Texas Instruments TMS320F28069FPNT

Overview

TMS320F28069FPNT from Texas Instruments is a 90-MHz C28x-based real-time microcontroller with integrated FPU, CLA, and VCU, designed for closed-loop motor control and digital power conversion. It delivers 11.11-ns instruction cycle time, 128KB flash, 50KB RAM, 16-channel 12-bit ADC at 3.46 MSPS, and 8 HRPWM-capable ePWM modules - deployed in solar inverters, EV charging stations, and servo drive control modules.

For engineers reviewing the TMS320F28069FPNT datasheet, TMS320F28069FPNT pinout, TMS320F28069FPNT application, or TMS320F28069FPNT equivalent, key selection criteria include its dual-core architecture (C28x + CLA), on-chip analog integration (comparators, DACs, temperature sensor), USB 2.0 support, and AEC-Q100 qualified variants for automotive-grade reliability.

Technical Context

The TMS320F28069FPNT implements a Harvard bus architecture with atomic operations and unified memory programming, enabling deterministic real-time execution. Its CLA executes floating-point math independently of the main CPU, while the VCU accelerates complex math, CRC, and Viterbi operations - critical for field-oriented control (FOC) algorithms.

Peripheral integration includes three eQEP modules, four HRCAP units, six-channel DMA, and dual-sample-and-hold ADC with ratio-metric reference support. Clocking uses two internal zero-pin oscillators plus external crystal input, with PLL-based frequency synthesis and missing-clock detection for robust system timing.

Key Specifications

Pinout & Package

The TMS320F28069FPNT is housed in an 80-pin Low-Profile Quad Flatpack (LQFP, PN package) with exposed thermal pad (PowerPAD™). The PowerPAD must be soldered to PCB ground plane via thermal vias for effective heat dissipation but is not electrically shorted to internal VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28069FPNT, the F280049C offers generational improvements in processing and analog capability but lacks USB; the F28069M provides turnkey motion control at the cost of flexibility and VCU acceleration for CRC/Viterbi workloads.

Availability

TMS320F28069FPNT is available at Aetrix Electronics and suitable for solar inverter control, EV charging station power modules, and industrial servo drive applications requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.

Supply support for TMS320F28069FPNT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.

The TMS320F28069FPNT belongs to TI's C2000™ real-time MCU product line, engineered specifically for deterministic control of power electronics, motor drives, and energy conversion systems - emphasizing low-latency signal processing, high-resolution timing, and integrated analog front-ends.

FAQ

What is the maximum operating frequency of the TMS320F28069FPNT?

The TMS320F28069FPNT operates at a maximum CPU frequency of 90 MHz, corresponding to an 11.11-ns instruction cycle time. This speed is achieved using the internal PLL with either the on-chip zero-pin oscillators or an external crystal (1–20 MHz) connected to X1/X2 pins. The device maintains timing integrity across its full –40°C to 105°C temperature range.

Does the TMS320F28069FPNT support USB functionality?

Yes, the TMS320F28069FPNT integrates a full-speed USB 2.0 PHY supporting both device and host modes. It uses dedicated USB0DP and USB0DM pins and requires an external 1.5-kΩ pull-up resistor on USB0DP for device enumeration. USB firmware stacks (e.g., TI's USB Stack v3.x) are supported in C2000Ware.

How many high-resolution PWM channels does the TMS320F28069FPNT provide?

The TMS320F28069FPNT provides 8 high-resolution PWM (HRPWM) channels, distributed across its 8 ePWM modules. Each HRPWM channel achieves <150-ps duty-cycle resolution, enabling precise dead-time insertion and multi-level inverter control - essential for SiC/GaN-based power stages in solar and EV applications.

What analog peripherals are integrated into the TMS320F28069FPNT?

The TMS320F28069FPNT integrates a 12-bit dual-sample-and-hold ADC (16 channels, 3.46 MSPS), 3 analog comparators with integrated 10-bit DACs, an on-chip temperature sensor, and ratio-metric VREFHI/VREFLO references. These enable hardware-accelerated overcurrent protection, thermal monitoring, and simultaneous current/voltage sampling in motor and power control.

Is the TMS320F28069FPNT pin-compatible with other F2806x family members?

The TMS320F28069FPNT in the 80-pin LQFP (PN) package shares identical pinout with TMS320F28069PN and TMS320F28069PFP (HTQFP), but differs from 100-pin variants (PZ/PZP). Functional compatibility exists across F2806x devices, though peripheral availability (e.g., USB, VCU, CLA) varies by suffix - always verify device-specific features in SPRS698J before substitution.