Texas Instruments TMS320F28065PZT

Overview

TMS320F28065PZT from Texas Instruments is a 90-MHz C28x-core 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. It targets high-precision closed-loop control in industrial inverters, EV charging power modules, and servo drive control.

For engineers reviewing the TMS320F28065PZT datasheet, TMS320F28065PZT pinout, TMS320F28065PZT application, or TMS320F28065PZT equivalent, key selection criteria include HRPWM dual-edge modulation capability, on-chip VCU for CRC/Viterbi acceleration, 128KB flash + 50KB RAM memory configuration, and support for InstaSPIN-FOC™ firmware deployment in sensorless motor control systems.

Technical Context

The TMS320F28065PZT implements a Harvard architecture C28x CPU core with atomic instruction execution and unified memory mapping, enabling deterministic real-time response. Its CLA operates independently of the main CPU to offload floating-point intensive control law computations such as field-oriented control (FOC) loops.

Peripheral integration includes dual-sample-and-hold ADC with ratio-metric VREFHI/VREFLO referencing, analog comparators with internal 10-bit references routed directly to ePWM trip zones, and enhanced ePWM modules supporting frequency-modulated dual-edge control for high-resolution timing in digital power applications.

Key Specifications

Pinout & Package

The TMS320F28065PZT uses a 100-pin Low-Profile Quad Flatpack (LQFP) package designated PZ, with 14.0 mm × 14.0 mm body size and exposed thermal pad (non-electrical ground connection). Pin assignments follow TI's standard C2000 pinout layout for 100-pin variants, supporting full peripheral multiplexing including GPIO, analog inputs, PWM outputs, capture inputs, encoder interfaces, and serial communication signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28069PZT and TMS320F280049CPZT, the TMS320F28065PZT provides identical CPU/CLA/HRPWM performance and pin compatibility within the F2806x family but omits VCU and USB-making it optimal for cost-sensitive, non-communication-intensive motor control where legacy firmware compatibility is critical.

Availability

TMS320F28065PZT is available at Aetrix Electronics and suitable for industrial inverter control, EV charging power modules, and servo drive control applications requiring stable component supply, long-term manufacturability, and TI-qualified automotive-grade temperature range support.

Supply support for TMS320F28065PZT 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 TMS320F28065PZT belongs to TI's C2000™ real-time microcontroller product line, engineered specifically for deterministic closed-loop control in power electronics, motor drives, and digital power systems where timing precision, analog integration, and computational efficiency are critical.

FAQ

What is the maximum operating frequency of the TMS320F28065PZT?

The TMS320F28065PZT operates at a maximum CPU frequency of 90 MHz, corresponding to an instruction cycle time of 11.11 ns. This speed is achieved using an internal PLL with external crystal or oscillator input, and is fully supported across its specified temperature range of –40°C to 105°C. The TMS320F28065PZT maintains deterministic real-time performance at this clock rate for control-law execution, ADC sampling, and PWM generation.

Does the TMS320F28065PZT include a floating-point unit (FPU)?

Yes, the TMS320F28065PZT integrates a native single-precision floating-point unit (FPU) alongside its C28x CPU core. This enables efficient execution of floating-point arithmetic required for advanced motor control algorithms like field-oriented control (FOC) and sensorless estimation without software emulation overhead. The FPU is fully IEEE 754-compliant and accessible via standard C compiler intrinsics and assembly instructions.

What peripherals are included in the TMS320F28065PZT for motor control applications?

The TMS320F28065PZT includes eight enhanced PWM (ePWM) modules (16 total outputs, 8 HRPWM-capable), three enhanced capture (eCAP) modules, four high-resolution capture (HRCAP) modules, two enhanced quadrature encoder pulse (eQEP) modules, a 12-bit 3.46-MSPS ADC with dual sample-and-hold, and three analog comparators with integrated DACs. These peripherals enable precise timing, position feedback, current/voltage sensing, and fast overcurrent protection essential for servo, BLDC, and PMSM motor control.

Is the TMS320F28065PZT pin-compatible with other F2806x family members?

Yes, the TMS320F28065PZT shares the same 100-pin LQFP (PZ) package footprint and pinout as other 100-pin F2806x devices including TMS320F28069PZT and TMS320F28067PZT. This allows direct PCB reuse across variants differing in flash size, peripheral enablement (e.g., USB, VCU), or temperature grade-provided design constraints accommodate functional differences in firmware and hardware initialization.

What security features does the TMS320F28065PZT provide for firmware protection?

The TMS320F28065PZT includes a Code Security Module (CSM) with 128-bit password protection for on-chip flash, SARAM, and OTP memory blocks. It also integrates 1KB of one-time programmable (OTP) ROM for secure boot keys and calibration data. These features prevent unauthorized read-out, reverse engineering, and firmware tampering-critical for protecting proprietary control algorithms and meeting industrial cybersecurity requirements.