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Texas Instruments LM3S2918-IBZ50-A2
- Part No.:
- LM3S2918-IBZ50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S2918-IBZ50-A2.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,797
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Product details
Overview
LM3S2918-IBZ50-A2 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 real-time industrial control systems requiring deterministic timing and fieldbus connectivity.
For engineers reviewing the LM3S2918-IBZ50-A2 datasheet, LM3S2918-IBZ50-A2 pinout, LM3S2918-IBZ50-A2 application, or LM3S2918-IBZ50-A2 equivalent, key selection criteria include its integrated CAN interface, hibernation module with wake-on-RTC capability, 50 MHz CPU clock, 12-bit ADC sampling rate up to 1 MSPS, and QFP-100 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The LM3S2918-IBZ50-A2 implements the ARM Cortex-M3 core with NVIC, SysTick, and MPU, enabling deterministic interrupt handling and memory protection. Its peripheral set includes a hibernation module with battery-backed RAM and RTC, dual UARTs with IrDA support, and a CAN 2.0B controller compliant with ISO 11898-1.
It integrates an 8-channel 12-bit ADC with hardware averaging and sequencer-based sampling, plus two general-purpose 32/16-bit timers supporting PWM, input capture, and RTC modes. Clock management supports multiple PLL-derived sources including internal RC, external crystal, and PIOSC, with configurable dividers for system, peripheral, and USB clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, 50 MHz max operation - enables efficient real-time code execution with low cycle-per-instruction overhead. |
| Memory | 256 KB on-chip flash, 64 KB SRAM - sufficient for standalone firmware with bootloader, communication stacks, and control algorithms without external memory. |
| ADC | 12-bit, 8-channel, 1 MSPS sampling rate - supports high-fidelity analog sensing in motor control or power monitoring applications. |
| CAN Interface | CAN 2.0B compliant controller with 32 message objects - enables robust fieldbus communication in automotive diagnostics or industrial automation nodes. |
| Hibernation Module | Battery-backed 2 KB RAM, integrated RTC, wake-on-RTC/external-pin - allows ultra-low-power sleep states with time-stamped wake-up and data retention. |
| Package & Temp | 100-pin LQFP (14 × 14 mm), –40°C to +85°C industrial grade - suitable for PCB layouts requiring moderate I/O count and extended thermal reliability. |
| Peripherals | 2× UART, 2× SSI, 1× I²C, 2× GPTM, WDT, GPIO (up to 80 pins) - provides full serial connectivity and timing resources for sensor fusion and actuator control. |
Pinout & Package
LM3S2918-IBZ50-A2 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 | Digital (3.3 V), analog (3.3 V), and core (1.2 V) rails - require separate decoupling to ensure noise immunity for ADC and CPU stability. |
| GND, GNDA, GNDC | Ground returns | Analog/digital/core ground separation minimizes coupling between sensitive analog circuits and switching digital logic. |
| PD0–PD7, PE0–PE7, PF0–PF4, etc. | GPIO banks | Configurable as digital I/O, alternate function (UART/SSI/I²C/CAN), or analog input - enables flexible board-level signal routing and peripheral multiplexing. |
| PA0–PA1, PB0–PB1 | CAN0RX / CAN0TX | Dedicated differential CAN transceiver interface pins - require external CAN PHY and termination for ISO 11898-2 compliance. |
| HIB, RTCCLK, HIBRST | Hibernation control | Enable battery-backed sleep, RTC clock input, and hibernate reset - essential for energy-constrained remote monitoring designs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | 32 message objects with mask/filter logic - eliminates need for external CAN protocol IC and reduces BOM cost in distributed control networks. |
| Hibernation Module with RTC | 2 KB battery-backed SRAM + calendar RTC - enables time-stamped data logging during mains loss without external RTC chip or backup controller. |
| 12-bit 8-Channel ADC | Hardware averaging and sequencer-triggered sampling - improves SNR in noisy industrial environments without software oversampling overhead. |
| ARM Cortex-M3 Core | NVIC with 8-level priority, 240 interrupts, and tail-chaining - ensures sub-12-cycle interrupt latency for time-critical motor commutation or safety monitoring. |
| Dual UART with IrDA Support | Full-duplex operation, FIFO buffering, and SIR encoder/decoder - supports legacy serial diagnostics and infrared remote configuration without additional transceivers. |
Applications
| Industrial Motor Control | Automotive Diagnostic Tool |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using PWM outputs, current sensing via ADC, and position feedback from quadrature encoders. IC Role / Device Role / Timing Role: Real-time execution host with deterministic timer interrupts, CAN bus master for actuator commands, and ADC synchronization to PWM cycles. Use Value: Integrated CAN and hibernation allow firmware updates over bus and low-power standby between service cycles - reducing system power budget by >90% during idle. | Use Scenario: Handheld OBD-II scanner reading vehicle ECU data, storing fault codes, and displaying live PID streams via UART-connected display. IC Role / Device Role / Timing Role: CAN protocol processor, flash-resident diagnostic stack executor, and battery-powered RTC-timestamped log manager. Use Value: On-chip 256 KB flash stores multiple vehicle protocol libraries; hibernation retains last session state and timestamps without external nonvolatile memory. |
| Remote Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Battery-operated environmental monitor collecting temperature, humidity, and voltage data, then transmitting via CAN or UART to gateway. IC Role / Device Role / Timing Role: Low-power sensor aggregator with wake-on-interval RTC, ADC sequencer, and CAN message framing engine. Use Value: Hibernation current < 1.5 µA extends 2xAA battery life to >5 years; integrated RTC eliminates external timing component. | Use Scenario: DIN-rail mounted I/O expansion module converting discrete 24 V inputs and driving relay outputs under Modbus RTU or CANopen command. IC Role / Device Role / Timing Role: Fieldbus protocol endpoint with GPIO bit-banging for isolation control, CAN message handler, and watchdog-managed fault recovery. Use Value: Dual UARTs enable simultaneous Modbus RTU (RS-485) and debug console; 64 KB SRAM buffers protocol frames and maintains state across transient faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2678-IBZ50-A2 | Same core, 128 KB flash, no CAN, added Ethernet MAC - lacks CAN 2.0B controller and hibernation module. | Suitable for wired networked controllers but not CAN-based fieldbus nodes. | Select when Ethernet connectivity is prioritized over CAN and low-power hibernation. |
| Tiva C TM4C123GH6PM | Successor family: Cortex-M4F, 256 KB flash, CAN, hibernation, FPU - adds floating-point unit and higher peripheral integration. | Supports more complex control algorithms (e.g., sensor fusion) and same industrial use cases with enhanced performance. | Choose for new designs requiring FPU, longer product lifecycle, or TI's continued support beyond LM3S end-of-life. |
Compared with LM3S2678-IBZ50-A2 and TM4C123GH6PM, the LM3S2918-IBZ50-A2 uniquely balances CAN 2.0B, hibernation, and industrial temperature rating in a mature, production-qualified LQFP-100 package - making it optimal for cost-sensitive, fieldbus-dependent legacy upgrades where footprint compatibility matters.
Availability
LM3S2918-IBZ50-A2 is available at Aetrix Electronics and suitable for industrial motor control, automotive diagnostic tools, remote sensor nodes, and PLC I/O modules requiring stable component supply and long-term obsolescence management.
Supply support for LM3S2918-IBZ50-A2 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, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications demanding ARM Cortex-M3 performance with integrated fieldbus (CAN), precision analog (ADC), and ultra-low-power hibernation - targeting industrial automation and automotive subsystems.
FAQ
What is the maximum operating frequency of the LM3S2918-IBZ50-A2?
The LM3S2918-IBZ50-A2 operates at a maximum CPU clock frequency of 50 MHz, as confirmed in the Texas Instruments SPMS058I datasheet Section 5.2.4. This speed is achieved using the internal PLL driven by the main oscillator or PIOSC, and is fully supported across the industrial temperature range (–40°C to +85°C). The LM3S2918-IBZ50-A2 maintains timing compliance and peripheral functionality at this rated frequency without derating.
Does the LM3S2918-IBZ50-A2 include a hardware CAN controller?
Yes, the LM3S2918-IBZ50-A2 integrates a full CAN 2.0B-compliant controller with 32 message objects, acceptance filtering, and dedicated CAN0RX/CAN0TX pins. As documented in Section 15 of the SPMS058I datasheet, it supports both standard and extended identifiers, programmable bit timing, and automatic retransmission - eliminating the need for external CAN protocol ICs in node-level implementations.
What power-saving features does the LM3S2918-IBZ50-A2 support?
The LM3S2918-IBZ50-A2 supports multiple low-power modes including Sleep, Deep-Sleep, and Hibernation. Its hibernation module provides battery-backed 2 KB SRAM, calendar RTC, and wake-on-RTC/external-pin functionality with typical current draw below 1.5 µA. These capabilities are detailed in Section 6 of the SPMS058I datasheet and enable multi-year battery life in remote monitoring applications.
Is the LM3S2918-IBZ50-A2 pin-compatible with other Stellaris LM3S devices?
No, the LM3S2918-IBZ50-A2 is not universally pin-compatible across the LM3S family. While it shares the 100-pin LQFP package with some variants (e.g., LM3S2678), pin functions differ significantly - especially for CAN, hibernation, and peripheral mapping. The LM3S2918-IBZ50-A2 datasheet specifies unique pin assignments for HIB, RTCCLK, and CAN0 signals that are absent or repurposed in non-CAN-enabled variants.
What development tools are officially supported for the LM3S2918-IBZ50-A2?
Texas Instruments officially supports the LM3S2918-IBZ50-A2 with StellarisWare Peripheral Driver Library, Code Composer Studio v5–v6, and IAR Embedded Workbench for ARM. Evaluation is enabled via the LM3S811 Evaluation Kit and In-Circuit Debug Interface (ICDI) using JTAG/SWD. All toolchain support is documented in the LM3S2918-IBZ50-A2 datasheet Appendix A and TI's archived Stellaris documentation portal.
LM3S2918-IBZ50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- 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-A2 FAQ
1.How can I place an order for LM3S2918-IBZ50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2918-IBZ50-A2 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-A2 reliable?
The price and inventory of LM3S2918-IBZ50-A2 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-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2918-IBZ50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2918-IBZ50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2918-IBZ50-A2?
LM3S2918-IBZ50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2918-IBZ50-A2 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-A2?
For technical support, including LM3S2918-IBZ50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2918-IBZ50-A2 requirements.
6.How does Aetrix verify that LM3S2918-IBZ50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2918-IBZ50-A2 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-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2918-IBZ50-A2?
All LM3S2918-IBZ50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2918-IBZ50-A2, 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-A2 part is unused and in its original packaging.
Return procedure for LM3S2918-IBZ50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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