Texas Instruments TMS320F28068UPZT

Overview

TMS320F28068UPZT from Texas Instruments is a C2000™ real-time microcontroller designed for digital power conversion and motor control. It integrates a 90-MHz C28x CPU, 256 KB flash memory, 50 KB RAM, six ePWM modules with high-resolution extensions (HRPWM), two HRCAP modules, and dual 12-bit ADCs with 3.5-MSPS sampling rate. It operates across –40°C to 105°C and supports isolated gate-driver interfaces in AC/DC, DC/DC, and PMSM inverter systems.

For engineers reviewing the TMS320F28068UPZT datasheet, TMS320F28068UPZT pinout, TMS320F28068UPZT application, or TMS320F28068UPZT equivalent, key selection criteria include HRPWM resolution (150-ps step), dual independent ADCs with simultaneous sampling, ePWM trip-zone protection, on-chip VREG/BOR/POR, and boot ROM IQmath library support for fast control loop implementation.

Technical Context

The TMS320F28068UPZT implements a deterministic 32-bit C28x CPU core with IEEE-754 single-precision FPU and 200-MIPS peak performance. Its clocking architecture includes an internal oscillator, PLL with 1–15× multiplier, and multiple low-power modes (IDLE, STANDBY, HALT) controlled via SYSCLKOUT gating and LPMCR0 register.

Peripheral integration centers on real-time control: six ePWM modules each support dead-band generation, trip-zone inputs, and event-triggered ADC start; two HRCAP modules provide sub-nanosecond edge timing capture; and dual 12-bit ADCs feature hardware synchronization, 16-channel input multiplexing, and programmable sample-and-hold windows.

Key Specifications

Pinout & Package

Package: 100-pin Low-Profile Quad Flat Package (LQFP), body size 14 mm × 14 mm, 0.5-mm lead pitch, exposed thermal pad (PZT suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28068UPZT, the F28069MPZT adds computational headroom via CLA for advanced observers, while the F280039CPMQR trades HRCAP and ePWM count for CAN FD and higher clock speed-making the TMS320F28068UPZT optimal for cost-sensitive, high-precision PWM-focused applications like digital power and servo drives.

Availability

TMS320F28068UPZT is available at Aetrix Electronics and suitable for AC/DC server PSUs, industrial BLDC motor drives, solar microinverters, and uninterruptible power supplies requiring stable component supply and long-term industrial lifecycle support.

Supply support for TMS320F28068UPZT 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 communications markets.

The TMS320F28068UPZT belongs to TI's C2000™ real-time microcontroller product line, engineered specifically for closed-loop digital power and motor control applications demanding deterministic timing, high-resolution PWM, and integrated analog signal acquisition.

FAQ

What is the maximum operating frequency of the TMS320F28068UPZT CPU core?

The TMS320F28068UPZT features a C28x 32-bit CPU core rated for a maximum system clock frequency of 90 MHz. This corresponds to 200 MIPS peak performance with its integrated single-precision floating-point unit. The actual achievable frequency depends on configuration of the internal PLL and crystal oscillator source, and is validated across the full industrial temperature range (–40°C to +105°C). All timing-critical peripherals-including ePWM, HRCAP, and ADC-are fully synchronized to this clock domain in the TMS320F28068UPZT.

Does the TMS320F28068UPZT support hardware-based encryption or secure boot?

The TMS320F28068UPZT includes a Code Security Module (CSM) that provides 128-bit password-protected flash memory locking, preventing unauthorized read or write access to program memory. While it does not implement AES or SHA cryptographic accelerators, the CSM enforces secure boot by disabling JTAG debug access and blocking execution from unprotected memory regions. This mechanism is documented in Section 1.2 of the SPRUH18I Technical Reference Manual and is fully implemented in the TMS320F28068UPZT silicon.

How many high-resolution PWM channels does the TMS320F28068UPZT support?

The TMS320F28068UPZT integrates six ePWM modules, each enhanced with High-Resolution PWM (HRPWM) capability. Each ePWM module provides two complementary outputs (EPWMxA/EPWMxB), resulting in 12 total HRPWM-capable channels. These deliver 150-ps resolution through digital dithering and analog delay tuning, enabling sub-degree phase control in motor drives and fine frequency modulation in resonant converters-all verified in the TMS320F28068UPZT device characterization data.

Can the TMS320F28068UPZT perform simultaneous sampling across both ADCs?

Yes, the TMS320F28068UPZT supports hardware-synchronized simultaneous sampling across its dual 12-bit ADC subsystems. Using ePWM or HRCAP-generated start-of-conversion (SOC) signals, both ADCs can initiate conversion on the same system clock edge with <10-ns skew. This capability is essential for vector control of three-phase motors and is explicitly enabled via the ADCTRL3 register and SOC configuration in the TMS320F28068UPZT Technical Reference Manual.

What development tools are officially supported for the TMS320F28068UPZT?

Texas Instruments officially supports the TMS320F28068UPZT with C2000Ware software framework, Code Generation Tools (C2000 C/C++ Compiler v22.x+), and CCS IDE v12.x+. Hardware tools include the TMDXDOCK28069MISO controlCARD and TMDSCNCD28069M docking station. All drivers, examples, and IQmath libraries targeting the TMS320F28068UPZT are maintained in TI's C2000WARE v4.0+ releases and validated on production silicon.