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Texas Instruments LM3S8538-EQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S8538-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz

MPNLM3S8538-EQC50-A2T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 8000 series LM3S8538-EQC50-A2T, 32-bit single-core ARM Cortex-M3 at 50MHz, 96KB FLASH, 64KB SRAM, 2.25V–2.75V supply, 100-LQFP, -40°C to 105°C, CANbus/Ethernet/I²C/SPI/USART, Tape & Reel.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S8538-EQC50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 8000
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
ConnectivityCANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)36
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size96KB (96K x 8)

Product details

The LM3S8538-EQC50-A2T: This MCU targets applications that need both a real-time control core and a rich peripheral set—think industrial gateways, building automation controllers, motor drives with CANopen or EtherCAT bridges, and vehicle telematics units where the on-chip CANbus and Ethernet MAC reduce BOM count.

Having both CAN and Ethernet on a single die at 50 MHz means this part can serve as a protocol bridge in a distributed control network without an external communication co-processor. The 36 general-purpose I/O lines, plus an 8-channel 10-bit ADC, cover sensor readout and actuator drive for most panel-mount or DIN-rail equipment.

Lifecycle reality: obsolete, not dead

Texas Instruments has ended production of this Stellaris family MCU.

Memory and performance for the task

The 50 MHz Cortex-M3 runs at 50 MHz. The 64 KB SRAM and 96 KB FLASH support a TCP/IP stack and application data. The internal oscillator reduces external component count.

The 100-LQFP (14x14 mm) package is a standard quad flat pack.

Frequently asked questions

Does LM3S8538-EQC50-A2T have ethernet?

Yes, the LM3S8538-EQC50-A2T includes an Ethernet MAC controller on-chip, enabling direct connection to 10/100 Ethernet networks with an external PHY.

What is the replacement for LM3S8538-EQC50-A2T?

Texas Instruments has not listed an official replacement for this obsolete Stellaris MCU. For new designs, consider the TM4C series (Cortex-M4F) from TI, but verify pin-compatibility and peripheral mapping against the LM3S8538 footprint.