Texas Instruments TMS320F28044PZA

Overview

TMS320F28044PZA from Texas Instruments is a 100-MHz C28x digital signal processor with 64K × 16 flash, 10K × 16 SARAM, 12-bit 12.5-MSPS ADC (16 channels), 16 high-resolution PWM outputs (150-ps resolution), and integrated SPI/SCI/I²C peripherals. It serves as the real-time control core in industrial power conversion systems requiring deterministic timing and analog feedback.

For engineers reviewing the TMS320F28044PZA datasheet, TMS320F28044PZA pinout, TMS320F28044PZA application, or TMS320F28044PZA equivalent, key selection criteria include its 100-pin LQFP package, 1.8-V core / 3.3-V I/O supply architecture, on-chip code security module, and support for three external interrupts with PIE expansion-critical for motor drive and UPS firmware development.

Technical Context

The TMS320F28044PZA implements the TMS320C28x 32-bit CPU with single-cycle 32 × 32 MAC and dual 16 × 16 MAC capability, enabling fast control loop execution. Its memory subsystem includes 64K × 16 flash with code-security protection, 10K × 16 SARAM (L0/L1/M0/M1), 4K × 16 boot ROM, and 1K × 16 OTP.

Peripherals are tightly coupled to the CPU via a unified bus: the 12-bit ADC supports simultaneous sampling across two groups (A/B) with internal/external reference options; ePWM modules deliver 16 outputs with configurable trip zones and 150-ps resolution; and communication interfaces include SPI-A, SCI-A, and I²C-A-all operating at 3.3-V logic levels with TTL-compatible inputs.

Key Specifications

Pinout & Package

Package: 100-pin Low-Profile Quad Flatpack (LQFP), 14.0 mm × 14.0 mm body, 0.5-mm pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal processor applications.

Compared with TMS320F28034PNT, the TMS320F28044PZA delivers 67% higher CPU throughput and 3× faster ADC sampling-critical for high-frequency SiC-based power stages. Versus TMS320F28069MPZT, it trades FPU and memory headroom for proven stability, smaller footprint, and lower power in established industrial control firmware stacks.

Availability

TMS320F28044PZA is available at Aetrix Electronics and suitable for string inverter control, industrial AC-DC converter design, and three-phase UPS systems requiring stable component supply across long production lifecycles.

Supply support for TMS320F28044PZA 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 TMS320F28044PZA belongs to TI's C2000™ real-time microcontroller family, engineered specifically for digital power control, motor drive, and renewable energy applications demanding sub-microsecond timing precision and integrated analog signal chain.

FAQ

What is the maximum ADC sampling rate supported by the TMS320F28044PZA?

The TMS320F28044PZA supports a maximum ADC conversion rate of 12.5 million samples per second (MSPS), achieved with an 80-ns conversion time per sample. This performance applies to both Group A and Group B 12-bit ADC channels, and the device allows simultaneous sampling across both groups using ADCSOC triggers. The TMS320F28044PZA achieves this rate under recommended operating conditions with internal reference enabled and proper analog power sequencing.

Does the TMS320F28044PZA support floating-point arithmetic natively?

No, the TMS320F28044PZA does not include a hardware floating-point unit (FPU). It implements the fixed-point TMS320C28x CPU core and relies on TI's C28x IQ Math Library for efficient Q-format arithmetic. Developers use this library to perform motor control and power conversion calculations with predictable timing-critical for hard real-time loops. The TMS320F28044PZA is optimized for deterministic fixed-point execution rather than IEEE-754 floating-point operations.

What are the power supply requirements for the TMS320F28044PZA?

The TMS320F28044PZA requires two independent supply domains: a 1.8-V core supply (VDD) for the CPU and digital logic, and a 3.3-V I/O supply (VDDIO) for GPIO, peripherals, and ADC reference circuitry. Additionally, separate 1.8-V (VDD1A18/VDD2A18) and 3.3-V (VDDA2/VDDAIO) analog supplies are mandatory for the ADC subsystem to ensure specified SNR and linearity. All supplies must be properly decoupled per TI's layout guidelines in the SPRS357D datasheet.

Can the TMS320F28044PZA be used as a drop-in replacement for the TMS320F28034PNT?

No, the TMS320F28044PZA is not a drop-in replacement for the TMS320F28034PNT. Although both are 100-pin LQFP devices, their pinouts differ significantly-especially for ADC inputs, ePWM outputs, and peripheral signal mappings. For example, ADCINA0–7 occupy pins 16–23 on the TMS320F28044PZA but map to different locations on the F28034. PCB redesign and firmware adaptation are required to migrate from F28034 to TMS320F28044PZA.

How is code security implemented on the TMS320F28044PZA?

Code security on the TMS320F28044PZA is enforced by a dedicated hardware module that locks access to flash, SARAM, and OTP memory regions. Once enabled via the security password registers, unauthorized read/write/erase attempts to protected memory return dummy data or trigger reset. The TMS320F28044PZA supports full-memory or sector-level protection, and security status persists through power cycles. TI recommends using the Code Security Module to prevent firmware cloning in deployed industrial equipment.