Texas Instruments TMS320F28033PAGS

Overview

TMS320F28033PAGS from Texas Instruments is a 64-pin TQFP C2000™ real-time microcontroller featuring a 60MHz C28x CPU, integrated Control Law Accelerator (CLA), 32KB on-chip Flash, 10KB SARAM, and dual 12-bit ADCs with 4.6 MSPS sampling rate. It delivers high-resolution PWM control, eCAN, LIN, SPI, I²C, and UART interfaces for closed-loop motor and power conversion systems.

For engineers reviewing the TMS320F28033PAGS datasheet, TMS320F28033PAGS pinout, TMS320F28033PAGS application, or TMS320F28033PAGS equivalent, key selection criteria include CLA acceleration capability, 64-pin TQFP package compatibility, –40°C to 125°C extended temperature operation, and support for HRPWM, eCAP, and analog comparator routing to PWM outputs.

Technical Context

The TMS320F28033PAGS implements a Harvard-architecture 32-bit C28x CPU with atomic instructions and fast interrupt response, paired with a dedicated 32-bit floating-point CLA that executes control law code independently of the main CPU. Its memory subsystem includes 32KB Flash (secure), 10KB SARAM (CLA-accessible), 8KB Boot ROM, and 1KB OTP.

Peripheral integration centers on real-time control: 14 ePWM channels (7 with high-resolution extension), 1 eQEP, 1 eCAP, 2 HRCAP modules, 32-channel 12-bit ADC with dual sample-and-hold, 3 analog comparators with internal DACs, and serial interfaces including eCAN, LIN, two SPIs, one I²C, and one SCI (UART).

Key Specifications

Pinout & Package

64-pin PAG TQFP package (10.0 mm × 10.0 mm), RoHS-compliant, with exposed thermal pad. Pin 15 is VREFHI/ADCINA0 (mutually exclusive), Pin 17 is VSSA/VREFLO (internally tied). JTAG interface uses GPIO35–GPIO38 as TDI/TDO/TMS/TCK.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28033PAGS, the TMS320F28035PAGS offers double Flash capacity for larger control firmware, while the TMS320F28033PN provides 16 extra GPIOs and full 16-channel ADC support-both retain identical CLA, HRPWM, and analog comparator functionality but differ in memory density and I/O scalability.

Availability

TMS320F28033PAGS is available at Aetrix Electronics and suitable for industrial motor drives, solar power optimizers, and EV charging station power modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TMS320F28033PAGS 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 targets cost-sensitive, high-performance real-time control applications-including motor drives, digital power supplies, and renewable energy systems-by integrating the C28x CPU, CLA, and precision analog peripherals in low-pin-count packages.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320F28033PAGS?

The TMS320F28033PAGS operates at a maximum CPU frequency of 60 MHz, delivering a 16.67 ns instruction cycle time. This timing is achieved using the on-chip PLL with an external crystal or clock source applied to X1/X2 pins. The device maintains this performance across its full –40°C to +125°C operating range, with thermal derating not required up to the rated junction temperature.

Does the TMS320F28033PAGS include a Control Law Accelerator (CLA), and what functions does it support?

Yes, the TMS320F28033PAGS includes a dedicated 32-bit floating-point Control Law Accelerator (CLA) that runs independently of the main C28x CPU. It supports real-time execution of control-intensive tasks such as field-oriented control (FOC), PID loops, and observer algorithms-reducing CPU load and enabling deterministic sub-microsecond response times for critical timing paths.

How many analog-to-digital converter (ADC) channels and what sampling rate does the TMS320F28033PAGS provide?

The TMS320F28033PAGS integrates a 12-bit ADC with 16 input channels and a maximum sampling rate of 4.6 MSPS. It features dual sample-and-hold circuits for simultaneous sampling, and supports ratio-metric reference operation using VREFHI/VREFLO. All 16 channels are accessible on the 64-pin PAG package, with ADCINA0–ADCINA7 and ADCINB0–ADCINB7 mapped to dedicated analog input pins.

What is the Flash memory size and security capability of the TMS320F28033PAGS?

The TMS320F28033PAGS contains 32KB × 16-bit on-chip Flash memory with full code-security support, including 128-bit encryption keys, lock bits, and secure memory block protection. This prevents unauthorized read-out, firmware cloning, or modification-ensuring intellectual property protection and safe boot integrity for industrial and automotive deployments.

Which communication interfaces are integrated into the TMS320F28033PAGS?

The TMS320F28033PAGS integrates one enhanced CAN (eCAN), one LIN, two SPI, one I²C, and one SCI (UART-compatible) module. These interfaces support robust industrial networking: eCAN for motor drive coordination, LIN for auxiliary subsystems, SPI/I²C for sensor and PMIC communication, and SCI for debugging or host MCU interaction-all accessible through multiplexed GPIO pins on the 64-pin TQFP package.