Texas Instruments TMS320F28031PNT

Overview

TMS320F28031PNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated ePWM, 12-bit ADC (4.6 MSPS), eCAN, LIN, and SPI peripherals, designed for digital power control and motor drive applications requiring deterministic low-latency response.

For engineers reviewing the TMS320F28031PNT datasheet, TMS320F28031PNT pinout, TMS320F28031PNT application, or TMS320F28031PNT equivalent, this page delivers verified package mapping (80-pin LQFP), confirmed peripheral count (12 ePWM channels, 14 ADC inputs), CLA absence, flash size (32 KB), and temperature grade (–40°C to 105°C) - all validated against TI SPRS584Q Rev. January 2024.

Technical Context

The TMS320F28031PNT implements a Harvard-architecture 32-bit C28x CPU executing at 60 MHz (16.67 ns cycle time) with unified memory model and atomic instruction support. It integrates a 12-bit ADC with dual sample-and-hold, 4.6 MSPS conversion rate, and 14 input channels mapped across two voltage ranges (VREFHI/VREFLO).

Peripheral control is managed via three 32-bit CPU timers, a PIE interrupt controller, and dedicated hardware modules including 12 ePWM channels (with HRPWM capability on 6), one eCAN module, one LIN module, two SPI interfaces, one I²C, and one SCI UART - all accessible through 45 multiplexed GPIO pins with programmable input filtering.

Key Specifications

Pinout & Package

80-pin Low-Profile Quad Flatpack (LQFP), body size 12.0 mm × 12.0 mm, 0.5 mm pitch, RoHS-compliant. Thermal pad exposed on underside for enhanced heat transfer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar real-time control applications.

Compared with TMS320F28032PNT, the TMS320F28031PNT offers higher PWM and ADC channel count for complex topologies; compared with TMS320F28034PNT, it lacks the CLA but reduces cost and power consumption in CPU-bound applications where deterministic latency is prioritized over computational offload.

Availability

TMS320F28031PNT is available at Aetrix Electronics and suitable for motor drive control, digital power conversion, and EV charging station applications requiring stable component supply and long-term industrial lifecycle support.

Supply support for TMS320F28031PNT 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 industrial and automotive electronics.

The TMS320F2803x family targets real-time control applications including motor drives, solar inverters, and digital power supplies, delivering optimized analog integration, deterministic timing, and code compatibility across generations.

FAQ

What is the maximum operating frequency of the TMS320F28031PNT?

The TMS320F28031PNT operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67 ns instruction cycle time. This frequency is achieved using the internal PLL with an external crystal or oscillator input, and is fully supported across the specified temperature range of –40°C to 105°C. All timing-critical peripherals-including ePWM, ADC, and eCAN-scale deterministically with this clock.

Does the TMS320F28031PNT include a Control Law Accelerator (CLA)?

No, the TMS320F28031PNT does not include a CLA. According to TI's device comparison table (SPRS584Q Table 4-1), CLA is present only in the TMS320F28033 and TMS320F28035 variants. The TMS320F28031PNT relies solely on its C28x CPU for control law execution, making it suitable for applications where CPU headroom is sufficient and deterministic single-core scheduling is preferred.

What package type and pin count does the TMS320F28031PNT use?

The TMS320F28031PNT uses an 80-pin Low-Profile Quad Flatpack (LQFP) package, designated by the suffix "PN". Its mechanical dimensions are 12.0 mm × 12.0 mm with 0.5 mm lead pitch. This package is explicitly listed in TI's orderable information and matches the pin diagram in Figure 5-3 of the SPRS584Q datasheet.

How many ADC channels and what resolution does the TMS320F28031PNT support?

The TMS320F28031PNT integrates a 12-bit analog-to-digital converter with 14 input channels (ADCINA0–ADCINA13), supporting both single-ended and pseudo-differential modes. It achieves 4.6 MSPS throughput with 216.67 ns conversion time and includes dual sample-and-hold circuitry - enabling simultaneous sampling of up to two signals for vector control applications.

Is the TMS320F28031PNT qualified for automotive applications?

No, the standard TMS320F28031PNT is not AEC-Q100 qualified. Automotive qualification is reserved for the TMS320F28031-Q1 variant, which undergoes additional stress testing and screening for operation from –40°C to 125°C. The TMS320F28031PNT is rated for industrial temperature range (–40°C to 105°C) and is intended for non-safety-critical automotive subsystems or industrial applications.