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Texas Instruments LM3S611-IQN50-C2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S611-IQN50-C2T Stellaris ARM Cortex-M3 MCU, 50 MHz, 32 KB Flash

MPNLM3S611-IQN50-C2T
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 600 series LM3S611-IQN50-C2T, 32-Bit Single-Core MCU, 50MHz, 32KB Flash, 8K x 8 RAM, 48-LQFP, -40°C~85°C.

$8.6000Ref. price · indicative, final on quote
Texas Instruments LM3S611-IQN50-C2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S611-IQN50-C2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 600
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size8K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, Microwire, SPI, SSI, UART/USART
Number of i (O)32
Core processorARM® Cortex®-M3
Case48-LQFP
Data convertersA/D 4x10b
Program memory size32KB (32K x 8)

Product details

The Texas Instruments LM3S611-IQN50-C2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris® 600 series, clocked at 50 MHz with 32 KB of Flash and 8 KB of RAM. The part is housed in a 48-LQFP package (7x7 mm) and rated for the industrial temperature range of -40°C to 85°C, making it suitable for factory automation, motor control, and embedded control panels where a moderate-performance Cortex-M3 core is sufficient.

At 50 MHz, this Cortex-M3 executes single-cycle multiply and hardware divide, enough for PID loops running at a few kHz. The 8 KB RAM is the tighter resource: a full TCP/IP stack won't fit, but a lightweight serial protocol handler will.

Obsolete — sourcing reality for the BOM line

The LM3S611-IQN50-C2T is officially obsolete (EOL). No last-time-buy window remains open from the manufacturer.

Frequently asked questions

What is the replacement for LM3S611-IQN50-C2T?

There is no pin-compatible drop-in replacement from TI's current portfolio. A board redesign is required to migrate to a newer Cortex-M4F device such as the TM4C123GH6PM, which offers more Flash, RAM, and peripherals but uses a different package and pinout.

What is LM3S611-IQN50-C2T's listed speed?

The LM3S611-IQN50-C2T is rated for a 50 MHz core speed on the ARM Cortex-M3 processor.