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Texas Instruments LM3S2918-IBZ50-A2T
- Part No.:
- LM3S2918-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2918-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,134
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Product details
Overview
LM3S2918-IBZ50-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 (up to 1 MSPS), and hibernation module for ultra-low-power operation. It operates at 50 MHz and targets industrial motor control, building automation, and embedded CAN networks.
For engineers reviewing the LM3S2918-IBZ50-A2T datasheet, LM3S2918-IBZ50-A2T pinout, LM3S2918-IBZ50-A2T application, or LM3S2918-IBZ50-A2T equivalent, key selection criteria include its 50 MHz Cortex-M3 core, on-chip CAN interface, hibernation power management, and support for real-time deterministic control in space-constrained industrial nodes.
Technical Context
The LM3S2918-IBZ50-A2T integrates an ARM Cortex-M3 processor core with NVIC, SysTick, and MPU, enabling deterministic interrupt handling and memory protection. Its system-level peripherals include a hibernation module with RTC, battery-backed memory, and wake-on-external-event capability.
It features dual UARTs with IrDA/SIR support, two SSI interfaces, one I²C master/slave, and a dedicated CAN 2.0B controller with 32 message objects. The analog subsystem includes a 12-bit, 1-MSPS ADC with four sample sequencers and internal temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz - enables real-time deterministic execution with Thumb-2 instruction set and hardware divide. |
| Flash Memory | 256 KB - sufficient for complex firmware with bootloader, communication stacks, and application logic. |
| SRAM | 64 KB - supports large data buffers, RTOS task stacks, and CAN message object storage. |
| ADC | 12-bit, 1 MSPS, 8-channel - suitable for high-fidelity motor current sensing and analog sensor acquisition. |
| CAN Interface | CAN 2.0B compliant, 32 message objects - provides robust, fault-tolerant fieldbus connectivity without external transceiver logic. |
| Hibernation Module | RTC + battery-backed RAM + wake-on-pin/RTC - reduces active power to µA range while retaining state and timekeeping. |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments without derating. |
| Package | 100-pin LQFP (14 × 14 mm) - standard surface-mount footprint compatible with automated assembly and thermal management. |
Pinout & Package
LM3S2918-IBZ50-A2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package 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 | Dedicated domains for digital logic (VDD), analog (VDDA), and core (VDDC) enable noise isolation and stable ADC/CPU operation. |
| GND, GNDA, GNDC | Ground returns | Separate ground planes minimize coupling between analog, digital, and core circuits. |
| PA0–PA7, PB0–PB7, etc. | GPIO banks A–G | Configurable as digital I/O, peripheral alternate functions (UART, SSI, I²C, CAN TX/RX), or analog inputs. |
| CAN0RX / CAN0TX | CAN physical layer interface | Direct connection to external CAN transceiver; supports bit rates up to 1 Mbps with programmable timing. |
| HIBERNATE | Hibernation control signal | Active-low input that initiates hibernate mode; also serves as wake source when asserted externally. |
| RTCCLK | Real-time clock input | Accepts 32.768 kHz crystal or external clock for accurate timekeeping during hibernation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | Eliminates need for external CAN protocol IC; supports full mailbox arbitration and error handling in hardware. |
| Hibernation Module with RTC | Enables <1 µA sleep current with timekeeping and wake-on-event-critical for battery-powered remote nodes. |
| 12-bit, 1-MSPS ADC with Sequencing | Four independent sample sequencers allow concurrent acquisition of multiple sensors without CPU intervention. |
| ARM Cortex-M3 with MPU | Memory Protection Unit isolates firmware tasks and prevents errant code from corrupting critical memory regions. |
| Dual UART with IrDA/SIR Support | Enables direct infrared communication and legacy serial diagnostics without additional PHY components. |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC actuators using current feedback and position sensing. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, and CAN-based command/response messaging. Use Value: Deterministic 50 MHz Cortex-M3 execution and integrated CAN reduce BOM count and latency versus discrete MCU + CAN controller solutions. | Use Scenario: Distributed sensor node monitoring temperature, occupancy, and lighting status across office floors. IC Role / Device Role / Timing Role: Sensor data aggregation, local decision logic, and periodic CAN bus reporting with low-power hibernation between updates. Use Value: Hibernation module achieves <1 µA standby current, extending battery life to multi-year intervals without maintenance. |
| Factory Floor CAN Gateway | Embedded Diagnostic Tool |
Use Scenario: Protocol translation between Modbus RTU devices and higher-layer CANopen network. IC Role / Device Role / Timing Role: Dual UART + CAN interface coordination with real-time packet buffering and timestamping. Use Value: On-chip 64 KB SRAM accommodates dual-protocol message queues and firmware stack without external memory. | Use Scenario: Handheld tool for reading ECU diagnostic trouble codes (DTCs) via vehicle CAN bus. IC Role / Device Role / Timing Role: CAN message parsing, UART-to-PC communication, and user interface control via GPIO-driven LEDs/buttons. Use Value: Integrated hibernation and RTC enable instant wake-on-button press with persistent session time stamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tiva C TM4C123GH6PM | Successor device with same Cortex-M4F core, enhanced peripherals (USB, Ethernet MAC), 256 KB flash, but no hibernation module. | Lacks battery-backed RTC and sub-µA hibernate mode; requires external RTC for timekeeping during deep sleep. | Select when USB host/device or floating-point math is required; not drop-in for hibernation-critical designs. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM, CAN 2.0B, but no integrated hibernation or battery-backed RAM. | Requires external RTC and backup power circuitry to replicate hibernation functionality. | Choose for higher clock speed and larger flash; verify external power management design for low-power use cases. |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2918-IBZ50-A2T uniquely delivers certified sub-µA hibernation with integrated RTC and battery-backed memory-enabling true zero-maintenance, long-life deployments where power autonomy is non-negotiable.
Availability
LM3S2918-IBZ50-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation, factory floor gateways, and embedded diagnostic tools requiring stable component supply and long-term lifecycle support.
Supply support for LM3S2918-IBZ50-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 90 years of innovation in industrial, automotive, and communications markets.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time industrial control applications requiring integrated CAN, low-power hibernation, and deterministic ARM Cortex-M3 performance-prioritizing reliability and peripheral integration over raw clock speed.
FAQ
What is the maximum operating frequency of the LM3S2918-IBZ50-A2T?
The LM3S2918-IBZ50-A2T operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL or external crystal oscillator. This frequency is specified under industrial temperature conditions (–40°C to +85°C) and supports deterministic real-time execution of control loops and communication stacks. The LM3S2918-IBZ50-A2T maintains full peripheral functionality-including CAN, ADC, and UART-at this rated speed.
Does the LM3S2918-IBZ50-A2T include a hardware CAN controller?
Yes, the LM3S2918-IBZ50-A2T integrates a fully compliant CAN 2.0B controller with 32 message objects, programmable bit timing, and hardware-based message filtering and arbitration. It supports bit rates up to 1 Mbps and requires only an external CAN transceiver for physical layer interfacing. The LM3S2918-IBZ50-A2T's CAN module operates independently of the CPU during message transmission and reception.
What power-saving features does the LM3S2918-IBZ50-A2T offer?
The LM3S2918-IBZ50-A2T includes a dedicated hibernation module supporting sub-1 µA sleep current with retained RTC, battery-backed RAM (2 KB), and wake-on-external-pin or RTC alarm. It also supports sleep, deep-sleep, and shutdown modes managed by the Cortex-M3 SCB. The LM3S2918-IBZ50-A2T's hibernation capability eliminates the need for external RTC or backup power circuitry in battery-operated nodes.
Is the LM3S2918-IBZ50-A2T pin-compatible with other Stellaris LM3S devices?
No, the LM3S2918-IBZ50-A2T is not universally pin-compatible across the Stellaris LM3S family. While it shares the 100-pin LQFP package with some variants (e.g., LM3S8962), pin assignments for peripherals like CAN, ADC, and hibernation signals differ. The LM3S2918-IBZ50-A2T has unique pin mappings documented in Section 5.1 of the SPMS058I datasheet and requires board-level validation for substitution.
What development tools support the LM3S2918-IBZ50-A2T?
The LM3S2918-IBZ50-A2T is supported by Texas Instruments' StellarisWare Peripheral Driver Library, Code Composer Studio v5–6, and IAR Embedded Workbench for ARM. Evaluation is enabled via the Stellaris DK-LM3S9B96 development kit, which includes JTAG debugging, onboard CAN transceivers, and expansion headers. The LM3S2918-IBZ50-A2T requires no external debug hardware beyond standard JTAG/SWD interfaces.
LM3S2918-IBZ50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not 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-IBZ50-A2T FAQ
1.How can I place an order for LM3S2918-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2918-IBZ50-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-IBZ50-A2T reliable?
The price and inventory of LM3S2918-IBZ50-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-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2918-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2918-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2918-IBZ50-A2T?
LM3S2918-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2918-IBZ50-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-IBZ50-A2T?
For technical support, including LM3S2918-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2918-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S2918-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2918-IBZ50-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-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2918-IBZ50-A2T?
All LM3S2918-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2918-IBZ50-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-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S2918-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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