Texas Instruments F280021PTQR

Overview

F280021PTQR from Texas Instruments is a C28x-based real-time microcontroller optimized for power electronics control, featuring a 100MHz DSP core with IEEE 754 FPU, 32KB flash, 24KB RAM (ECC/parity-protected), dual-zone security, and 20 GPIO pins in a 48-pin LQFP package. It supports high-resolution ePWM (150ps), dual 12-bit 3.45MSPS ADCs, four CMPSS modules, and CAN/I²C/SPI/FSI interfaces - deployed in solar inverters, EV charging stations, and industrial motor drives.

For engineers reviewing the F280021PTQR datasheet, F280021PTQR pinout, F280021PTQR application, or F280021PTQR equivalent, key selection criteria include its AEC-Q100 qualified –40°C to 125°C free-air temperature rating, 48-pin LQFP footprint, 32KB flash capacity, integrated CLB support for custom logic augmentation, and functional safety documentation for ISO 26262 system design.

Technical Context

The F280021PTQR implements TI's C28x 32-bit CPU with hardware-accelerated TMU and VCRC instructions for real-time control math, including NLPID and fast integer division. Its analog subsystem tightly couples two 12-bit ADCs (3.45MSPS) with four windowed comparators (CMPSS) and integrated 12-bit DAC references for closed-loop protection.

Control peripherals include 14 ePWM channels (8 with 150ps HRPWM), three eCAP modules (one with HRCAP), two eQEP modules, and a Configurable Logic Block (CLB) for FPGA-like logic offload. Communication is enabled via one CAN, two I²C, two SPI, one SCI, two LIN, one PMBus, and one FSI (200Mbps) interface - all multiplexed across 20 GPIO pins in the PT package.

Key Specifications

Pinout & Package

Package: 48-pin Low-profile Quad Flatpack (LQFP), 9mm × 9mm body size, 0.5mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with F280021PTQR, F280023PTQR offers double the flash for complex digital power stacks, while F280021PNSR provides 43 GPIO and full ADC channel count - making the PT variant optimal for space-constrained, cost-sensitive single-axis or solar optimizer designs.

Availability

F280021PTQR is available at Aetrix Electronics and suitable for solar power optimizers, EV DC charging stations, and industrial AC-DC power supplies requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for F280021PTQR 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 specializing in analog, embedded processing, and power management technologies.

The TMS320F28002x product line delivers scalable real-time microcontrollers for high-efficiency power electronics - targeting solar inverters, EV infrastructure, motor drives, and digital power systems where ultra-low latency and hardware-accelerated control are critical.

FAQ

What is the maximum operating frequency of the C28x CPU in the F280021PTQR?

The F280021PTQR features a C28x 32-bit DSP core operating at 100MHz. This frequency is fixed and guaranteed across the full –40°C to 125°C free-air temperature range. The CPU executes both floating-point and fixed-point instructions with hardware acceleration from the FPU32, TMU, and VCRC units - enabling deterministic real-time loop execution in digital power applications.

Does the F280021PTQR include hardware support for functional safety standards?

Yes, the F280021PTQR includes documented functional safety features aligned with ISO 26262, IEC 61508, and IEC 60730. These include Memory Power-On Self Test (MPOST), Hardware Built-in Self Test (HWBIST), windowed watchdog timer, dual-clock comparator (DCC), and ECC/parity protection on flash and RAM. Texas Instruments provides safety manuals and diagnostic coverage analysis to support ASIL-B system development.

How many analog input channels are accessible on the F280021PTQR in the 48-pin PT package?

The F280021PTQR in the 48-pin LQFP (PT) package provides 14 external analog input channels - derived from the A0–A15 and C0–C15 pin groups with multiplexing. These connect to two independent 12-bit, 3.45MSPS ADCs. Additionally, the device integrates a temperature sensor and supports up to 16 digital inputs on analog-capable pins, enhancing flexibility for sensor-rich power systems.

What communication interfaces does the F280021PTQR support, and which are available in the PT package?

The F280021PTQR supports CAN, two I²C, two SPI, one SCI (UART-compatible), two LIN, one PMBus, and one FSI (200Mbps) interface. In the 48-pin PT package, all these peripherals are available through pin multiplexing across the 20 GPIO terminals. No communication interface is disabled due to package size - functionality is preserved, though pin count limits simultaneous use of all interfaces without careful mux planning.

Is the F280021PTQR pin-compatible with other devices in the F28002x family?

No, the F280021PTQR is not pin-compatible with higher-pin-count variants like the PN (80-pin) or PM (64-pin) packages. However, it shares identical signal functionality and register mapping with other PT-package devices (e.g., F280023PTQR, F280021PNSR). Pin compatibility exists only within the same PT footprint - meaning F280021PTQR and F280023PTQR can be substituted on the same PCB layout with firmware update.