Texas Instruments TMS320F28054PNT

Overview

TMS320F28054PNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated CLA accelerator, 14-channel ePWM, 12-bit 3.75-MSPS ADC, and analog front-end including 7 comparators, 4 PGAs, and 3 DACs-designed for closed-loop motor control in AC drives and BLDC inverters.

For engineers reviewing the TMS320F28054PNT datasheet, TMS320F28054PNT pinout, TMS320F28054PNT application, or TMS320F28054PNT equivalent, key selection criteria include its 80-pin LQFP package, dual-zone security, single 3.3-V supply operation, and integrated analog signal conditioning for sensorless FOC implementations.

Technical Context

The TMS320F28054PNT implements a Harvard-architecture 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 clock system includes two zero-pin oscillators and supports external crystal or clock input with missing-clock detection.

Peripheral integration centers on real-time control: 14 ePWM channels with trip-zone protection, one eQEP module, one eCAP input, and an analog subsystem featuring dual-sample-and-hold ADC, programmable gain amplifiers (gain ≈ 3/6/11), and comparator outputs routable directly to PWM triggers-enabling hardware-accelerated current/voltage loop closure without CPU intervention.

Key Specifications

Pinout & Package

Package: 80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, 0.5-mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28055PNT, the TMS320F28054PNT omits the CLA but retains full analog front-end capability and 64 KB Flash-making it optimal for fixed-point FOC with tight BOM constraints. Against TMS320F28052PNT, it delivers higher ADC throughput and additional PGAs for precision current sensing in demanding industrial drives.

Availability

TMS320F28054PNT is available at Aetrix Electronics and suitable for industrial motor drives, HVAC compressor modules, and battery-powered BLDC systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for TMS320F28054PNT 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 specializing in analog, embedded processing, and connectivity technologies with leadership in industrial and automotive control solutions.

The TMS320F28054PNT belongs to TI's C2000™ real-time control MCU product line, engineered specifically for high-precision, low-latency closed-loop control in motor drives, digital power, and energy conversion systems.

FAQ

What is the maximum operating frequency of the TMS320F28054PNT?

The TMS320F28054PNT operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This timing is achieved using the internal zero-pin oscillators or an external clock source, and is fully supported across its specified temperature range of –40°C to 105°C. The TMS320F28054PNT maintains deterministic real-time performance at this speed for control-law execution and peripheral synchronization.

Does the TMS320F28054PNT include a hardware math accelerator?

No, the TMS320F28054PNT does not include the Programmable Control Law Accelerator (CLA). Unlike the TMS320F28055PNT, which integrates a 32-bit floating-point CLA, the TMS320F28054PNT relies solely on its C28x CPU for control law computation. However, the TMS320F28054PNT retains identical peripheral sets-including ePWM, ADC, comparators, and PGAs-making it ideal for fixed-point FOC implementations where CLA offload is unnecessary.

What analog peripherals are integrated into the TMS320F28054PNT?

The TMS320F28054PNT integrates a comprehensive analog front end: a 12-bit 3.75-MSPS ADC with dual sample-and-hold, 7 comparators (3 with integrated DAC references), 1 buffered reference DAC (VREFOUT), 4 programmable gain amplifiers (PGAs) with gains ≈3/6/11, and 4 digital filters. These resources enable direct analog signal conditioning for shunt-based current sensing and hardware-triggered PWM modulation-reducing external component count in motor control designs.

What is the package type and pin count of the TMS320F28054PNT?

The TMS320F28054PNT uses an 80-pin Low-Profile Quad Flatpack (LQFP) package with a 12.0 mm × 12.0 mm body size and 0.5-mm lead pitch. This package is pin-compatible across the F2805x family, including TMS320F28055PNT and TMS320F28052PNT, enabling scalable design reuse. The 42 multiplexed GPIO pins support all major peripherals including ePWM, eCAP, eQEP, SCI/UART, SPI, I²C, and eCAN.

How does the TMS320F28054PNT handle power supply requirements?

The TMS320F28054PNT operates from a single 3.3-V supply (VDDIO) with no power sequencing requirement. An internal 1.8-V voltage regulator (VREG) is enabled via the VREGENZ pin and powers the CPU core and logic; analog sections (VDDA/VSSA) require separate decoupling. When VREG is active, external 1.2-μF capacitors per VDD pin and a 2.2-μF capacitor on VDDA are mandatory for stable operation across its full temperature range.