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Texas Instruments LM3S2911-IQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2911-IQC50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S2911-IQC50-A2T
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Texas Instruments Stellaris ARM Cortex-M3S 2000 series LM3S2911-IQC50-A2T, 32-bit MCU, 50 MHz, 256 KB Flash, 64 KB RAM, CAN/I²C/SPI/UART, 60 I/O, 100-LQFP, -40°C to 85°C.

$15.1109Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2911-IQC50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 2000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)60
Core processorARM® Cortex®-M3
Case100-LQFP
Program memory size256KB (256K x 8)

Product details

That means TI has signaled it won't be the target for future spin-tapes or volume allocations — though it remains available through the independent channel for existing production runs and repair stock. If you're qualifying a new board, you'll want to look at the current Stellaris or TM4C family alternatives; for a repair or a last-production run, this is the exact die you need to match the existing firmware and PCB layout.

The 50 MHz core delivers 1.25 DMIPS/MHz, so about 62.5 DMIPS — enough to run a CANopen stack, a Modbus RTU slave, and a PID loop on a motor drive without breaking a sweat. The internal oscillator means you can skip the external crystal for applications that don't need precision timing, saving two pins and a couple of passives.

Peripherals that matter for industrial and CAN-bus designs

The CAN 2.0B controller is the standout here — it's what separates this part from the general-purpose Cortex-M3 parts that only do UART and SPI. The CANbus interface, combined with the 60 I/O and the PWM and WDT peripherals, makes this a natural fit for industrial control nodes, motor drives, and building automation gateways. The brown-out detect and POR keep the firmware from corrupting Flash on a glitchy supply — a real concern on factory floors with big motors cycling on and off.

Package and temperature grade — fits the industrial panel

If your board lives in a conditioned server room, you've got margin; if it sits next to a furnace or a compressor, you're still inside the rated window.

Frequently asked questions

What is the replacement or equivalent for LM3S2911-IQC50-A2T?

The Stellaris family has evolved into the TM4C series from Texas Instruments, which shares the Cortex-M3 core and peripheral set. A pin-compatible swap would need to be verified against the specific package and supply voltage of this part. For a drop-in replacement on an existing board, the best path is to source the exact LM3S2911-IQC50-A2T through independent distribution.

Is LM3S2911-IQC50-A2T compatible with existing Stellaris software?

Yes — this is a standard Stellaris family part using the ARM Cortex-M3 core.