Texas Instruments TMS320F28033RSHT

Overview

TMS320F28033RSHT 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), 14 ePWM channels (7 with high-resolution capability), and dual comparators with DACs - deployed in motor control, solar inverters, and EV charging power modules.

For engineers reviewing the TMS320F28033RSHT datasheet, TMS320F28033RSHT pinout, TMS320F28033RSHT application, or TMS320F28033RSHT equivalent, key selection criteria include CLA-enabled closed-loop timing, HRPWM dual-edge modulation support, analog integration (ADC + comparators + temperature sensor), and VQFN-56 packaging for compact power-conversion designs.

Technical Context

The TMS320F28033RSHT implements a Harvard-architecture C28x CPU with atomic instruction execution and zero-wait-state memory access, enabling deterministic interrupt latency under 100 ns. Its CLA operates independently of the main CPU, executing floating-point control loops using dedicated RAM and peripherals accessible via shared memory mapping.

Peripheral integration includes ePWM modules with TZ (trip-zone) protection, HRCAP for sub-nanosecond edge capture, and ADC with dual sample-and-hold supporting simultaneous sampling across up to 16 channels. All analog inputs are referenced to 3.3 V full-scale with ratio-metric VREFHI/VREFLO support.

Key Specifications

Pinout & Package

56-pin Very Thin Quad Flatpack No-Lead (VQFN) package, 7.0 mm × 7.0 mm body size, 0.4 mm pitch, exposed thermal pad. Pin 1 marked by top-side dot; pins arranged in four 14-pin sides.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28033RSHT, the TMS320F28035RSHT offers double Flash capacity for complex firmware and safe OTA updates, while the TMS320F28034RSHT removes the CLA to reduce unit cost - both retain identical VQFN-56 packaging and peripheral feature set for drop-in compatibility in existing layouts.

Availability

TMS320F28033RSHT is available at Aetrix Electronics and suitable for motor drive control, solar inverter power stage design, and EV on-board charger development requiring stable component supply and long-term industrial lifecycle support.

Supply support for TMS320F28033RSHT 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 silicon.

The TMS320F2803x family delivers entry-level C2000™ real-time MCUs optimized for cost-sensitive, high-efficiency power electronics - balancing CLA acceleration, analog integration, and compact packaging for motor and energy conversion systems.

FAQ

What is the maximum operating temperature rating for the TMS320F28033RSHT?

The TMS320F28033RSHT is rated for operation from –40°C to +125°C (S-grade), validated per JEDEC JESD22-A108. This extended temperature range supports deployment in under-hood automotive power modules, industrial motor drives, and outdoor solar inverters where ambient thermal stress exceeds commercial limits. The device's thermal resistance (θ_JA) is 42.5°C/W in the RSH package, enabling reliable operation at full load with standard PCB copper pour.

Does the TMS320F28033RSHT include a hardware security module?

Yes, the TMS320F28033RSHT integrates a Code Security Module with 128-bit encryption key storage and lock bits that prevent unauthorized readout of Flash, SARAM, and OTP memory. Once locked, memory contents cannot be accessed via JTAG or boot ROM - protecting proprietary control algorithms and calibration data. Security activation is irreversible and must be performed during final programming.

How many high-resolution PWM channels does the TMS320F28033RSHT support?

The TMS320F28033RSHT supports 7 high-resolution PWM (HRPWM) channels, derived from its 14 ePWM modules. Each HRPWM channel achieves <150 ps duty-cycle resolution using digital window comparators and enhanced counter modes - enabling precise dead-time control, frequency modulation, and sub-cycle current limiting in SiC and GaN-based power stages.

Is the TMS320F28033RSHT pin-compatible with other F2803x devices in the RSH package?

Yes, all F2803x variants in the RSH (VQFN-56) package - including TMS320F28030RSHT, TMS320F28031RSHT, TMS320F28032RSHT, TMS320F28033RSHT, TMS320F28034RSHT, and TMS320F28035RSHT - share identical pin assignments and electrical characteristics. This allows direct substitution within the same footprint for design flexibility, though peripheral enablement (e.g., CLA, Flash size) varies by part number.

What analog interfaces are integrated into the TMS320F28033RSHT?

The TMS320F28033RSHT integrates a 12-bit, 4.6 MSPS ADC with 16 input channels and dual sample-and-hold; three analog comparators each with a 10-bit DAC; an on-chip temperature sensor; and dedicated VREFHI/VREFLO reference pins. These resources support closed-loop current/voltage sensing, hardware-based fault detection, and self-calibration - eliminating need for external op-amps or reference ICs in most power-conversion designs.