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Texas Instruments LM3S6730-EQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S6730-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash, Ethernet

MPNLM3S6730-EQC50-A2
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 6000 series LM3S6730-EQC50-A2, 32-Bit Single-Core, 50MHz, 128KB (128K x 8) FLASH, 64K x 8 RAM, Ethernet/IrDA/SPI/SSI/UART/USART, 46 I/O, 2.25V~2.75V, -40°C~105°C, 100-LQFP (14x14).

Texas Instruments LM3S6730-EQC50-A2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6730-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 size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityEthernet, 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 Texas Instruments LM3S6730-EQC50-A2 is a 32-bit ARM Cortex-M3 MCU from the Stellaris series, clocked at 50 MHz with 128 KB of Flash and 64 KB of RAM.

EOL notice — what this means for your BOM

50 MHz core and Ethernet — fit for the application

The 50 MHz Cortex-M3 core delivers enough throughput to run a lightweight TCP/IP stack alongside peripheral control — think Modbus TCP gateway, remote I/O node, or a simple web-server interface on an industrial panel. The integrated Ethernet PHY saves a separate transceiver chip and the associated PCB routing, which matters in the 100-LQFP package where board space is tight.

Frequently asked questions

What is the replacement for LM3S6730-EQC50-A2?

Texas Instruments has not published an official replacement for this exact order code. The Stellaris family was succeeded by the Tiva C series, but those are not pin-compatible. For a drop-in alternative, check other LM3S6730 suffix variants in the same 100-LQFP footprint — though they share the same EOL status.

Does LM3S6730-EQC50-A2 support Ethernet?

Yes, it integrates an Ethernet MAC+PHY controller, along with IrDA, Microwire, SPI, SSI, and UART/USART serial interfaces.

Where can I buy LM3S6730-EQC50-A2?

This obsolete part is not available through standard authorized distribution. It is sourced and quoted to order against an RFQ through independent channels, with availability and current pricing confirmed at quote time.