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Texas Instruments LM3S2671-IQR50-A0T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2671-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash

MPNLM3S2671-IQR50-A0T
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series MCU, LM3S2671-IQR50-A0T, 32-bit single-core at 50 MHz, 128 KB Flash, 32 KB RAM, 33 I/O, CAN/I²C/SPI/UART, 64-LQFP, -40°C to 85°C.

$19.2504Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2671-IQR50-A0T 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 size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 4x10b
Program memory size128KB (128K x 8)

Product details

The Texas Instruments LM3S2671-IQR50-A0T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris series, clocked at 50 MHz with 128 KB of Flash and 32 KB of SRAM.

Memory budget — 128 KB Flash, 32 KB RAM

128 KB of Flash holds a moderate firmware image: a CANopen stack plus application code fits, but a full TCP/IP stack with a web server will crowd it. The 32 KB SRAM is shared for stack, heap, and DMA buffers — enough for a few hundred bytes of CAN message FIFOs and a modest data logger. The 4-channel 10-bit ADC is adequate for reading potentiometers, current-sense resistors, or temperature sensors at low update rates.

NRND — last-time-buy planning required

Secure a last-time-buy quantity to cover remaining production.

Frequently asked questions

What is LM3S2671-IQR50-A0T's listed speed?

The core runs at 50 MHz, which is the maximum clock frequency for this Cortex-M3 device.

What series does LM3S2671-IQR50-A0T belong to?

It is part of the Stellaris® ARM® Cortex®-M3S 2000 series from Texas Instruments.