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Texas Instruments LM3S310-EQN25-C2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S310-EQN25-C2 Stellaris ARM Cortex-M3 MCU, 25 MHz

MPNLM3S310-EQN25-C2
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series LM3S310-EQN25-C2, 32-Bit Single-Core MCU, 25MHz, 16KB FLASH, 4K x 8 RAM, 36 I/O, 48-LQFP, -40°C~105°C.

Texas Instruments LM3S310-EQN25-C2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S310-EQN25-C2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 300
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed25MHz
PackageTray
RAM size4K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityMicrowire, SPI, SSI, UART/USART
Number of i (O)36
Core processorARM® Cortex®-M3
Case48-LQFP
Program memory size16KB (16K x 8)

Product details

The LM3S310-EQN25-C2: At 25 MHz the Cortex-M3 core delivers adequate throughput for UART polling, simple PWM generation, and sensor readout loops. It is not a high-speed control or DSP-class part — the 16 KB Flash limits firmware complexity to a single control loop or a basic protocol stack. For designs that need more headroom, a pin-compatible Stellaris sibling with higher Flash density and clock speed would be the natural upgrade path.

The LM3S310-EQN25-C2 is listed as Obsolete. New designs should not target this MCU — instead, evaluate the current-generation Stellaris or Tiva C Series devices for a pin-compatible and software-portable alternative.

Frequently asked questions

Is LM3S310-EQN25-C2 obsolete?

Yes, the LM3S310-EQN25-C2 is listed as Obsolete. It is no longer manufactured by Texas Instruments and is not recommended for new designs.

What is the replacement for LM3S310-EQN25-C2?

Texas Instruments has not published a direct replacement order code for the LM3S310-EQN25-C2. For a pin-compatible upgrade path, evaluate current Stellaris or Tiva C Series devices — these share the same ARM Cortex-M3 core and 48-LQFP footprint, with higher Flash density and clock speeds. Confirm software portability and peripheral compatibility against your application requirements.