Texas Instruments F280033SPN

Overview

F280033SPN from Texas Instruments is a C28x-based real-time microcontroller designed for power electronics control, featuring a 120-MHz 32-bit DSP core with IEEE 754 FPU, 128KB flash (ECC-protected), 69KB RAM (ECC-protected), and 16 ePWM channels with 8 high-resolution (150-ps) outputs. It integrates three 4-MSPS 12-bit ADCs, four windowed comparators (CMPSS), two buffered DACs, and supports CAN FD, FSI (200Mbps), and dual CAN interfaces - deployed in servo drives and solar inverters.

For engineers reviewing the F280033SPN datasheet, F280033SPN pinout, F280033SPN application, or F280033SPN equivalent, this page delivers verified specifications, package mapping to 80-pin LQFP (PN), functional safety readiness (ASIL B/SIL 2 capable), and confirmed alternative options for motor control and digital power designs.

Technical Context

The F280033SPN implements a deterministic real-time control architecture centered on the C28x CPU running at 120 MHz with hardware-accelerated math (FPU, TMU, VCRC) and no CLA or CLB blocks - distinguishing it from higher-tier F28003x variants. Its analog subsystem tightly couples three 12-bit ADCs (4 MSPS, 250 ns conversion time) with CMPSS modules and 2 buffered DACs for closed-loop feedback in switching power stages.

Control peripherals include 16 ePWM channels (8 with 150-ps HRPWM resolution), 3 eCAP modules (1 with HRCAP), 2 eQEP modules, and 8 SDFM input channels. Communication is supported via 1 DCAN, 1 MCAN (CAN FD), 2 SPI, 2 SCI, 2 I²C, 2 LIN, 1 PMBus, and 1 FSI interface - all accessible on the 80-pin PN package with validated pin multiplexing.

Key Specifications

Pinout & Package

80-pin Low-profile Quad Flatpack (LQFP, PN suffix), 14 mm × 14 mm body size, 0.5 mm pitch, RoHS-compliant, thermally enhanced for industrial power applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with F280034PN and F280037CPN, the F280033SPN delivers optimized cost-performance for entry-level digital power and motor control where CLA acceleration and extended memory are unnecessary - retaining full 120-MHz C28x performance, 16-channel ePWM, and dual CAN FD capability in the same PN package.

Availability

F280033SPN is available at Aetrix Electronics and suitable for AC inverter modules, servo drive power stages, and solar string inverters requiring stable component supply across automotive-grade temperature ranges and long-life industrial programs.

Supply support for F280033SPN 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 developed specifically for ultra-low-latency power electronics control - targeting motor drives, solar inverters, EV charging, and digital power supplies leveraging SiC/GaN devices.

FAQ

What is the maximum operating frequency of the C28x CPU in F280033SPN?

The C28x CPU in F280033SPN operates at a maximum frequency of 120 MHz, enabled by an internal PLL driven from either an external crystal (1–20 MHz) or oscillator. This frequency is sustained across the full industrial temperature range (–40°C to 125°C ambient) and supports deterministic real-time execution of control algorithms with sub-microsecond interrupt latency. The F280033SPN achieves this without CLA assistance, relying solely on the optimized C28x+FPU+TMU instruction set.

Does F280033SPN support functional safety certification for automotive use?

Yes, F280033SPN shares the same functional safety architecture as its AEC-Q100 qualified counterparts (e.g., F280033-Q1). It includes hardware features required for ASIL B / SIL 2 compliance - such as ECC memory, hardware BIST, MPOST, dual-clock comparator, windowed watchdog, and ERAD - and is supported by TI's ISO 26262 documentation package. While F280033SPN itself is not AEC-Q100 certified, its design lineage and safety mechanisms are identical to qualified variants.

How many ADC channels does F280033SPN support in the 80-pin PN package?

In the 80-pin LQFP (PN) package, F280033SPN supports 18 external single-ended ADC input channels (ADCIN0–ADCIN17), plus two additional channels derived from the gpdac outputs - totaling 20 usable analog inputs. All three integrated 12-bit ADCs operate at 4 MSPS with 250 ns conversion time and share access to the 18-pin analog input mux, with full post-processing block (PPB) support per ADC.

What communication interfaces are available on F280033SPN for isolated host interaction?

F280033SPN includes the Fast Serial Interface (FSI) with one transmitter and one receiver, supporting up to 200 Mbps across galvanic isolation boundaries. Unlike SPI or UART, FSI embeds CRC and frame synchronization for robustness, and is used for secure firmware updates, real-time debug streaming, or host-controlled configuration. No additional level-shifting components are required, making it ideal for isolated MCU-host topologies in EV chargers and UPS systems.

Is the CLA (Control Law Accelerator) available in F280033SPN?

No, the CLA is not available in F280033SPN. According to TI's official device comparison table, F280033 and F280033-Q1 explicitly list "No" under the CLA row, distinguishing them from F280034 and higher variants. All real-time computation must be handled by the main C28x CPU, which remains fully capable at 120 MHz with FPU, TMU, and VCRC acceleration - sufficient for most FOC, PFC, and digital power control loops without offloading.