT equivalent, key selection criteria include CLA offload capability for real-time control law execution, HRPWM dual-edge modulation support, analog comparator routing to PWM trip zones, and LQFP-80 package compatibility with industrial thermal and layout constraints.
Technical Context
The TMS320F28033PNT implements a Harvard-architecture C28x CPU with atomic instructions and zero-wait-state memory access, enabling deterministic interrupt latency under 100 ns. Its CLA executes floating-point control loops independently of the main CPU using dedicated RAM and peripherals accessible via shared memory mapping.
Peripheral integration includes eCAP, eQEP, HRCAP, and dual-sample-and-hold ADC with ratio-metric VREFHI/VREFLO references. All analog inputs are mapped to AIO or GPIO pins with programmable filtering, and comparators feature internal 10-bit DACs routed directly to PWM trip logic for fast overcurrent protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed-point, 60 MHz (16.67 ns cycle time), Harvard bus, unified memory model |
| Control Law Accelerator | 32-bit floating-point CLA with independent program/data RAM; executes control code concurrently with CPU |
| Flash Memory | 32 KB × 16-bit, secure with 128-bit key lock; supports in-field firmware updates |
| ADC Performance | 12-bit, 4.6 MSPS, 16-channel input mux, 216.67 ns conversion time, dual sample-and-hold |
| ePWM Channels | 14 total, including 7 high-resolution (HRPWM) channels supporting dual-edge frequency modulation |
| Analog Comparators | 3 comparators with integrated 10-bit DACs; outputs directly route to ePWM trip zones for hardware fault response |
| Package & Temp Range | LQFP-80 (12 mm × 12 mm), rated for –40°C to 105°C operation (T grade) |
Pinout & Package
Package: Low-Profile Quad Flatpack (LQFP), 80-pin, body size 12.0 mm × 12.0 mm, exposed pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO | Power supply rails | VDD = core/digital I/O (3.3 V); VDDA = analog domain (3.3 V); VDDIO = I/O buffer (3.3 V); no sequencing required |
| VSS, VSSA, VREFLO | GND and reference return | VSS = digital ground; VSSA = analog ground; VREFLO = ADC reference low (tied to VSSA) |
| GPIO0–GPIO44 | Configurable I/O | 45 total GPIO with input filtering; multiplexed with ePWM, eCAP, eQEP, SPI, SCI, I²C, LIN, eCAN functions |
| X1, X2 | Crystal oscillator terminals | Support external crystal/resonator up to 20 MHz; internal PLL generates 60-MHz SYSCLK |
| TCK, TMS, TDI, TDO, TRST | JTAG debug interface | IEEE 1149.1-compliant boundary scan; TRST requires external 2.2-kΩ pulldown resistor |
Key Features
| Feature | Design Value |
|---|---|
| Single-rail 3.3-V operation | Integrated voltage regulator eliminates need for external DC/DC converter or multi-rail sequencing |
| Hardware-based safety response | Comparator outputs directly trigger ePWM trip zones for sub-100 ns overcurrent shutdown without CPU intervention |
| Real-time control acceleration | CLA executes PID, field-oriented control, or sensorless algorithms in parallel with main CPU-reducing loop latency by >40% |
| Analog integration for motor control | 14-channel ADC with dual sample-and-hold, 3 analog comparators with DACs, and HRCAP enable precise timing capture for rotor position sensing |
| Secure firmware deployment | 128-bit code-security module locks Flash/SARAM/OTP; prevents reverse engineering and unauthorized firmware modification |
Applications
| Motor Drive Power Stage | Solar String Inverter |
|---|---|
Use Scenario: Controlling 3-phase IGBT/MOSFET gate drivers in HVAC compressor drives or servo amplifiers. IC Role / Device Role / Timing Role: Real-time PWM generation, current/voltage sensing, and protection logic execution at 20–100 kHz switching frequencies. Use Value: HRPWM dual-edge modulation enables <100-ps resolution for precise dead-time control and reduced THD in output waveforms. | Use Scenario: Managing MPPT tracking and grid-synchronization in residential solar string inverters. IC Role / Device Role / Timing Role: Simultaneous ADC sampling of DC input and AC output, CLA-accelerated PI control, and isolated gate driver timing coordination. Use Value: 4.6 MSPS ADC with dual sample-and-hold captures synchronized voltage/current pairs within one PWM period for accurate power calculation. |
| EV On-Board Charger (OBC) | Industrial UPS Power Module |
Use Scenario: Regulating bi-directional AC/DC and DC/DC stages in vehicle-mounted charging systems. IC Role / Device Role / Timing Role: Coordinating interleaved PFC and LLC resonant converter control with fast transient response to grid disturbances. Use Value: CLA handles inner-loop current regulation while CPU manages communication, thermal monitoring, and safety state machines-enabling ASIL-B compliance. | Use Scenario: Providing seamless transfer and sine-wave synthesis in three-phase uninterruptible power supplies. IC Role / Device Role / Timing Role: Generating synchronized 50/60 Hz SPWM outputs with adaptive harmonic cancellation and battery charge/discharge management. Use Value: eQEP and HRCAP interfaces directly accept resolver or encoder feedback for closed-loop speed regulation with <0.1% speed error at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar real-time control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28035PNT | 64 KB Flash, 10 KB SARAM, same CLA, identical peripheral set and pinout | Higher firmware storage capacity for complex communication stacks or dual-application firmware images | Select when >32 KB Flash is required for bootloader + application + safety-certified library space |
| TMS320F28034PNT | No CLA, 32 KB Flash, 10 KB SARAM, same ADC/ePWM/peripheral count | Lacks hardware-accelerated control loop execution; relies solely on C28x CPU for all real-time tasks | Select when cost sensitivity outweighs need for deterministic sub-microsecond loop times in high-bandwidth control |
Compared with TMS320F28034PNT, the TMS320F28033PNT delivers hardware-accelerated control law execution via CLA-reducing CPU loading and enabling higher sampling rates. Against TMS320F28035PNT, it trades 32 KB Flash capacity for identical real-time performance and lower BOM cost in resource-constrained designs.
Availability
TMS320F28033PNT is available at Aetrix Electronics and suitable for solar power optimizers, EV charging station power modules, and industrial AC-DC converters requiring stable component supply across extended production lifecycles.
Supply support for TMS320F28033PNT 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 company specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of industrial control IC leadership.
The TMS320F2803x family delivers entry-level real-time control MCUs optimized for cost-sensitive motor drive, digital power, and energy conversion applications-balancing performance, analog integration, and software compatibility with legacy C28x code.
FAQ
What is the maximum operating frequency of the TMS320F28033PNT?
The TMS320F28033PNT operates at a maximum CPU clock frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This frequency is generated internally via a PLL from an external crystal (X1/X2) or oscillator input (XCLKIN), and is confirmed in the device's recommended operating conditions table and functional specifications. The TMS320F28033PNT maintains full peripheral functionality-including ADC, ePWM, and CLA-at this rated speed.
Does the TMS320F28033PNT include a hardware math accelerator?
Yes, the TMS320F28033PNT integrates a programmable Control Law Accelerator (CLA)-a 32-bit floating-point co-processor that executes control algorithms independently of the main C28x CPU. The CLA has its own program and data memory, supports standard C language, and accesses shared peripherals like ADC and ePWM through dedicated memory-mapped registers. This capability is explicitly documented in the TMS320F28033PNT datasheet Feature List and Functional Block Diagram.
What package type and pin count does the TMS320F28033PNT use?
The TMS320F28033PNT uses an 80-pin Low-Profile Quad Flatpack (LQFP) package with a 12.0 mm × 12.0 mm body size and exposed thermal pad. This is confirmed in the Device Information table and Mechanical, Packaging, and Orderable Information section of the official datasheet. The "PNT" suffix specifically denotes the PN (LQFP-80) variant, distinct from PAG (TQFP-64) and RSH (VQFN-56) variants in the F2803x family.
How many high-resolution PWM (HRPWM) channels does the TMS320F28033PNT support?
The TMS320F28033PNT supports 7 high-resolution PWM (HRPWM) channels, as specified in Table 4-1 (Device Comparison) of the datasheet. These HRPWM outputs provide sub-nanosecond timing resolution and dual-edge control for advanced modulation schemes such as phase-shifted full-bridge or resonant LLC control. Each HRPWM channel is paired with a standard ePWM module and shares its time-base counter.
Is the TMS320F28033PNT pin-compatible with other devices in the F2803x family?
Within the same package type, the TMS320F28033PNT is pin-compatible with TMS320F28030PNT, TMS320F28031PNT, TMS320F28032PNT, TMS320F28034PNT, and TMS320F28035PNT in the LQFP-80 (PN) footprint. This compatibility is verified in the Pin Configuration and Functions section and Device Comparison table, which confirm identical pin numbering, signal assignments, and electrical characteristics across all PN-package F2803x variants.
TMS320F28033PNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 60MHz
- Connectivity:
- CANbus, I2C, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 45
- Program Memory Size:
- 64KB (32K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 10K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 1.995V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28033PNT FAQ
1.How can I place an order for TMS320F28033PNT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28033PNT 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 TMS320F28033PNT reliable?
The price and inventory of TMS320F28033PNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28033PNT is usually 5 days.
3.What payment methods are accepted for TMS320F28033PNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28033PNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28033PNT?
TMS320F28033PNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28033PNT 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 TMS320F28033PNT?
For technical support, including TMS320F28033PNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28033PNT requirements.
6.How does Aetrix verify that TMS320F28033PNT is sourced from the original manufacturer or authorized distributors?
All TMS320F28033PNT 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 TMS320F28033PNT meets industry standards.
7.What is the process for return or replacement of TMS320F28033PNT?
All TMS320F28033PNT units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28033PNT, 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 TMS320F28033PNT part is unused and in its original packaging.
Return procedure for TMS320F28033PNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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