Texas Instruments TMS320F28031PAGT

Overview

TMS320F28031PAGT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated control peripherals, designed for digital power and motor control systems. It features 32KB on-chip Flash, 6KB SARAM, 12-bit ADC (4.6 MSPS), 12 ePWM channels, 1 eCAP, 1 eQEP, eCAN, LIN, I²C, two SPI, and one SCI. It operates from a single 3.3V supply and supports –40°C to 105°C industrial temperature range.

For engineers reviewing the TMS320F28031PAGT datasheet, TMS320F28031PAGT pinout, TMS320F28031PAGT application, or TMS320F28031PAGT equivalent, key selection criteria include PWM resolution for inverter gate drive, ADC sampling rate for current-loop closure, CLA absence versus F28033/F28035, and TQFP-64 package compatibility with space-constrained power modules.

Technical Context

The TMS320F28031PAGT implements a Harvard-architecture 32-bit C28x CPU executing at 60 MHz (16.67 ns cycle time) with atomic operations and fast interrupt response. Its peripheral set includes dual-edge HRPWM outputs synchronized via EPWMSYNCI/EPWMSYNCO, comparator-routed PWM trip zones (TZ1–TZ3), and ADC with 16 input channels and 216.67 ns conversion time.

It lacks the Control Law Accelerator (CLA) present in F28033/F28035, and uses a unified memory model with boot ROM (8K × 16), OTP (1K × 16), and code-security module with 128-bit key. Clocking relies on internal zero-pin oscillators or external crystal/XCLKIN, with watchdog and missing-clock detection.

Key Specifications

Pinout & Package

64-pin Thin Quad Flatpack (TQFP), body size 10.0 mm × 10.0 mm, lead pitch 0.5 mm, exposed thermal pad. Pin 1 marked by dot; pin numbering follows standard counter-clockwise convention from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28032PAGT, the TMS320F28031PAGT offers more ePWM and ADC resources; compared with TMS320F28033PAGT, it omits the CLA but maintains identical package, pinout, and software compatibility-ideal for cost-sensitive industrial designs where CPU-only execution suffices.

Availability

TMS320F28031PAGT is available at Aetrix Electronics and suitable for digital power conversion, motor drive control, and EV on-board charger applications requiring stable component supply and long-term industrial lifecycle support.

Supply support for TMS320F28031PAGT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, and personal electronics markets.

The TMS320F2803x family targets real-time control applications including motor drives, solar inverters, digital power supplies, and EV charging systems-emphasizing integration, code compatibility, and analog-peripheral density in low-pin-count packages.

FAQ

What is the maximum operating frequency of the TMS320F28031PAGT?

The TMS320F28031PAGT 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 either an external crystal (X1/X2) or external clock source applied to XCLKIN. The device supports multiple clock dividers and low-power modes while maintaining real-time determinism for control loops.

Does the TMS320F28031PAGT include a Control Law Accelerator (CLA)?

No, the TMS320F28031PAGT does not include a Control Law Accelerator. The CLA is present only in the TMS320F28033PAGT and TMS320F28035PAGT variants within the F2803x family. The TMS320F28031PAGT relies solely on its C28x CPU for control law execution, which remains fully capable for standard PI/PID-based motor and power control applications.

What ADC resolution and sampling rate does the TMS320F28031PAGT support?

The TMS320F28031PAGT integrates a 12-bit analog-to-digital converter with a maximum sampling rate of 4.6 MSPS and a minimum conversion time of 216.67 ns. It supports up to 16 input channels (ADCINA0–ADCINA7 and ADCINB0–ADCINB7), with dual sample-and-hold capability enabling simultaneous sampling across two groups for multi-phase current measurement.

Which communication interfaces are available on the TMS320F28031PAGT?

The TMS320F28031PAGT provides one SCI (UART-compatible), two SPI modules, one I²C module, one LIN module, and one enhanced CAN (eCAN) module. These interfaces support diagnostics, host communication, sensor interfacing, and automotive network connectivity-enabling integration into industrial automation, EV charging, and smart energy systems without external protocol translators.

Is the TMS320F28031PAGT pin-compatible with other F2803x devices in the same package?

Yes, the TMS320F28031PAGT is pin-compatible with all other F2803x devices offered in the 64-pin TQFP (PAG) package-including TMS320F28030PAGT, TMS320F28032PAGT, TMS320F28033PAGT, and TMS320F28035PAGT. Peripheral pin assignments and electrical characteristics are identical; functional differences (e.g., CLA presence, Flash size, ePWM count) are implemented internally and do not affect board layout or signal routing.