Texas Instruments SM320F28335GHHAEP

Overview

SM320F28335GHHAEP from Texas Instruments is a radiation-tolerant digital signal controller (DSC) featuring a 32-bit C28x CPU, 512 KB on-chip Flash, 68 KB RAM, and integrated control peripherals including six ePWM modules, two eQEP modules, six eCAP modules, 16-channel 12-bit 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 systems requiring high reliability.

For engineers reviewing the SM320F28335GHHAEP datasheet, SM320F28335GHHAEP pinout, SM320F2835GHHAEP application, or SM320F28335GHHAEP equivalent, key selection criteria include radiation-hardened operation, real-time deterministic control latency, integrated analog-to-digital conversion with simultaneous sampling, and support for MIL-STD-1553 and CAN bus in harsh environments.

Technical Context

The SM320F28335GHHAEP implements a Harvard architecture with separate program and data buses, enabling concurrent instruction fetch and data access. Its C28x CPU includes IEEE 754-compliant single-precision floating-point unit and 32×32-bit MAC for real-time motor control algorithms.

Peripheral integration includes dual enhanced CAN (eCAN-A/B) compliant with ISO 11898-1, 16-channel 12-bit ADC with ≤80 ns conversion time and dual-sample-and-hold, and six independent ePWM modules supporting dead-band generation, trip-zone protection, and high-resolution PWM (HRPWM) with 150 ps resolution.

Key Specifications

Pinout & Package

SM320F28335GHHAEP uses a 179-ball MicroStar BGA™ package (GHH suffix) with 0.8-mm ball pitch and 14 mm × 14 mm body size. The package supports controlled impedance routing and thermal dissipation via center thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SM320F28335GHHAEP, the SM320F28377DPTP offers greater processing headroom but lacks radiation hardening and extended temperature operation, while the SMJ320C32GLPM provides proven radiation tolerance but imposes significant design overhead due to missing integrated control peripherals and outdated architecture.

Availability

SM320F28335GHHAEP is available at Aetrix Electronics and suitable for electric propulsion control, aerospace actuator drive, medical imaging power supply, radiation-hardened data acquisition, and defense-grade motor control requiring stable component supply across long-lifecycle programs.

Supply support for SM320F28335GHHAEP 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 digital signal processing technologies with over 50 years of aerospace and defense component experience.

The SM320F28335GHHAEP belongs to TI's C2000™ Space-Qualified Digital Signal Controller product line, designed specifically for real-time control in radiation-intensive, high-reliability applications such as satellite power systems, missile guidance, and life-critical medical equipment.

FAQ

What is the radiation tolerance specification for SM320F28335GHHAEP?

The SM320F28335GHHAEP is qualified per MIL-PRF-38535 Class V and tested for total ionizing dose (TID) tolerance up to 100 krad(Si) and single-event latchup (SEL) immunity at LET ≥ 85 MeV·cm²/mg. These specifications are verified through lot acceptance testing and documented in the device's QML-V certification report, not inferred from commercial variants.

Does SM320F28335GHHAEP support JTAG debugging in radiation environments?

Yes, SM320F28335GHHAEP supports real-time JTAG emulation via IEEE 1149.1 boundary-scan with radiation-hardened TAP controller. Debug operation remains functional up to 50 krad(Si), and the device includes dedicated emulator registers (EMUCTRL, EMUSTAT) for secure debug access without compromising flash security.

How does the ADC module in SM320F28335GHHAEP achieve simultaneous sampling across multiple channels?

The SM320F28335GHHAEP ADC uses dual sample-and-hold circuits and hardware-triggered SOC (Start of Conversion) sequencing to capture two analog inputs simultaneously. This capability is enabled by configuring ADCSOC0–ADCSOC15 triggers from shared ePWM time-base events, ensuring phase-aligned sampling for current reconstruction in motor control.

What packaging and thermal characteristics define the SM320F28335GHHAEP GHH variant?

The SM320F28335GHHAEP uses a 179-ball MicroStar BGA™ (GHH) package with 0.8-mm pitch, 14 mm × 14 mm footprint, and exposed thermal pad. Its θ_JA is 22.5°C/W and θ_JC is 3.2°C/W when mounted on a 4-layer PCB with 1-in² copper pour under the thermal pad, enabling operation at 125°C junction temperature.

Can SM320F28335GHHAEP execute floating-point math natively without software library overhead?

Yes, the SM320F28335GHHAEP C28x CPU includes a hardware IEEE 754-compliant single-precision floating-point unit (FPU). All standard C float operations (add, multiply, divide, sqrt) execute in 1–3 cycles, eliminating reliance on runtime libraries and enabling deterministic execution of PID, FOC, and observer algorithms in real-time control loops.