Texas Instruments TMX320F28069PFPA

Overview

TMS320F28069PFPA from Texas Instruments is a 90-MHz C28x-based real-time microcontroller with integrated FPU, CLA, and advanced motor control peripherals including 16 ePWM channels (8 HRPWM-capable), 3 eCAP, 4 HRCAP, 2 eQEP, and a 12-bit 3.46-MSPS ADC - deployed in industrial inverters, servo drives, and solar power optimizers.

For engineers reviewing the TMS320F28069PFPA datasheet, TMS320F28069PFPA pinout, TMS320F28069PFPA application, or TMS320F28069PFPA equivalent, key selection criteria include CPU+FPU+CLA co-processing capability, dual-sample-and-hold ADC timing, HRPWM dual-edge modulation support, on-chip temperature sensing, and 54 GPIO with input filtering for closed-loop motor control systems.

Technical Context

The TMS320F28069PFPA implements a Harvard-architecture C28x CPU with atomic instruction execution and unified memory mapping, coupled to an independent 32-bit floating-point CLA for real-time control law offload. Its VCU extends instruction set for complex math, CRC, and Viterbi operations.

Peripheral integration includes a 12-bit dual-S/H ADC with ratio-metric reference support (VREFHI/VREFLO), analog comparators with internal 10-bit references routed directly to ePWM trip zones, and dual zero-pin oscillators with PLL-based clock synthesis - all operating from a single 3.3-V supply without sequencing requirements.

Key Specifications

Pinout & Package

80-pin PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP, PFP) with exposed thermal pad requiring PCB ground plane connection via thermal vias. Pin 19 supports either ADCINA0 or VREFHI (mutually exclusive); Pin 21 ties VREFLO to VSSA internally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F280049C, the TMS320F28069PFPA offers mature toolchain support and proven field reliability in industrial drives, while TMS320F28062F provides functional subset at lower price - neither is pin-compatible, requiring PCB redesign for migration.

Availability

TMS320F28069PFPA is available at Aetrix Electronics and suitable for industrial motor drives, solar power optimizers, and EV on-board chargers requiring stable component supply, long-term lifecycle management, and traceable sourcing.

Supply support for TMS320F28069PFPA 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 TMS320F28069PFPA belongs to TI's C2000™ real-time MCU product line, engineered specifically for deterministic closed-loop control in power electronics, motor drives, and digital power conversion systems.

FAQ

What is the maximum operating frequency of the TMS320F28069PFPA?

The TMS320F28069PFPA operates at a maximum CPU frequency of 90 MHz, corresponding to an 11.11-ns instruction cycle time. This speed is achieved using the on-chip PLL with either internal zero-pin oscillators or external crystal/clock input. All peripherals, including the 12-bit ADC and ePWM modules, are fully functional at this rate, and timing specifications in the datasheet assume operation at 90 MHz unless otherwise noted.

Does the TMS320F28069PFPA support USB functionality?

Yes, the TMS320F28069PFPA integrates a USB 2.0 controller supporting full-speed device mode (12 Mbps) and full-speed or low-speed host mode. It uses dedicated USB0DP and USB0DM pins requiring external series resistors and ESD protection diodes. The USB module is DMA-accessible and compatible with TI's C2000 USB stack for HID, CDC, and mass storage class implementations.

How many high-resolution PWM (HRPWM) channels does the TMS320F28069PFPA provide?

The TMS320F28069PFPA provides 8 high-resolution PWM channels, distributed across its 8 ePWM modules. Each HRPWM channel supports 150-ps resolution for fine dead-time control and frequency modulation - essential for resonant LLC converters and Class-D audio amplifiers. These channels are implemented in hardware and do not require software interpolation or additional timers.

What analog features are integrated into the TMS320F28069PFPA?

The TMS320F28069PFPA integrates a 12-bit, 3.46-MSPS ADC with dual sample-and-hold, 16 input channels, and ratio-metric reference support (VREFHI/VREFLO). It also includes three analog comparators with internal 10-bit DACs, on-chip temperature sensor, and dedicated analog supply (VDDA/VSSA) - all designed to enable self-contained analog signal acquisition and hardware-triggered protection in motor control applications.

Is the TMS320F28069PFPA pin-compatible with other F2806x family members?

No, the TMS320F28069PFPA is not pin-compatible with other F2806x variants such as TMS320F28069PZP (100-pin) or TMS320F28062F (80-pin LQFP). While it shares the 80-pin PFP footprint with TMS320F28062F, differences in peripheral allocation (e.g., USB, eCAN, HRCAP count) and pinmux assignments prevent direct substitution without layout revision and firmware adaptation.