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Texas Instruments LM3S6611-EQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S6611-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash

MPNLM3S6611-EQC50-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 6000 series MCU, LM3S6611-EQC50-A2, 32-bit single-core at 50 MHz, 128 KB Flash, 32K x 8 RAM, 46 I/O, Ethernet and serial connectivity, 100-LQFP, -40 to 105 °C.

Texas Instruments LM3S6611-EQC50-A2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6611-EQC50-A2 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
PackageTray
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

The part is specified over the -40 to 105 °C industrial temperature range, making it suitable for factory automation, motor drives, outdoor telecom, and embedded control systems that require deterministic response and wired networking.

The 50 MHz Cortex-M3 core provides enough throughput for control loops and protocol stacks without external memory. The 128 KB Flash is sized for mid-complexity firmware — a Modbus TCP stack plus a PID loop fits; a full web server or large data-logging buffer would push the budget. The 32K x 8 RAM supports moderate packet buffering and stack depth for Ethernet communication.

Frequently asked questions

What is the replacement for LM3S6611-EQC50-A2?

There is no official pin-compatible replacement from TI. Newer Stellaris or Tiva C Series parts are not drop-in substitutes; a board redesign is required. For existing BOM lines, the LM3S6611-EQC50-A2 is available on a quoted-to-order basis through independent distribution.

What are the specifications of LM3S6611-EQC50-A2?

The LM3S6611-EQC50-A2 is a 32-bit ARM Cortex-M3 MCU with a 50 MHz core, 128 KB Flash, 32K x 8 RAM, 46 I/O, Ethernet and serial interfaces, in a 100-LQFP package, rated for -40 to 105 °C and 2.25 V to 2.75 V supply.

Where can I buy LM3S6611-EQC50-A2 available via RFQ confirmation?

The LM3S6611-EQC50-A2 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a real-time response.

Can LM3S6611-EQC50-A2 be replaced with a newer Stellaris part?

No newer Stellaris part is listed as a direct replacement. The Stellaris family has been phased out; TI's Tiva C Series (Cortex-M4F) offers higher performance but requires a different footprint and software port.