Texas Instruments TMS320F28069PNT

Overview

TMS320F28069PNT from Texas Instruments is a 90-MHz C28x-core real-time microcontroller with integrated FPU, CLA, and 12-bit 3.46-MSPS ADC, designed for closed-loop motor control and digital power conversion in industrial inverters, EV charging modules, and solar PCS systems.

For engineers reviewing the TMS320F28069PNT datasheet, TMS320F28069PNT pinout, TMS320F28069PNT application, or TMS320F28069PNT equivalent, key selection factors include its 16-channel ePWM with 8 HRPWM channels, dual-sample-and-hold ADC architecture, on-chip temperature sensor, 128KB flash/50KB RAM memory map, and support for InstaSPIN-FOC™ firmware acceleration.

Technical Context

The TMS320F28069PNT implements a Harvard bus architecture with atomic instruction execution and unified memory programming, enabling deterministic real-time response. Its dual-core execution model pairs the 90-MHz C28x CPU with an independent 32-bit floating-point CLA for parallel control law computation.

Peripheral integration includes 8 ePWM modules (16 total outputs), 3 eCAP, 4 HRCAP, 2 eQEP, and a 12-bit dual-S/H ADC with 16 input channels and ratio-metric reference support - all accessible via DMA and synchronized to PWM events for precise timing-critical sampling.

Key Specifications

Pinout & Package

The TMS320F28069PNT uses an 80-pin Low-Profile Quad Flatpack (LQFP, PN package) with exposed thermal pad (non-electrical ground connection). Pin assignments follow TI's standardized C2000 GPIO multiplexing scheme, supporting up to 54 programmable I/Os with input filtering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28069M and TMS320F280049C, the TMS320F28069PNT delivers optimal cost-performance balance for established industrial inverter platforms, retaining full code compatibility while offering mature toolchain support and broad third-party motor control library availability.

Availability

TMS320F28069PNT is available at Aetrix Electronics and suitable for industrial motor drives, solar power optimizers, and EV charging station power modules requiring stable component supply and long-term production continuity.

Supply support for TMS320F28069PNT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TMS320F28069PNT belongs to TI's C2000™ real-time MCU product line, engineered specifically for deterministic control in power electronics - emphasizing high-resolution PWM, fast analog acquisition, and hardware-accelerated math for motor and energy conversion systems.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320F28069PNT?

The TMS320F28069PNT operates at a maximum CPU frequency of 90 MHz, delivering an instruction cycle time of 11.11 ns. This timing is guaranteed across the full –40°C to 105°C temperature range and 3.3-V supply, enabling deterministic execution of control loops with sub-microsecond jitter - essential for high-bandwidth current regulation in SiC-based inverters.

Does the TMS320F28069PNT include hardware acceleration for motor control algorithms?

Yes, the TMS320F28069PNT integrates both a Floating-Point Unit (FPU) and a Programmable Control Law Accelerator (CLA). The CLA executes control code independently of the main C28x CPU, allowing simultaneous background computation of FOC, observers, or PID regulators - reducing main CPU load and improving real-time responsiveness without software overhead.

How many PWM outputs does the TMS320F28069PNT support, and which ones offer high resolution?

The TMS320F28069PNT supports 16 total ePWM outputs across eight modules. Eight of these - EPWM1A/B through EPWM4A/B - are designated as HRPWM-capable, providing sub-nanosecond timing resolution for dual-edge modulation, critical for minimizing dead-time errors in high-frequency GaN/SiC gate drivers.

What analog peripherals are integrated into the TMS320F28069PNT?

The TMS320F28069PNT integrates a 12-bit, 3.46-MSPS ADC with dual sample-and-hold, 16 input channels, and ratio-metric VREFHI/VREFLO referencing. It also includes three analog comparators with integrated 10-bit DAC references, each directly routable to ePWM trip zones for hardware-fast overcurrent protection - eliminating software latency in fault response.

Is the TMS320F28069PNT pin-compatible with other devices in the F2806x family?

The TMS320F28069PNT shares the same 80-pin LQFP (PN) footprint with TMS320F28067, TMS320F28066, and TMS320F28065, enabling hardware reuse across performance tiers. However, peripheral enablement (e.g., CLA, VCU, USB) and memory size differ - requiring firmware validation when migrating, though core register maps and GPIO muxing remain consistent.