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Texas Instruments LM3S2608-EQC50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2608-EQC50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S2608-EQC50-A2T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 2000 series LM3S2608-EQC50-A2T, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 32K x 8 RAM, CAN/I²C/SPI/UART/SSI, 52 I/O, 100-LQFP, -40°C to 105°C, 2.25 V to 2.75 V supply.

Texas Instruments LM3S2608-EQC50-A2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2608-EQC50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 2000
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 size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)52
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size128KB (128K x 8)

Product details

The Texas Instruments LM3S2608-EQC50-A2T is a Stellaris ARM Cortex-M3S 2000 series microcontroller built around a 32-bit ARM Cortex-M3 core clocked at 50 MHz. The 100-LQFP package (14x14 mm) provides 52 GPIOs, enough for a mixed-signal control board with parallel LCD or keypad matrix.

That means the board's LDO or DC-DC must hold the rail within 200 mV of 2.5 V, which rules out a simple 3.3 V rail and a series resistor. Plan for a dedicated 2.5 V regulator with ±10% tolerance.

Texas Instruments has ended production; no last-time-buy window remains open through the factory.

Frequently asked questions

Is LM3S2608-EQC50-A2T obsolete?

Yes, the LM3S2608-EQC50-A2T is listed as Obsolete. Texas Instruments has discontinued production, and no factory last-time-buy is active. The part is available only through independent distribution and surplus channels.

What is a direct replacement for LM3S2608-EQC50-A2T?

No official direct replacement or successor order code is listed by Texas Instruments for this exact variant. A form-fit-function replacement would require evaluating a newer Stellaris or TM4C series MCU with similar 50 MHz Cortex-M3 core, 128 KB Flash, 32 KB RAM, and the same 100-LQFP footprint, but a full qualification cycle is needed to validate pin compatibility and peripheral mapping.