Texas Instruments F280037SPT

Overview

F280037SPT from Texas Instruments is a C28x-based real-time microcontroller optimized for power electronics control, featuring a 120-MHz C28x CPU with IEEE 754 FPU, 256KB ECC-protected flash, 69KB ECC-protected RAM, and integrated analog peripherals including three 4-MSPS 12-bit ADCs and 16 ePWM channels with 150-ps high-resolution capability. It targets motor drives, digital power converters, and EV charging systems.

For engineers reviewing the F280037SPT datasheet, F280037SPT pinout, F280037SPT application, or F280037SPT equivalent, key selection criteria include its 48-pin LQFP (PT) package, CLA accelerator support, CLB configurability, CAN FD interface, and functional safety readiness for ASIL B/SIL 2 in qualified variants.

Technical Context

The F280037SPT implements a dual-core real-time architecture: the main C28x CPU executes at 120 MHz with FPU, TMU, and VCRC acceleration, while the independent CLA runs parallel floating-point control law code at 120 MHz with dedicated memory and direct peripheral access. Its analog subsystem tightly couples three 12-bit ADCs (4 MSPS), four CMPSS modules with 12-bit DAC references, and two buffered DAC outputs to the PWM timing engine.

Control peripherals include 16 ePWM channels (8 with HRPWM), three eCAP modules (one with HRCAP), two eQEP interfaces, and eight SDFM input channels. Communications are supported via one CAN FD/MCAN port, one DCAN port, two I²C, two SPI, two SCI/LIN, one PMBus, and a 200-Mbps Fast Serial Interface (FSI) for isolated host communication.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F280037C, F280037SPT trades pin count and flash capacity for compact packaging and lower BOM cost, while retaining CLA, CLB, and CAN FD-making it optimal for embedded power modules. Against F280034, F280037SPT delivers full real-time control acceleration and automotive-ready interfaces without increasing footprint.

Availability

F280037SPT is available at Aetrix Electronics and suitable for motor drives, digital power converters, and EV charging infrastructure requiring stable component supply across industrial and automotive temperature ranges.

Supply support for F280037SPT 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 and embedded processing technologies, with leadership in real-time control, power management, and signal chain solutions.

The TMS320F28003x product line was designed specifically for ultra-low-latency power electronics control-including SiC/GaN-based motor drives, digital power supplies, and renewable energy systems-emphasizing deterministic timing, integrated analog, and functional safety readiness.

FAQ

What is the maximum operating frequency of the C28x CPU in the F280037SPT?

The F280037SPT features a C28x CPU core that operates at a maximum frequency of 120 MHz. This clock speed applies to both fixed-point and IEEE 754 single-precision floating-point instruction execution. The CPU is supported by hardware accelerators including the Trigonometric Math Unit (TMU) and VCRC engine, which offload common real-time control computations without reducing the core's nominal 120-MHz throughput. All timing-critical peripherals-including ePWM and ADC-are synchronized to this clock domain.

Does the F280037SPT support CAN FD, and what is its physical layer compliance?

Yes, the F280037SPT includes one Controller Area Network with Flexible Data-Rate (CAN FD/MCAN) port compliant with ISO 11898-1:2015. It supports data rates up to 5 Mbps in FD mode and maintains backward compatibility with classical CAN (1 Mbps). The physical layer interface requires external transceivers; the device provides differential CANRX/CANTX signals compatible with industry-standard isolated or non-isolated CAN transceivers such as the TCAN1042 or ISO1050. No internal termination or biasing is provided.

How much flash memory does the F280037SPT have, and is it ECC-protected?

The F280037SPT contains 256KB (128KW) of on-chip flash memory, organized into two independent 128KB banks. This flash is fully ECC-protected using single-bit error correction and double-bit error detection (SECDED), ensuring data integrity during program storage and execution. ECC coverage extends to all flash sectors, including boot ROM and secure ROM regions. The dual-bank architecture enables concurrent read-while-write operation, allowing firmware updates without halting real-time control execution.

What analog peripherals are integrated into the F280037SPT, and how are they synchronized with PWM?

The F280037SPT integrates three 12-bit analog-to-digital converters (ADCs) operating at 4 MSPS, four windowed comparators (CMPSS) with integrated 12-bit reference DACs, and two 12-bit buffered DAC outputs. ADC conversions are triggered synchronously with ePWM timer events via hardware synchronization signals (ePWM SOCA/SOCB), enabling precise current/voltage sampling at exact switching instants. Each ADC includes four post-processing blocks (PPB) for real-time filtering and offset correction, and the CMPSS modules feed directly into ePWM trip-zone logic for sub-microsecond fault response.

Is the F280037SPT pin-compatible with other devices in the TMS320F28003x family?

No, the F280037SPT is not pin-compatible with other TMS320F28003x variants due to its 48-pin PT package, whereas F280037C uses 100-pin PZ, F280037 uses 64-pin PM, and F280034 also uses 48-pin PT but with different peripheral mapping and reduced feature set. Pin assignments for the PT package are unique to each part number; for example, F280037SPT exposes CAN FD and FSI signals on dedicated pins not present in F280034. Always consult the specific device's pin diagram (SPRSP61C Section 5.5) before PCB layout.