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Texas Instruments LM3S6537-EQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S6537-EQC50-A2T ARM Cortex-M3 MCU, 50 MHz, 96KB Flash, Ethe

MPNLM3S6537-EQC50-A2T
Obsolete

Texas Instruments Stellaris LM3S6537-EQC50-A2T, ARM Cortex-M3 32-bit MCU at 50 MHz, 96KB Flash/64KB RAM, 100-LQFP, Ethernet + full peripheral set, -40 to 105 °C, 2.25–2.75 V supply.

Texas Instruments LM3S6537-EQC50-A2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6537-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 size64K 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)41
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 4x10b
Program memory size96KB (96K x 8)

Product details

The Texas Instruments LM3S6537-EQC50-A2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 6000 series, clocked at 50 MHz. The -40 to 105 °C operating range and 2.25 to 2.75 V supply make it a fit for industrial and networked embedded control where a single-chip Ethernet node is needed without an external PHY.

Ethernet on-chip — no external PHY needed

The integrated Ethernet MAC+PHY saves a PHY chip and magnetics on the BOM. The MAC supports 10/100 Mbps half/full duplex with auto-negotiation.

Industrial temperature grade

The LM3S6537-EQC50-A2T is obsolete per Texas Instruments. No successor part number is listed in the Stellaris family.

Frequently asked questions

What is a direct replacement for LM3S6537-EQC50-A2T?

There is no official pin-compatible replacement from Texas Instruments. The Stellaris family has been discontinued. For a new design, you would need to migrate to a current Cortex-M4 or -M7 MCU with Ethernet, which will require a PCB layout change.

What is LM3S6537-EQC50-A2T's listed speed?

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

What are the operating temperature ranges for LM3S6537-EQC50-A2T?

The device is rated for -40 °C to 105 °C, making it suitable for industrial and automotive under-hood environments.