Texas Instruments TMS320F28031RSHS

Overview

TMS320F28031RSHS 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 32 KB flash, 6 KB SARAM, 12-bit ADC (2 MSPS), 12 ePWM channels, 1 eCAP, 1 eQEP, eCAN, LIN, I²C, SPI, and SCI interfaces, and operates from –40°C to 125°C in a 56-pin VQFN package.

For engineers reviewing the TMS320F28031RSHS datasheet, TMS320F28031RSHS pinout, TMS320F28031RSHS application, or TMS320F28031RSHS equivalent, key selection criteria include its 60-MHz deterministic C28x CPU, on-chip analog integration (ADC, comparators, HRPWM), single 3.3-V supply operation, and automotive-grade temperature range - all critical for high-reliability closed-loop control in EV charging, solar inverters, and industrial drives.

Technical Context

The TMS320F28031RSHS implements a Harvard-architecture 32-bit C28x CPU executing at 60 MHz (16.67 ns cycle time) with atomic instructions and fast interrupt response. Its peripheral set includes dual-edge high-resolution PWM (HRPWM), 12-bit ADC with 2 MSPS sampling rate and 16 input channels, and three independent 32-bit CPU timers for precise timing coordination.

Control logic is enhanced by dedicated hardware modules: eCAP supports edge-triggered capture with timestamping; eQEP decodes quadrature encoder signals for position/speed feedback; and eCAN provides robust serial communication for distributed control networks. All peripherals are accessible via the PIE interrupt controller and share memory-mapped registers for deterministic real-time execution.

Key Specifications

Pinout & Package

56-pin Very Thin Quad Flatpack No-Lead (VQFN), 7.0 mm × 7.0 mm body size, 0.4 mm pitch, exposed thermal pad. Designed for automated assembly and thermal performance in high-power-density applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28032RSHS, the TMS320F28031RSHS offers greater ePWM channel count and HRCAP support for enhanced timing flexibility; compared with TMS320F28034RSHS, it trades flash/RAM capacity and ADC speed for lower cost and smaller code footprint in mid-tier digital power designs.

Availability

TMS320F28031RSHS is available at Aetrix Electronics and suitable for EV charging stations, solar power optimizers, and industrial AC-DC power supplies requiring stable component supply, long-term lifecycle support, and automotive-grade temperature resilience.

Supply support for TMS320F28031RSHS 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 decades of expertise in real-time control ICs.

The TMS320F2803x product line delivers entry-performance C2000™ MCUs optimized for cost-sensitive digital power, motor control, and industrial automation - emphasizing integration, thermal robustness, and deterministic execution.

FAQ

What is the maximum operating frequency of the TMS320F28031RSHS CPU core?

The TMS320F28031RSHS features a C28x 32-bit CPU core rated for 60 MHz operation, delivering a 16.67 ns instruction cycle time. This frequency is fully supported across the device's entire specified temperature range (–40°C to +125°C) and supply voltage (3.3 V ± 5%). The PLL and clock configuration allow stable operation without external frequency multipliers.

Does the TMS320F28031RSHS include a hardware floating-point unit (FPU)?

No, the TMS320F28031RSHS does not include a hardware floating-point unit. It uses a fixed-point C28x CPU core optimized for deterministic real-time control. Floating-point math must be implemented in software or offloaded using the optional Control Law Accelerator (CLA), which is not present in the TMS320F28031RSHS variant per the device comparison table.

How many ePWM channels does the TMS320F28031RSHS support, and what resolution is available?

The TMS320F28031RSHS supports 12 ePWM channels, each capable of standard 15-bit resolution and enhanced high-resolution mode (HRPWM) enabling sub-nanosecond duty-cycle adjustment. HRPWM is implemented in dedicated hardware and does not consume CPU cycles, making it ideal for SiC/GaN gate drive timing in high-frequency power converters.

Is the TMS320F28031RSHS pin-compatible with other devices in the F2803x family?

Yes, the TMS320F28031RSHS shares identical pinout and package (56-pin VQFN) with other RSH variants in the F2803x family, including TMS320F28030RSHS, TMS320F28032RSHS, TMS320F28033RSHS, TMS320F28034RSHS, and TMS320F28035RSHS. Peripheral availability differs per device, but PCB layout and signal routing remain interchangeable across this package option.

What communication interfaces are integrated into the TMS320F28031RSHS?

The TMS320F28031RSHS integrates one eCAN module (32-message mailbox), one LIN module, one I²C module, two SPI modules, and one SCI (UART-compatible) module. These interfaces support mixed-network communication in automotive and industrial systems - for example, eCAN for BMS coordination, LIN for auxiliary sensors, and SPI for isolated gate driver configuration.