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Texas Instruments LM3S2911-IQC50-A2T
- Part No.:
- LM3S2911-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2911-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S2911-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated CAN 2.0A/B controller, 4 UARTs, 2 SSI, I²C, 8-channel 10-bit ADC, and hibernation module for ultra-low-power operation; used in industrial motor control and embedded automation systems requiring deterministic real-time response.
For engineers reviewing the LM3S2911-IQC50-A2T datasheet, LM3S2911-IQC50-A2T pinout, LM3S2911-IQC50-A2T application, or LM3S2911-IQC50-A2T equivalent, key selection criteria include Cortex-M3 core performance at 50 MHz, on-chip CAN interface with message object RAM, hibernation mode current of 1.7 µA, and QFP-100 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The LM3S2911-IQC50-A2T implements the ARMv7-M architecture with NVIC supporting up to 48 interrupt lines, SysTick timer, and MPU for memory protection. It integrates a dedicated CAN controller compliant with ISO 11898-1, supporting both standard and extended frames with 32 message objects.
Its analog subsystem includes an 8-channel 10-bit ADC with sample rate up to 1 MSPS and programmable trigger sources, while the hibernation module provides RTC, battery-backed memory, and wake-up from deep-sleep using external pins or RTC match events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max operation - enables deterministic real-time task scheduling with <12 ns instruction cycle time. |
| Flash / SRAM | 256 KB flash / 32 KB SRAM - supports full firmware image plus runtime data buffers without external memory. |
| CAN Interface | One CAN 2.0A/B controller with 32 message objects - handles concurrent transmit/receive operations without CPU polling overhead. |
| ADC | 8-channel 10-bit SAR ADC, 1 MSPS - captures sensor data from multiple analog inputs in single scan with hardware sequencer. |
| Hibernate Current | 1.7 µA typical - allows battery-powered operation for months in low-duty-cycle monitoring applications. |
| Package | 100-pin LQFP (14 × 14 mm), RoHS-compliant - compatible with standard industrial PCB assembly processes. |
| Temperature Range | –40°C to +85°C - qualified for use in factory automation, motor drives, and outdoor control enclosures. |
Pinout & Package
LM3S2911-IQC50-A2T is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermal pad exposed on underside for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA | Core & analog power supply | 3.3 V nominal; separate analog rail reduces noise coupling into ADC and comparators. |
| GND / GNDA | Digital & analog ground | Independent ground planes required for signal integrity in mixed-signal operation. |
| PD0 / PD1 | CAN0RX / CAN0TX | Dedicated differential CAN transceiver interface pins - require external CAN PHY for bus connection. |
| PA0–PA7 | SSI0 / UART0 / GPIO | Multiplexed functions; default as GPIO but configurable as SSI0 clock/data or UART0 TX/RX. |
| PH0–PH3 | ADC0 channel 0–3 | Analog input channels with internal programmable gain amplifier support for direct sensor interfacing. |
| RTCCLK / HIB | Hibernation module clock / reset | Enables RTC operation during hibernate; HIB pin asserts reset when exiting hibernation mode. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0A/B Controller | Hardware message filtering and buffering eliminate CPU overhead for CAN protocol handling in automotive and industrial networks. |
| Hibernation Module with RTC | Retains real-time clock and 2 KB battery-backed SRAM while drawing only 1.7 µA - enables long-term logging without external RTC chip. |
| Programmable GPIO Peripherals | Each of 64 GPIO pins supports edge-triggered interrupts, slew-rate control, and open-drain configuration - simplifies interface to legacy industrial sensors and actuators. |
| Dual-Clock System Control | Separate PLL and oscillator control allows dynamic switching between system clock (50 MHz) and low-frequency hibernate clock (32.768 kHz) - optimizes power vs. performance trade-offs. |
| On-Chip Flash with ECC | 256 KB flash includes error-correcting code for single-bit error correction and double-bit error detection - improves firmware reliability in electrically noisy environments. |
Applications
| Industrial Motor Control | Building Automation Gateway |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms with synchronized PWM generation and current sensing via ADC. Use Value: Integrated 50 MHz Cortex-M3 core and 8-channel ADC enable sub-microsecond loop timing; CAN interface directly connects to drive inverters and supervisory PLCs. | Use Scenario: Protocol translation between BACnet MS/TP field devices and Ethernet-based building management systems. IC Role / Device Role / Timing Role: Dual-role controller managing RS-485 physical layer (via UART) and Ethernet MAC (external PHY), with CAN used for local device diagnostics. Use Value: Four UARTs support simultaneous MS/TP, Modbus RTU, and debug interfaces; hibernation mode extends battery life in wireless sensor node gateways. |
| Factory Floor I/O Module | Energy Meter Data Concentrator |
Use Scenario: DIN-rail mounted remote I/O unit collecting digital inputs, analog sensor readings, and controlling relay outputs across production lines. IC Role / Device Role / Timing Role: Central processing unit coordinating GPIO scanning, ADC sampling, and CAN-based reporting to SCADA systems. Use Value: 64 GPIOs with interrupt capability allow direct connection to 24 V DC sensors; CAN message objects handle prioritized alarm reporting without software intervention. | Use Scenario: Aggregating pulse-count and voltage/current measurements from up to 16 smart meters in utility substations. IC Role / Device Role / Timing Role: Time-synchronized data acquisition engine using RTC and periodic ADC triggers to align meter readings across distributed nodes. Use Value: Battery-backed RTC ensures accurate timestamping during AC power loss; 10-bit ADC with hardware averaging reduces noise in precision energy measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28027PTT | DSP-based C2000 core, 60 MHz, no native CAN controller (requires external transceiver + software stack), 32 KB flash. | Optimized for high-speed motor control math; lacks integrated CAN and hibernation - requires external RTC and backup power circuitry. | Select when advanced PWM timing resolution and floating-point math acceleration outweigh CAN integration needs. |
| STM32F103VCT6 | Cortex-M3 core, 72 MHz, 256 KB flash, 48 KB SRAM, one CAN 2.0B controller, but no hibernation module or battery-backed memory. | Higher clock speed and larger SRAM suit complex protocol stacks; missing hibernation limits suitability for battery-powered remote monitoring. | Select when USB connectivity and higher CPU throughput are critical, and external RTC + backup power can be accommodated. |
Compared with TMS320F28027PTT and STM32F103VCT6, the LM3S2911-IQC50-A2T uniquely combines CAN 2.0A/B hardware offload, hibernation with RTC and battery-backed SRAM, and industrial temperature qualification - making it optimal for self-contained, low-power, CAN-connected edge controllers where firmware robustness and long-term autonomous operation are essential.
Availability
LM3S2911-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, factory floor I/O modules, and energy meter data concentrators requiring stable component supply and long-lifecycle support.
Supply support for LM3S2911-IQC50-A2T 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 connectivity technologies, with over 50 years of innovation in industrial and automotive electronics.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications demanding integrated peripherals, low-power operation, and industrial-grade reliability - targeting motor control, automation, and sensor hub designs.
FAQ
What is the maximum operating frequency of the LM3S2911-IQC50-A2T?
The LM3S2911-IQC50-A2T operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL locked to the main oscillator. This frequency is specified under industrial temperature conditions (–40°C to +85°C) and 3.3 V supply, and enables deterministic interrupt latency and real-time peripheral response required for motor control loops and CAN message handling in the LM3S2911-IQC50-A2T.
Does the LM3S2911-IQC50-A2T include a hardware CAN controller?
Yes, the LM3S2911-IQC50-A2T integrates a fully compliant CAN 2.0A/B controller with 32 message objects, acceptance filtering, and automatic retransmission. It supports both standard (11-bit) and extended (29-bit) identifiers, and operates without CPU intervention for message transmission and reception - a core feature distinguishing the LM3S2911-IQC50-A2T from general-purpose microcontrollers lacking native CAN hardware.
What is the hibernation current consumption of the LM3S2911-IQC50-A2T?
The LM3S2911-IQC50-A2T draws 1.7 µA typical current in hibernation mode with RTC enabled and 2 KB of SRAM retained. This value is measured at 3.3 V and 25°C per the official Texas Instruments datasheet (SPMS057I), and reflects the ultra-low-power capability that makes the LM3S2911-IQC50-A2T suitable for battery-backed monitoring applications where multi-year operation is required without maintenance.
How much flash and SRAM memory does the LM3S2911-IQC50-A2T provide?
The LM3S2911-IQC50-A2T includes 256 KB of on-chip flash memory and 32 KB of SRAM. The flash supports in-system programming and includes ECC for single-bit error correction, while the SRAM is partitioned to support both general-purpose variables and dedicated message object buffers for the CAN controller - ensuring reliable firmware execution and real-time communication in the LM3S2911-IQC50-A2T.
Is the LM3S2911-IQC50-A2T qualified for industrial temperature operation?
Yes, the LM3S2911-IQC50-A2T is rated for industrial temperature operation from –40°C to +85°C, as confirmed by Texas Instruments' production data sheet SPMS057I. This qualification covers all core functionality including flash programming, CAN communication, ADC conversion, and hibernation mode - making the LM3S2911-IQC50-A2T appropriate for deployment in uncontrolled environments such as factory floors, outdoor control cabinets, and transportation infrastructure.
LM3S2911-IQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 60
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2911-IQC50-A2T FAQ
1.How can I place an order for LM3S2911-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2911-IQC50-A2T 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 LM3S2911-IQC50-A2T reliable?
The price and inventory of LM3S2911-IQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2911-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2911-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2911-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2911-IQC50-A2T?
LM3S2911-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2911-IQC50-A2T 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 LM3S2911-IQC50-A2T?
For technical support, including LM3S2911-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2911-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S2911-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2911-IQC50-A2T 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 LM3S2911-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2911-IQC50-A2T?
All LM3S2911-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2911-IQC50-A2T, 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 LM3S2911-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2911-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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