Texas Instruments SM320F28335PTPMEP

Overview

SM320F28335PTPMEP from Texas Instruments is a radiation-tolerant digital signal controller (DSC) featuring a 32-bit C28x CPU core, 512 KB on-chip Flash memory, 68 KB RAM, and integrated control peripherals including six ePWM modules, two eQEP modules, six eCAP modules, a 12-bit 16-channel ADC, and dual CAN interfaces. It operates at 150 MHz with extended temperature range (–55°C to 125°C) and is qualified for defense, aerospace, and medical applications.

For engineers reviewing the SM320F28335PTPMEP datasheet, SM320F28335PTPMEP pinout, SM320F28335PTPMEP application, or SM320F28335PTPMEP equivalent, key selection criteria include radiation-hardened operation, deterministic real-time control latency, integrated high-resolution PWM (HRPWM), dual CAN-A/B support, and compatibility with TI's C2000™ real-time control ecosystem.

Technical Context

The SM320F28335PTPMEP implements a Harvard architecture with separate program and data buses, enabling concurrent instruction fetch and data access. Its C28x CPU supports IEEE 754 single-precision floating-point operations via hardware-assisted Q15/Q31 fixed-point math and includes three 32-bit CPU timers for system timing and interrupt generation.

Real-time control is enhanced by dedicated peripheral frames (PF0–PF3), a Peripheral Interrupt Expansion (PIE) block supporting 96 interrupts, and low-latency trip-zone inputs for motor protection. The device integrates an oscillator/PLL subsystem supporting 150 MHz SYSCLKOUT from a 30 MHz external crystal or internal oscillator, with configurable clock dividers and loss-of-clock detection.

Key Specifications

Pinout & Package

This device is packaged in a 176-pin LQFP (PTP package), with exposed thermal pad for enhanced heat dissipation in high-power control applications. Pin assignments follow TI's standardized C2000™ DSC layout for consistent PCB routing across the F2833x family.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal controller applications.

Compared with SM320F28377DPTP and SM320F28075PTP, the SM320F28335PTPMEP uniquely combines QML-V Class V radiation tolerance, 150-MHz deterministic control, and mature flight-proven firmware libraries - making it the only option for mission-critical space avionics where component failure is not acceptable.

Availability

SM320F28335PTPMEP is available at Aetrix Electronics and suitable for motor control systems, aerospace avionics, power converters, and medical imaging equipment requiring stable component supply across extended product lifecycles.

Supply support for SM320F28335PTPMEP 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, specializing in analog, embedded processing, and digital signal processing technologies for industrial, automotive, and aerospace markets.

The SM320F28335PTPMEP belongs to TI's C2000™ real-time microcontroller product line, designed specifically for high-precision digital control of power electronics, motor drives, and energy systems in harsh environments.

FAQ

What is the radiation tolerance level certified for the SM320F28335PTPMEP?

The SM320F28335PTPMEP is qualified to QML-V Class V per MIL-PRF-38535, with total ionizing dose (TID) tolerance of ≥100 krad(Si) and single-event latchup (SEL) immunity of ≥75 MeV·cm²/mg. These ratings are verified through lot acceptance testing and documented in TI's QML-V certification reports for the SM320F28335PTPMEP device family.

Does the SM320F28335PTPMEP support floating-point arithmetic in hardware?

The SM320F28335PTPMEP features a C28x CPU core with hardware-assisted floating-point operations via its IQmath library and optimized assembly routines, but lacks a dedicated IEEE 754 floating-point unit (FPU). All floating-point computations execute in software with cycle counts documented in TI's C28x IQmath Library User's Guide for the SM320F28335PTPMEP.

What is the maximum supported external memory bandwidth via the XINTF on the SM320F28335PTPMEP?

The SM320F28335PTPMEP XINTF supports up to 32-bit data width and 1-MB address space, with maximum theoretical bandwidth of 60 MB/s in synchronous mode using zero wait states and 30-MHz XTIMCLK. Actual throughput depends on external memory access timing, wait-state configuration, and bus contention, as specified in Section 6.14 of the SM320F28335PTPMEP datasheet.

Can the SM320F28335PTPMEP operate without an external crystal oscillator?

Yes, the SM320F28335PTPMEP includes an internal oscillator capable of generating a stable 10-MHz clock source. This internal oscillator can feed the PLL to achieve the full 150-MHz SYSCLKOUT, though external crystals (e.g., 30 MHz) are recommended for applications requiring tighter frequency stability and lower jitter, such as precision motor control loops.

How many independent PWM channels does the SM320F28335PTPMEP provide?

The SM320F28335PTPMEP integrates six ePWM modules, each providing two complementary outputs (A/B), for a total of 12 independent PWM output signals. Each module supports dead-band generation, trip-zone protection, and HRPWM fine-phase adjustment - enabling full-bridge, three-phase, and multi-level inverter topologies using a single SM320F28335PTPMEP device.