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LM3S2965-IQC50-A2
Texas Instruments
IC MCU 32BIT 256KB FLASH 100LQFP
2202 Pcs New Original In Stock
ARM® Cortex®-M3 Stellaris® ARM® Cortex®-M3S 2000 Microcontroller IC 32-Bit Single-Core 50MHz 256KB (256K x 8) FLASH 100-LQFP (14x14)
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5.0 / 5.0
- (342 Ratings)
LM3S2965-IQC50-A2
Product Overview
1364852
DiGi Electronics Part Number
LM3S2965-IQC50-A2-DGManufacturer
Texas Instruments
LM3S2965-IQC50-A2
Description
IC MCU 32BIT 256KB FLASH 100LQFPInventory
2202 Pcs New Original In Stock
ARM® Cortex®-M3 Stellaris® ARM® Cortex®-M3S 2000 Microcontroller IC 32-Bit Single-Core 50MHz 256KB (256K x 8) FLASH 100-LQFP (14x14)
Quantity
Minimum 1
Minimum 1
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LM3S2965-IQC50-A2 Technical Specifications
Category
Embedded, Microcontrollers
Packaging
Tray
Series
Stellaris® ARM® Cortex®-M3S 2000
Product Status
Not For New Designs
DiGi-Electronics Programmable
Verified
Core Processor
ARM® Cortex®-M3
Core Size
32-Bit Single-Core
Speed
50MHz
Connectivity
CANbus, I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
56
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 4x10b
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
LM3S2965
Datasheet & Documents
Manuals
LM3S2965 Eval Brd User Manual
Manufacturer Product Page
LM3S2965-IQC50-A2 Specifications
HTML Datasheet
LM3S2965-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
-LM3S2965-IQC50
726-1069-DG
-LM3S2965-IQC50-A2-NDR
LM3S2965IQC50A2
296-24903
726-1069
296-24903-NDR
LM3S2965-IQC50
-296-24903-NDR
296-24903INACTIVE
-296-24903-DG
Standard Package
90
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
디지 일렉트로닉스는 고객의 요구에 항상 귀 기울이며 빠르게 대응해줍니다.
de desembre 02, 2025
Der Versandprozess war reibungslos und professionell, ich konnte meine Bestellung problemlos verfolgen.
de desembre 02, 2025
Die Qualität der Produkte bei DiGi Electronics ist konstant, was mir größte Zufriedenheit bringt.
de desembre 02, 2025
Der Versand bei DiGi Electronics war unglaublich schnell, meine Bestellung kam innerhalb von zwei Tagen an. Ich bin begeistert von der zügigen Lieferung!
de desembre 02, 2025
They handle after-sales concerns with professionalism and speed.
de desembre 02, 2025
We appreciate their proactive approach in updating us about new features and support programs.
de desembre 02, 2025
Their rapid response to post-sale queries has built our confidence in their reputation.
de desembre 02, 2025
I admire the uniform quality standards maintained, regardless of when I buy.
de desembre 02, 2025
I receive my urgent orders from DiGi Electronics faster than expected, which is fantastic.
de desembre 02, 2025
I highly recommend DiGi Electronics for anyone seeking quality and affordability.
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Frequently Asked Questions (FAQ)
Can the LM3S2965-IQC50-A2 be safely used as a drop-in replacement for the LM3S8962 in a brownfield industrial control design, and what are the key compatibility risks?
The LM3S2965-IQC50-A2 is not a direct drop-in replacement for the LM3S8962 despite both being Stellaris M3-based MCUs. Key differences include pinout variations in the 100-LQFP package and reduced connectivity options—LM3S2965 lacks USB and some SPI channels present in the LM3S8962. Additionally, the LM3S2965-IQC50-A2 operates at a narrower 2.25V–2.75V supply range, requiring careful review of your existing power architecture. Verify I/O compatibility and revalidate peripheral initialization code, especially for CANbus and QEI, to avoid field reliability issues. Always cross-check the TI device migration guide before substitution.
What are the critical design-in risks when selecting the LM3S2965-IQC50-A2 for a new product given its 'Not For New Designs' status?
The LM3S2965-IQC50-A2's 'Not For New Designs' status from Texas Instruments indicates end-of-life (EOL) trajectory, posing significant supply chain and long-term support risks. While 2133 units are currently in stock at DiGi-Electronics, future availability is uncertain. Designing in this MCU may lead to costly redesigns in 2–3 years. For new designs, TI recommends migrating to Tiva™ C series (e.g., TM4C123GH6PM), which offer pin-to-pin and software-compatible upgrades with enhanced peripherals and extended temperature support. Use LM3S2965-IQC50-A2 only for second-source or repair scenarios.
How can voltage tolerance issues be mitigated when integrating the LM3S2965-IQC50-A2 in mixed-signal systems with 3.3V peripherals?
The LM3S2965-IQC50-A2 has a strict 2.25V–2.75V supply and non-5V-tolerant I/Os, making direct interfacing with 3.3V logic risky. To integrate safely with 3.3V peripherals like sensors or transceivers, use bidirectional level shifters (e.g., TXS0108E) on shared buses such as I2C or SPI. Avoid open-drain I2C lines without pull-ups to 2.5V to prevent overvoltage on the SDA/SCL pins. Additionally, isolate analog and digital grounds with a ferrite bead and ensure stable LDO regulation (e.g., TPS7A47) to maintain supply integrity under dynamic load.
What are the watchdog timer (WDT) configuration pitfalls on the LM3S2965-IQC50-A2 that could lead to unintended MCU resets in safety-critical applications?
The WDT in the LM3S2965-IQC50-A2 must be carefully managed in safety-critical systems. A common pitfall is improper unlock sequence before WDT access, leading to hard faults or unresponsive behavior. Ensure the WDT is serviced within its timeout window using a dedicated high-priority interrupt or background loop—avoid relying solely on main loop execution, which may stall. For robustness, enable the WDT reset output to trigger external supervision and log faults. Consider disabling the WDT in debug mode to avoid complications during development. Always validate timing under worst-case interrupt latency conditions.
How does the 4-channel 10-bit ADC in the LM3S2965-IQC50-A2 perform under EMI in industrial environments, and what PCB layout practices improve signal integrity?
The 4x10b ADC in the LM3S2965-IQC50-A2 lacks onboard oversampling or shielding, making it susceptible to EMI in motor drives or factory automation setups. Maximize accuracy by routing analog traces away from digital clocks and switching regulators, using guard rings around ADC input pins, and placing a dedicated analog ground plane. Employ low-ESR ceramic bypass capacitors (100nF + 1μF) close to AVDD and a ferrite bead on the AVDD supply line. Sample at 1 MSPS or lower and use hardware averaging where possible. For high-noise environments, buffer inputs with rail-to-rail op-amps (e.g., TLV2462) to prevent signal corruption.
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.
LM3S2965-IQC50-A2 CAD Models
Texas Instruments LM3S2965-IQC50-A2 PCB symbols & footprints
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