Texas Instruments TMS320F28052FPNQ

Overview

TMS320F28052FPNQ from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated CLA accelerator, 12-bit ADC (3.75 MSPS), 14 ePWM channels, and AEC Q100-qualified automotive-grade analog front end - designed for closed-loop motor control in BLDC inverters and AC drive modules.

For engineers reviewing the TMS320F28052FPNQ datasheet, TMS320F28052FPNQ pinout, TMS320F28052FPNQ application, or TMS320F28052FPNQ equivalent, key selection criteria include its 80-pin LQFP package, dual-zone security, on-chip VREG enabling single 3.3-V supply operation, and automotive temperature range (–40°C to 125°C) with Q-grade qualification.

Technical Context

The TMS320F28052FPNQ implements a Harvard-architecture C28x CPU executing at 60 MHz (16.67-ns cycle time) with atomic operations and fast interrupt response, coupled to a standalone 32-bit floating-point CLA for parallel control law execution. Its analog subsystem includes seven comparators with three internal DACs, four PGAs (gain ≈ 3/6/11), and dual-sample-and-hold ADC supporting ratio-metric references.

Peripheral integration centers on real-time control: 14 ePWM outputs with trip-zone protection, one eQEP module, one eCAP input, and communication interfaces including three SCI/UARTs, one SPI, one I²C, and one eCAN bus - all managed via a unified PIE interrupt controller and supported by JTAG boundary scan per IEEE 1149.1.

Key Specifications

Pinout & Package

80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, 0.5-mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28052FPNQ, the TMS320F28054FPNQ offers double flash and SARAM for complex control stacks, while the TMS320F28052MFPNQ trades user memory for pre-integrated motion firmware - making the base TMS320F28052FPNQ optimal for balanced cost, flexibility, and automotive compliance.

Availability

TMS320F28052FPNQ is available at Aetrix Electronics and suitable for AC-input BLDC motor drives, door operator drive control, and inverter & motor control applications requiring stable component supply and AEC Q100-compliant sourcing.

Supply support for TMS320F28052FPNQ 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 delivering analog and embedded processing solutions, with leadership in real-time control, power management, and signal chain technologies.

The TMS320F2805x product line delivers entry-performance C2000™ real-time MCUs optimized for cost-sensitive motor control and digital power applications, integrating analog peripherals and security features into compact low-pin-count packages.

FAQ

What is the maximum operating frequency of the TMS320F28052FPNQ?

The TMS320F28052FPNQ operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This clock rate is achieved using either the internal zero-pin oscillators or an external crystal/resonator connected to X1/X2 pins. The device supports multiple clock sources including two internal oscillators, external clock input, and crystal oscillator mode - all configurable via the CLKCTL register. All timing-critical peripherals such as ePWM and ADC are synchronized to this system clock domain.

Does the TMS320F28052FPNQ support JTAG debugging?

Yes, the TMS320F28052FPNQ fully supports IEEE 1149.1-1990 JTAG boundary scan through dedicated pins TRST (Pin 9), TCK (GPIO38), TMS (GPIO36), TDI (GPIO35), and TDO (GPIO37). These signals feature internal pullups (except TRST, which requires an external 2.2-kΩ pulldown) and are compatible with standard TI XDS debug probes. Real-time debug capabilities include hardware breakpoints, watchpoints, and live register/memory inspection without halting CPU execution.

What analog peripherals are integrated into the TMS320F28052FPNQ?

The TMS320F28052FPNQ integrates a comprehensive analog front end: a 12-bit, 3.75-MSPS ADC with 16 channels and dual sample-and-hold; seven analog comparators with up to three internal 6-bit DACs; one buffered reference DAC (VREFOUT); four programmable gain amplifiers (PGAs) offering gains of ≈3, 6, or 11; and four digital filters. These components are interconnected to support hardware-accelerated protection schemes - for example, comparator outputs can directly trigger ePWM trip zones without CPU intervention.

Is the TMS320F28052FPNQ pin-compatible with other F2805x devices?

Yes, the TMS320F28052FPNQ shares identical 80-pin LQFP (PN) packaging and pinout with all members of the F2805x family including TMS320F28054FPNQ, TMS320F28053FPNQ, and TMS320F28055FPNQ. Signal assignments, power/ground pin locations, and peripheral multiplexing are consistent across the series. This allows direct PCB reuse when upgrading flash size or adding CLA functionality - provided software accommodates differences in memory map and peripheral enable registers.

What security features does the TMS320F28052FPNQ provide?

The TMS320F28052FPNQ implements dual-zone security with a 128-bit encryption key to protect on-chip flash, SARAM, OTP, and Secure ROM. Memory blocks are locked independently, preventing unauthorized read/write access and firmware reverse-engineering. Security is enforced at boot time and runtime via hardware gates; once locked, zones cannot be unlocked without full chip erase. Additionally, the boot ROM contains secure copy code functions and supports encrypted firmware loading through the serial interfaces.