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Texas Instruments SM320F28335GBS
- Part No.:
- SM320F28335GBS
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 181-BCPGA Exposed Pad
- Datasheet:
-
SM320F28335GBS.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 181CPGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,044
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Product details
Overview
SM320F28335GBS from Texas Instruments is a radiation-tolerant, high-temperature digital signal controller (DSC) featuring a 150-MHz C28x CPU, 512 KB on-chip Flash, 68 KB RAM, and integrated control peripherals including six ePWM modules, two eQEPs, six eCAPs, and a 12-bit 16-channel ADC. It operates from –55°C to 125°C and targets motor control, power conversion, and avionics systems requiring deterministic real-time processing.
For engineers reviewing the SM320F28335GBS datasheet, SM320F28335GBS pinout, SM320F28335GBS application, or SM320F28335GBS equivalent, key selection criteria include its extended temperature grade, dual CAN interfaces, high-resolution PWM capability, and support for external memory via XINTF - all critical for harsh-environment embedded control designs.
Technical Context
The SM320F28335GBS implements a Harvard architecture with separate program and data buses, enabling concurrent instruction fetch and data access. Its C28x CPU includes IEEE-754 single-precision floating-point unit (FPU) support and 32-bit accumulator-based arithmetic optimized for motor control algorithms.
Real-time control is enhanced by dedicated hardware peripherals: ePWM modules with trip-zone protection and dead-band generation, HRPWM for sub-nanosecond resolution, and dual eCAN-A/eCAN-B controllers compliant with ISO 11898-1. The device uses a PLL-based clock system with configurable SYSCLKOUT up to 150 MHz and supports multiple low-power modes (IDLE, STANDBY, HALT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed/floating-point DSP core with FPU - enables real-time execution of complex control loops without software emulation. |
| Max Clock Frequency | 150 MHz SYSCLKOUT - delivers deterministic 6.67 ns instruction cycle time for time-critical servo and inverter control. |
| Flash Memory | 512 KB on-chip Flash with ECC - provides nonvolatile program storage with error detection for mission-critical firmware integrity. |
| RAM | 68 KB total (M0/M1 SARAM + L0–L7 SARAM) - supports fast-access data buffers, coefficient tables, and real-time variable storage. |
| ADC | 12-bit, 16-channel, 12.5 MSPS - captures analog sensor inputs (e.g., current/voltage feedback) with simultaneous sampling across two channels. |
| ePWM Modules | 6 independent modules with HRPWM extension - generates precise gate drive signals with <150 ps resolution for SiC/GaN power stages. |
| Communication Interfaces | eCAN-A/eCAN-B (dual), SCI-A/B/C, SPI-A, McBSP, I2C - enables robust multi-bus connectivity in distributed control architectures. |
| Operating Temperature | –55°C to +125°C - qualified for space-grade and high-reliability industrial environments without derating. |
Pinout & Package
SM320F28335GBS is housed in a 181-pin Ceramic Quad Flat Package (CQFP) with 0.65 mm pitch, designed for hermetic sealing and thermal stability in extreme environments. Pin assignments are defined per TI SPRS682E Figure 2-1 and Table 2-5 (Signal Descriptions for GB package).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO / VDDA / VDD | Power supply rails | Separate 3.3-V I/O, analog, and core supplies enable noise isolation and mixed-signal integrity. |
| XCLKIN / XCLKOUT | Oscillator input/output | Accepts 1–20 MHz crystal or external clock; outputs buffered system clock for synchronization. |
| GPIO0–GPIO67 | Configurable digital I/O | Supports peripheral multiplexing (ePWM, eCAP, eQEP, SCI, SPI, etc.) and interrupt-capable inputs. |
| EPWMxA / EPWMxB | PWM output pairs | Dedicated complementary outputs per ePWM module with programmable dead-band and trip-zone fault response. |
| CANA_TX / CANA_RX / CANB_TX / CANB_RX | CAN transceiver interface | Dual independent CAN physical layer interfaces supporting ISO 11898-1 at up to 1 Mbps. |
| ADCSOCx / ADCINA0–15 | ADC start-of-conversion trigger / analog inputs | Hardware-triggered sampling synchronized to PWM events; 16 single-ended or 8 differential analog channels. |
Key Features
| Feature | Design Value |
|---|---|
| High-Resolution PWM (HRPWM) | Extends ePWM timing resolution to 150 ps, enabling precise phase-shift control for multi-level inverters and resonant converters. |
| Dual eCAN Controllers | Independent CAN-A and CAN-B modules with full message RAM, mailboxes, and error counters - supports redundant bus architectures. |
| External Interface (XINTF) | 16/32-bit parallel bus with up to 1-MB address space, programmable wait states, and READY handshake - interfaces directly to external Flash, SRAM, or FPGA logic. |
| Security Module | Code security logic prevents unauthorized readback of Flash contents, protecting proprietary control algorithms and calibration data. |
| Boot ROM with Flash API | On-chip ROM contains flash programming routines and boot loader - enables field firmware updates without external programming hardware. |
| Peripheral Interrupt Expansion (PIE) | Centralized 96-vector interrupt controller maps 12 peripheral groups to CPU interrupts - simplifies real-time ISR prioritization and nesting. |
Applications
| Avionics Motor Control | Spacecraft Power Management |
|---|---|
|
Use Scenario: Real-time field-oriented control (FOC) of brushless DC motors in satellite reaction wheels and actuator systems. IC Role / Device Role / Timing Role: Primary DSC executing position/speed loops, generating HRPWM gate signals, and managing CAN telemetry links. Use Value: Radiation-hardened design and –55°C to +125°C operation ensure uninterrupted motor control during orbital thermal cycling and cosmic ray exposure. |
Use Scenario: Digital regulation of solar array maximum power point tracking (MPPT) and battery charge/discharge sequencing in LEO satellites. IC Role / Device Role / Timing Role: System controller coordinating ADC sampling, PWM modulation, and CAN-based health monitoring across power subsystems. Use Value: Dual eCAN interfaces allow isolated command and telemetry buses; on-chip Flash with ECC maintains firmware integrity after single-event upsets. |
| High-Temperature Industrial Drives | Nuclear Instrumentation Systems |
|
Use Scenario: Closed-loop vector control of induction motors in oil/gas downhole drilling equipment operating above 100°C ambient. IC Role / Device Role / Timing Role: Real-time DSC handling current sensing, torque calculation, and insulated gate driver timing with nanosecond precision. Use Value: Extended temperature qualification eliminates need for external cooling; XINTF enables local FPGA co-processing for adaptive filtering. |
Use Scenario: Pulse-height analysis and timing acquisition in radiation detector front-end electronics deployed in reactor containment zones. IC Role / Device Role / Timing Role: High-speed ADC controller triggering on scintillation pulses, timestamping events via eQEP, and buffering data to external memory. Use Value: 12.5 MSPS ADC with simultaneous sampling captures fast pulse waveforms; GPIO-interrupt latency <100 ns ensures precise event capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM320F28379DPTP | Higher-performance C28x+CLA dual-core, 1 MB Flash, 200-MHz CPU, but rated only to 105°C and lacks radiation tolerance. | Targets commercial/industrial servo drives where extended temperature and TID hardness are not required. | Select when higher computational throughput is needed and environmental qualification is less stringent. |
| TMS320F28076PTP | Lower-cost C28x-only variant, 512 KB Flash, 120-MHz CPU, no HRPWM, single CAN, and rated to 105°C only. | Suitable for cost-sensitive motor control in benign environments, such as HVAC blowers or pumps. | Choose for simplified control tasks where dual CAN, HRPWM, and extreme temperature operation are unnecessary. |
Compared with SM320F28335GBS, the SM320F28379DPTP offers greater processing headroom but sacrifices radiation tolerance and extended temperature range, while the TMS320F28076PTP reduces feature set and environmental rating to lower BOM cost - making SM320F28335GBS uniquely suited for mission-critical aerospace and nuclear applications.
Availability
SM320F28335GBS is available at Aetrix Electronics and suitable for avionics motor control, spacecraft power management, high-temperature industrial drives, nuclear instrumentation systems, and radiation-hardened embedded computing requiring stable component supply across long production lifecycles.
Supply support for SM320F28335GBS 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 leader specializing in analog, embedded processing, and high-reliability technologies, with decades of heritage in space-grade and military-spec components.
The SM320F28335GBS belongs to TI's C2000™ DSC product line, engineered specifically for real-time control of power electronics, motion systems, and energy infrastructure in extreme operational environments.
FAQ
What is the operating temperature range of the SM320F28335GBS?
The SM320F28335GBS is specified for continuous operation from –55°C to +125°C, validated per MIL-PRF-38535 Class V requirements. This extended range enables deployment in space, downhole, and nuclear environments where standard commercial or industrial ICs would fail. Thermal derating curves in the datasheet confirm reliability at maximum junction temperature under sustained load conditions.
Does the SM320F28335GBS include on-chip Flash memory with error correction?
Yes, the SM320F28335GBS integrates 512 KB of on-chip Flash memory with built-in ECC circuitry that detects and corrects single-bit errors in real time. This feature ensures firmware integrity in radiation-prone environments and extends Flash endurance beyond 10,000 write/erase cycles - critical for field-upgradable avionics and industrial control systems.
How many CAN interfaces does the SM320F28335GBS support?
The SM320F28335GBS features two fully independent enhanced CAN (eCAN) modules: eCAN-A and eCAN-B. Each supports ISO 11898-1 compliance, up to 1 Mbps bit rate, 32 message objects, and dedicated message RAM - enabling redundant communication paths or segregated control/telemetry networks in safety-critical systems.
What packaging type is used for the SM320F28335GBS?
The SM320F28335GBS is packaged in an 181-pin Ceramic Quad Flat Package (CQFP), designated "GB" in TI documentation. This hermetically sealed ceramic package meets MIL-STD-883 requirements for moisture resistance, thermal cycling, and mechanical robustness - essential for long-term reliability in vacuum and high-vibration aerospace applications.
Is the SM320F28335GBS pin-compatible with other C2000 DSCs like the F28335 or F28379D?
No, the SM320F28335GBS is not pin-compatible with commercial variants such as the TMS320F28335 or SM320F28379D. Its 181-pin GB package differs in pin count, layout, and power/ground distribution from the 176-pin PTP LQFP used in most commercial versions. Board redesign is required when migrating to or from the SM320F28335GBS due to package and thermal interface differences.
SM320F28335GBS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 181-BCPGA Exposed Pad
- Series:
- C2000™ C28x Delfino™
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 150MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, McBSP, SCI, SPI, UART/USART
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 88
- Program Memory Size:
- 512KB (256K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 34K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.805V ~ 1.995V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -55°C ~ 210°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
SM320F28335GBS FAQ
1.How can I place an order for SM320F28335GBS through Aetrix?
Please submit a Request for Quotation (RFQ) for SM320F28335GBS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM320F28335GBS reliable?
The price and inventory of SM320F28335GBS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM320F28335GBS is usually 5 days.
3.What payment methods are accepted for SM320F28335GBS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM320F28335GBS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM320F28335GBS?
SM320F28335GBS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM320F28335GBS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM320F28335GBS?
For technical support, including SM320F28335GBS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM320F28335GBS requirements.
6.How does Aetrix verify that SM320F28335GBS is sourced from the original manufacturer or authorized distributors?
All SM320F28335GBS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM320F28335GBS meets industry standards.
7.What is the process for return or replacement of SM320F28335GBS?
All SM320F28335GBS units undergo pre-shipment inspection (PSI). If there is an issue with SM320F28335GBS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM320F28335GBS part is unused and in its original packaging.
Return procedure for SM320F28335GBS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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