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Texas Instruments LM3S2918-IQC50-A2T
- Part No.:
- LM3S2918-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2918-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S2918-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0B controller, 12-bit ADC (8-channel), and dual UARTs. It operates at 50 MHz, supports hibernation mode with RTC and battery-backed memory, and targets industrial motor control and embedded automation systems.
For engineers reviewing the LM3S2918-IQC50-A2T datasheet, LM3S2918-IQC50-A2T pinout, LM3S2918-IQC50-A2T application, or LM3S2918-IQC50-A2T equivalent, key selection factors include its integrated CAN interface, hibernation power management, 50 MHz real-time performance, and support for deterministic motor control loops in space-constrained designs.
Technical Context
The LM3S2918-IQC50-A2T implements the ARM Cortex-M3 core with NVIC, SysTick, and MPU, enabling deterministic interrupt handling and memory protection. Its peripheral set includes a dedicated CAN 2.0B controller with 32 message objects, two UARTs with IrDA/SIR support, and an SSI interface compliant with SPI/Microwire.
It integrates a hibernation module with external wake-up capability, RTC, and battery-backed RAM, allowing sub-1 µA retention current. The analog subsystem features an 8-channel, 12-bit ADC with hardware averaging and internal temperature sensor - all clocked from a dedicated 400 kHz RC oscillator independent of system clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, 50 MHz max operation - enables real-time deterministic execution with <12-cycle interrupt latency. |
| Memory | 256 KB on-chip flash + 64 KB SRAM - sufficient for standalone firmware with CAN protocol stack and motor control algorithms. |
| CAN Interface | CAN 2.0B-compliant controller with 32 message objects and programmable FIFO - supports full automotive-grade messaging without external transceiver logic. |
| ADC | 12-bit, 1 MSPS, 8-channel SAR ADC with hardware averaging and internal temperature sensor - suitable for closed-loop analog feedback in motor drives. |
| Hibernation Mode | Sub-1 µA retention current with RTC, battery-backed RAM, and external wake-up pins - enables long-term low-power monitoring in remote sensors. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard industrial PCB assembly and thermal management. |
| Operating Temp | –40°C to +85°C (Industrial grade) - validated for deployment in factory automation and outdoor control enclosures. |
Pinout & Package
LM3S2918-IQC50-A2T is housed in a 100-pin LQFP package (JEDEC MS-026AC) with exposed thermal pad. Pin functions are defined per TI SPMS058I datasheet Rev I, July 2014.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital, analog, and core domains enable noise isolation for ADC and PLL stability. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground planes reduce coupling between high-speed logic and sensitive analog circuits. |
| PA0–PA7, PB0–PB7, etc. | GPIO banks A–F | Configurable as digital I/O, timer/ADC/CAN peripherals, or UART/SSI/I2C signals - supports multiplexed signal routing on compact layouts. |
| CAN0RX / CAN0TX | CAN physical layer interface | Dedicated differential pair pins with internal pull-ups - require external CAN transceiver (e.g., SN65HVD230) for bus connection. |
| HIB, RTCCLK, HIBRST | Hibernation control | Enable deep-sleep entry, RTC clock input, and hibernate reset - allow autonomous wake-up without host CPU intervention. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | 32 message objects with mask-based filtering and transmit FIFO - eliminates need for external CAN protocol IC in industrial network nodes. |
| Hibernation Module with RTC | Sub-1 µA retention, battery-backed 256-byte RAM, and calendar-mode RTC - enables time-stamped event logging during power loss. |
| Dual UART with IrDA/SIR | Two independent UARTs supporting infrared data transmission and loopback diagnostics - simplifies field service and wireless configuration. |
| Hardware-Averaged ADC | Up to 64-sample hardware averaging per conversion - improves effective resolution to ~14 bits for noisy industrial sensor inputs. |
| Motor Control Timers | Four 16-bit timers with PWM, capture, and quadrature encoder interfaces - directly drive gate drivers and monitor position feedback in BLDC/PMSM systems. |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
Use Scenario: Closed-loop speed and torque control of 3-phase BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, ADC sampling, and CAN-based command reception. Use Value: Deterministic 50 MHz Cortex-M3 core with motor-specific timers and integrated CAN reduces BOM count and eliminates external protocol translation. | Use Scenario: Distributed sensor node aggregating temperature, occupancy, and lighting status across office zones. IC Role / Device Role / Timing Role: Low-power hibernation manager, multi-sensor ADC aggregator, and CAN/I2C gateway to central building controller. Use Value: Sub-1 µA hibernation with RTC and battery-backed RAM enables years of battery operation while maintaining accurate time-stamped logs. |
| Factory Floor PLC I/O Module | Remote CAN Telemetry Unit |
Use Scenario: DIN-rail mounted I/O expansion module interfacing with legacy 24 V DC sensors and actuators. IC Role / Device Role / Timing Role: Digital I/O conditioning, isolated analog input scaling, and CAN bus master for distributed I/O scanning. Use Value: 100-pin LQFP provides ample GPIO and peripheral mapping for mixed-signal I/O consolidation without FPGA or CPLD. | Use Scenario: Solar-powered telemetry unit reporting equipment status via CAN bus to gateway, then cellular uplink. IC Role / Device Role / Timing Role: CAN message scheduler, low-power wake-up controller, and watchdog-monitored data logger. Use Value: Integrated hibernation + RTC + battery-backed RAM allows reliable timestamping and state retention during intermittent solar charging cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2678-IQC50-A2T | Same core and package, but 128 KB flash, no CAN, added Ethernet MAC - lacks CAN 2.0B controller and hibernation module. | Suitable for wired industrial gateways requiring Ethernet but not CAN bus connectivity. | Select only if Ethernet interface is required and CAN is unnecessary; not drop-in replaceable due to missing CAN and hibernation peripherals. |
| TM4C123GH6PM | Successor family: Cortex-M4F core, 256 KB flash, same 100-pin LQFP, enhanced CAN, USB, and floating-point unit. | Supports more complex motion control, USB HID devices, and real-time signal processing beyond LM3S2918 capabilities. | Preferred for new designs requiring higher precision math, USB device functionality, or extended CAN message filtering - requires firmware porting. |
Compared with LM3S2918-IQC50-A2T, LM3S2678-IQC50-A2T omits critical CAN and hibernation hardware, limiting use in distributed control networks; TM4C123GH6PM offers architectural upgrades including FPU and USB but requires software migration - both serve distinct design generations rather than direct replacements.
Availability
LM3S2918-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation nodes, factory floor PLC I/O modules, and remote CAN telemetry units requiring stable component supply and long-term industrial qualification.
Supply support for LM3S2918-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as TI's first ARM-based microcontroller family targeting cost-sensitive, real-time industrial applications - emphasizing integration of CAN, hibernation, and motor control peripherals in a single chip.
FAQ
What is the maximum operating frequency of the LM3S2918-IQC50-A2T?
The LM3S2918-IQC50-A2T operates at a maximum system clock frequency of 50 MHz, as specified in the Texas Instruments SPMS058I datasheet. This frequency is achieved using the internal PLL with an external crystal or oscillator input. The Cortex-M3 core delivers deterministic real-time performance at this rate, making LM3S2918-IQC50-A2T suitable for time-critical motor control and industrial communication tasks where cycle-accurate timing is essential.
Does the LM3S2918-IQC50-A2T include a CAN controller, and what version does it support?
Yes, the LM3S2918-IQC50-A2T integrates a fully compliant CAN 2.0B controller with 32 message objects, programmable acceptance filtering, and transmit FIFO. It supports both standard (11-bit) and extended (29-bit) identifier formats, and includes error confinement and automatic retransmission. This built-in CAN interface eliminates the need for external CAN protocol ICs in LM3S2918-IQC50-A2T-based designs targeting industrial fieldbus or automotive subsystem applications.
What power-saving features does the LM3S2918-IQC50-A2T offer for battery-operated applications?
The LM3S2918-IQC50-A2T includes a dedicated hibernation module supporting sub-1 µA retention current, battery-backed 256-byte RAM, calendar-mode RTC, and external wake-up pins. It also supports sleep, deep-sleep, and hibernate modes with configurable wake sources including GPIO, RTC alarm, and CAN activity. These features make LM3S2918-IQC50-A2T well-suited for long-life battery-powered nodes in remote monitoring and telemetry systems.
Is the LM3S2918-IQC50-A2T pin-compatible with other Stellaris LM3S devices?
No, the LM3S2918-IQC50-A2T is not universally pin-compatible across the LM3S family. While it shares the 100-pin LQFP package with several variants (e.g., LM3S2678, LM3S2776), pin functions differ significantly - especially for CAN, hibernation, and analog peripherals. For example, LM3S2678 lacks CAN0RX/CAN0TX pins entirely. Therefore, LM3S2918-IQC50-A2T requires its own layout and cannot be substituted without board-level redesign.
What development tools and software support are available for the LM3S2918-IQC50-A2T?
Texas Instruments provided full StellarisWare Peripheral Driver Library, Code Composer Studio IDE support, and evaluation kits like the EK-LM3S2918. The LM3S2918-IQC50-A2T is supported by ARM Keil MDK, IAR Embedded Workbench, and open-source GCC toolchains via LM3S-specific startup files and linker scripts. TI's discontinued but publicly archived StellarisWare remains functional for LM3S2918-IQC50-A2T firmware development and debugging via JTAG/SWD interfaces.
LM3S2918-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:
- 52
- 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2918-IQC50-A2T FAQ
1.How can I place an order for LM3S2918-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2918-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 LM3S2918-IQC50-A2T reliable?
The price and inventory of LM3S2918-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 LM3S2918-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2918-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2918-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2918-IQC50-A2T?
LM3S2918-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2918-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 LM3S2918-IQC50-A2T?
For technical support, including LM3S2918-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2918-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S2918-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2918-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 LM3S2918-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2918-IQC50-A2T?
All LM3S2918-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2918-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 LM3S2918-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2918-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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