Skip to main content
Log in
Texas Instruments LM3S6611-EQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S6611-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz

MPNLM3S6611-EQC50-A2T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 6000 series, LM3S6611-EQC50-A2T, 32-bit single-core MCU at 50MHz, 128KB Flash, 32KB RAM, Ethernet/I²C/SPI/SSI/UART, 46 I/O, 2.25V–2.75V supply, -40°C to 105°C, 100-LQFP, Tape & Reel.

Texas Instruments LM3S6611-EQC50-A2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6611-EQC50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 6000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~105°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityEthernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)46
Core processorARM® Cortex®-M3
Case100-LQFP
Program memory size128KB (128K x 8)

Product details

What the LM3S6611-EQC50-A2T brings to the board

The 32 KB SRAM is tight for large packet buffers — budget around 16 KB for the Ethernet stack and leave the rest for application data. The 128 KB Flash can hold a modest RTOS kernel, the stack, and application code. If you need more memory headroom, the Stellaris family includes pin-compatible parts with larger Flash and RAM, though you will want to check the exact pinout.

Obsolete — sourcing reality for LM3S6611-EQC50-A2T

There is no official TI successor listed for this part; if you need a production-continuity alternative, look at the Stellaris family's later-generation devices or a pin-compatible sibling from the same series — but verify the peripheral set and memory match your firmware image.

Package and temperature — board-fit details

Frequently asked questions

What is the replacement for LM3S6611-EQC50-A2T?

There is no official TI successor listed for this exact order code. Within the Stellaris ARM Cortex-M3S 6000 series, parts like the LM3S6911 share the same core and many peripherals, but you must compare the memory sizes, I/O count, and package pinout to confirm fit for your firmware and board.

Where can I buy LM3S6611-EQC50-A2T?

Submit an RFQ for current availability and pricing — stock and price are confirmed at quote time.