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LM3S6911-IQC50-A2
Texas Instruments
IC MCU 32BIT 256KB FLASH 100LQFP
7528 Pcs New Original In Stock
ARM® Cortex®-M3 Stellaris® ARM® Cortex®-M3S 6000 Microcontroller IC 32-Bit Single-Core 50MHz 256KB (256K x 8) FLASH 100-LQFP (14x14)
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5.0 / 5.0
- (121 Ratings)
LM3S6911-IQC50-A2
Product Overview
1445712
DiGi Electronics Part Number
LM3S6911-IQC50-A2-DGManufacturer
Texas Instruments
LM3S6911-IQC50-A2
Description
IC MCU 32BIT 256KB FLASH 100LQFPInventory
7528 Pcs New Original In Stock
ARM® Cortex®-M3 Stellaris® ARM® Cortex®-M3S 6000 Microcontroller IC 32-Bit Single-Core 50MHz 256KB (256K x 8) FLASH 100-LQFP (14x14)
Quantity
Minimum 1
Minimum 1
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LM3S6911-IQC50-A2 Technical Specifications
Category
Embedded, Microcontrollers
Packaging
Tray
Series
Stellaris® ARM® Cortex®-M3S 6000
Product Status
Active
DiGi-Electronics Programmable
Verified
Core Processor
ARM® Cortex®-M3
Core Size
32-Bit Single-Core
Speed
50MHz
Connectivity
Ethernet, I2C, IrDA, Microwire, SPI, SSI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
46
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)
Mounting Type
Surface Mount
Supplier Device Package
100-LQFP (14x14)
Package / Case
100-LQFP
Base Product Number
LM3S6911
Datasheet & Documents
Manufacturer Product Page
LM3S6911-IQC50-A2 Specifications
HTML Datasheet
LM3S6911-IQC50-A2-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
3A991A2
HTSUS
8542.31.0001
Additional Information
Other Names
296-24913-NDR
726-1162
726-1162-DG
LM3S6911-IQC50
-LM3S6911-IQC50-A2-NDR
-296-24913-NDR
726-1162INACTIVE
-296-24913-DG
-LM3S6911-IQC50
296-24913
Standard Package
90
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
처음 구매했는데 고객 지원이 정말 훌륭했고, 배송도 신속하게 이루어져서 감탄했어요.
de desembre 02, 2025
빠른 배송과 더불어 사후 서비스가 뛰어나 앞으로도 계속 이용할 생각입니다.
de desembre 02, 2025
저렴한 가격과 뛰어난 고객 지원으로 매번 만족스럽게 거래합니다.
de desembre 02, 2025
I appreciate the quick shipment; it arrived just in time for my urgent need.
de desembre 02, 2025
DiGi Electronics consistently meets our expectations for product reliability and support responsiveness.
de desembre 02, 2025
Delivery was swift and efficient, I appreciate the prompt service.
de desembre 02, 2025
Fast, efficient, and friendly service—every step of the way was handled perfectly.
de desembre 02, 2025
Thanks to their swift shipping, I received my electronics in perfect condition, ready to use.
de desembre 02, 2025
Customer support responses are prompt and detailed, great for peace of mind.
de desembre 02, 2025
From the first use, it’s clear that quality is their top priority.
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Frequently Asked Questions (FAQ)
Can the LM3S6911-IQC50-A2 reliably replace an STM32F103C8T6 in an industrial motor control design, and what are the key integration risks?
The LM3S6911-IQC50-A2 is not a direct drop-in replacement for the STM32F103C8T6 due to significant architectural and peripheral differences. While both are 32-bit ARM Cortex-M3 MCUs, the LM3S6911 operates at 50MHz (vs. 72MHz on the STM32), has only 64KB RAM (vs. 20KB), but includes integrated Ethernet MAC—absent on the STM32F103. Crucially, the LM3S6911 requires a strict 2.5V core supply (2.25–2.75V), whereas the STM32 supports 3.3V operation, necessitating level shifters or power rail redesign. Additionally, pinouts and package footprints differ (100-LQFP vs. 48-LQFP), requiring PCB layout changes. If Ethernet is not needed, the added complexity and cost may outweigh benefits; consider TI’s newer Tiva-C series (e.g., TM4C123GH6PM) for better long-term support and compatibility.
What are the critical reliability concerns when using the LM3S6911-IQC50-A2 in a -40°C automotive environment, despite its rated operating temperature range?
Although the LM3S6911-IQC50-A2 is rated for -40°C to +85°C, real-world automotive applications demand scrutiny beyond datasheet limits. The internal oscillator may drift beyond acceptable margins at temperature extremes, affecting UART, I2C, and Ethernet timing—external crystal use is strongly recommended. Moisture Sensitivity Level (MSL) 3 requires strict handling: boards must be baked if exposed to ambient >30% RH for >168 hours before reflow, or popcorning risk increases. Also, long-term flash endurance (typically 10k cycles) may degrade faster under thermal cycling; implement wear-leveling or move critical data to external EEPROM. Finally, TI’s Stellaris line has limited AEC-Q100 qualification—verify if your supply chain can guarantee traceability and longevity, as this part is not officially automotive-grade.
How does the LM3S6911-IQC50-A2’s lack of EEPROM impact firmware update strategies in field-deployed systems?
The LM3S6911-IQC50-A2 contains no integrated EEPROM, forcing developers to emulate non-volatile storage in its 256KB internal flash—which introduces significant design constraints. Flash sectors (typically 2KB each) wear out after ~10,000 erase/write cycles, making frequent parameter updates (e.g., calibration data, logs) risky without wear-leveling algorithms. This increases firmware complexity and boot time due to block management overhead. For robust field updates, consider adding an external I2C EEPROM (e.g., Microchip 24LC256) or FRAM (e.g., Cypress FM24C16B), which offers near-infinite endurance. Alternatively, reserve a dedicated flash sector with checksum validation and dual-bank firmware images to enable safe rollback—but this halves usable application space. Always validate update logic under brown-out conditions, as partial writes can corrupt emulated EEPROM structures.
Is it safe to run the LM3S6911-IQC50-A2 at 50MHz using only the internal oscillator in a noisy industrial environment with Ethernet traffic?
Running the LM3S6911-IQC50-A2 at full 50MHz speed using the internal oscillator in a noisy industrial setting—especially with active Ethernet communication—introduces significant timing jitter and synchronization risks. The internal RC oscillator has ±1% accuracy at 25°C but degrades to ±3% over the full temperature range, potentially violating Ethernet PHY timing requirements (IEEE 802.3 mandates <±50ppm for 100BASE-TX). This can cause packet loss, CRC errors, or link instability. For reliable operation, always use a high-accuracy external crystal (e.g., 25MHz ±50ppm) with proper load capacitors and grounding. Additionally, ensure clean power delivery: the 2.5V core supply must be filtered with low-ESR capacitors near VDD pins, as noise can modulate oscillator frequency. If cost constraints prevent an external crystal, reduce clock speed and disable Ethernet, or migrate to a more robust MCU like the TM4C129x with integrated PHY and better clocking options.
What design trade-offs should I consider when selecting the LM3S6911-IQC50-A2 over a modern Cortex-M4 alternative like the TM4C123GH6PMI7 for a new embedded control project?
Choosing the LM3S6911-IQC50-A2 over a modern Cortex-M4 like the TM4C123GH6PMI7 involves critical trade-offs in performance, ecosystem, and lifecycle risk. The LM3S6911 lacks DSP instructions, FPU, and runs at half the clock speed (50MHz vs. 80MHz), limiting real-time signal processing capabilities. Its StellarisWare SDK is deprecated—TI now prioritizes TivaWare and Code Composer Studio for newer parts—meaning limited community support and fewer middleware options (e.g., no official FreeRTOS integration). While the LM3S6911 includes Ethernet MAC (absent on base TM4C123 models), the TM4C offers more GPIOs, USB OTG, and better power management. Critically, the LM3S6911 is nearing end-of-life; TI recommends migrating to Tiva-C series. Unless your design absolutely requires legacy Stellaris code reuse or ultra-low-cost Ethernet, the TM4C123GH6PMI7 provides better long-term scalability, tooling, and reliability—especially for new designs where future-proofing matters.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LM3S6911-IQC50-A2 CAD Models
Texas Instruments LM3S6911-IQC50-A2 PCB symbols & footprints
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