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Texas Instruments LM3S1150-EQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1150-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S1150-EQC50-A2
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series, LM3S1150-EQC50-A2, 32-Bit Single-Core MCU, 50MHz, 64KB (64K x 8) FLASH, 16K x 8 RAM, 100-LQFP, -40°C~105°C.

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

Specifications

LM3S1150-EQC50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
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 size16K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
Number of i (O)52
Core processorARM® Cortex®-M3
Case100-LQFP
Program memory size64KB (64K x 8)

Product details

What the 50 MHz core and 64 KB Flash mean for your BOM

The LM3S1150-EQC50-A2: Its 50 MHz core delivers enough throughput for motor-control loops, sensor fusion, and industrial protocol bridging without needing an external DSP. If your firmware image approaches 48 KB compiled, you will be tight on headroom for field-update staging.

Peripheral set for industrial control

The 52 GPIOs give enough headroom for a keypad, display, and a handful of sensors without an external port expander. Internal oscillator means one less BOM line, though a precision crystal is still recommended if you need tight baud-rate accuracy on the UARTs.

TI lists the LM3S1150-EQC50-A2 as obsolete. No last-time-buy window remains open through the factory channel. For legacy BOM lines already in production, we can support bridge buys while you migrate.

Frequently asked questions

Is the LM3S1150-EQC50-A2 obsolete?

Yes, TI lists the LM3S1150-EQC50-A2 as obsolete. For new designs, move to a current-production Stellaris or Tiva-C series MCU. For existing production, we can support last-bridge procurement through the independent channel.