Texas Instruments TMS320F28069PZT

Overview

TMS320F28069PZT 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 and EV charging modules.

For engineers reviewing the TMS320F28069PZT datasheet, TMS320F28069PZT pinout, TMS320F28069PZT application, or TMS320F28069PZT equivalent, key selection factors include ePWM resolution (HRPWM-capable), on-chip security (128-bit key), dual-sample-and-hold ADC architecture, and LQFP-100 thermal performance at –40°C to 105°C.

Technical Context

The TMS320F28069PZT implements a Harvard-architecture C28x CPU with atomic instruction execution and unified memory mapping, paired with a dedicated 32-bit floating-point CLA that offloads real-time control loops independently of the main core. Its peripheral set includes eight ePWM modules (16 channels, 8 HRPWM-capable), three eCAP, four HRCAP, two eQEP, and a dual-S/H 12-bit ADC with 16-channel input muxing and SOC-triggered DMA access.

System-level timing is managed by dual zero-pin oscillators, PLL-based clock synthesis, and three independent 32-bit CPU timers, while safety-critical operation is supported by trip-zone inputs, watchdog timer, and hardware-enforced code security via CSM and OTP ROM.

Key Specifications

Pinout & Package

Package: LQFP-100 (14.0 mm × 14.0 mm), thermally enhanced with exposed PowerPAD™ ground pad requiring PCB thermal vias and soldered GND plane connection per TI SLMA002B guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F280049C and TMS320F28379D, the TMS320F28069PZT offers optimal balance of HRPWM precision, integrated USB/CAN, and LQFP-100 footprint for cost-sensitive industrial inverters - delivering full motor control capability without over-specifying core count or memory.

Availability

TMS320F28069PZT is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, and EV on-board chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized TI distribution channels.

Supply support for TMS320F28069PZT 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, specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in industrial and automotive electronics.

The TMS320F28069PZT belongs to TI's C2000™ real-time MCU product line, engineered specifically for deterministic closed-loop control in power electronics - emphasizing high-resolution PWM, fast analog acquisition, and hardware-accelerated math for motor and digital power applications.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320F28069PZT?

The TMS320F28069PZT 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 industrial temperature range (–40°C to 105°C) and enables sub-microsecond execution of critical control loops in motor and power conversion applications. The TMS320F28069PZT achieves this performance using a pipelined C28x core with Harvard bus architecture and zero-wait-state memory access.

Does the TMS320F28069PZT support hardware-accelerated motor control algorithms?

Yes, the TMS320F28069PZT integrates both a Floating-Point Unit (FPU) and a Programmable Control Law Accelerator (CLA). The CLA is a fully independent 32-bit floating-point processor that executes control law code-such as Park/Clarke transforms or PI regulators-in parallel with the main C28x CPU. This hardware acceleration reduces CPU loading by up to 40% in typical FOC implementations and ensures deterministic timing for time-critical loops. The TMS320F28069PZT does not require external co-processors for real-time motor control.

What ADC configuration options does the TMS320F28069PZT provide for current sensing?

The TMS320F28069PZT features a 12-bit dual sample-and-hold ADC capable of 3.46 MSPS throughput with 16 input channels. For current sensing, it supports simultaneous sampling of up to two shunt or isolated amplifier outputs via its dual S/H architecture, enabling precise phase-current reconstruction in 3-phase systems. It also provides ratio-metric reference support (VREFHI/VREFLO) and SOC-triggered DMA transfers - allowing the TMS320F28069PZT to capture current samples synchronized precisely with PWM edges for minimal latency and distortion.

How is functional safety addressed in the TMS320F28069PZT?

The TMS320F28069PZT incorporates multiple hardware safety mechanisms: three dedicated trip-zone (TZ) inputs that force immediate PWM shutdown within <100 ns of fault detection; analog comparators with internal 10-bit references directly linked to TZ outputs; watchdog timer with missing-clock detection; and hardware-enforced code security via 128-bit CSM key and OTP ROM locking. While the TMS320F28069PZT itself is not ISO 26262 ASIL-certified, these features form the foundation for building IEC 61508 SIL2-compliant motor control systems when implemented per TI's functional safety manuals.

What communication interfaces are integrated into the TMS320F28069PZT?

The TMS320F28069PZT integrates six serial interfaces: two SCI/UART modules, two SPI modules, one I²C bus, one McBSP, one eCAN controller (32-message mailbox), and one full-speed USB 2.0 port with integrated PHY. All interfaces support DMA access and share common peripheral buses for low-latency data transfer. The eCAN module complies with ISO 11898-1 and supports bit rates up to 1 Mbps, while the USB interface enables firmware updates and real-time debug without external transceivers - a capability confirmed in the TMS320F28069PZT device comparison table and functional block diagram.