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Texas Instruments LM3S308-IGZ25-C2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S308-IGZ25-C2 Stellaris ARM Cortex-M3 MCU, 25 MHz

MPNLM3S308-IGZ25-C2
End of Life

Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series LM3S308-IGZ25-C2, 32-Bit Single-Core MCU, 25MHz, 16KB FLASH, 4K x 8 RAM, 48-VFQFN Exposed Pad, -40°C~85°C.

Texas Instruments LM3S308-IGZ25-C2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3S308-IGZ25-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~85°C(TA)
Speed25MHz
PackageTray
RAM size4K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, Microwire, SPI, SSI, UART/USART
Number of i (O)28
Core processorARM® Cortex®-M3
Case48-VFQFN Exposed Pad
Data convertersA/D 8x10b
Program memory size16KB (16K x 8)

Product details

The LM3S308-IGZ25-C2: With 16 KB of program memory and 4 KB of RAM, firmware must be lean. The 25 MHz Cortex-M3 core handles control loops and protocol stacks efficiently, but the memory ceiling means no heavy RTOS or large data buffers. Typical applications include I²C or SPI sensor readout, UART-to-SPI bridging, PWM generation for LED or motor drivers, and simple keypad-and-display interfaces.

Temperature grade and environment — industrial range without qualification overhead

It is not AEC-Q100 qualified, so it is not intended for automotive under-hood or chassis domains.

This part is still a valid choice for both new production runs and ongoing repair of existing Stellaris-based designs.

Frequently asked questions

Can LM3S308-IGZ25-C2 replace a failed LM3S308-IGZ25-C1 without PCB changes?

Yes, the -C2 variant is pin-compatible and package-identical to the -C1. The 48-VFQFN footprint and all electrical ratings are the same. Firmware may need a minor update if the revision changes any register behavior, but the hardware swap is a direct drop-in.

What development tools are required for LM3S308-IGZ25-C2?

The Stellaris 300 series uses the ARM Cortex-M3 core, so any standard ARM debug probe (JTAG/SWD) works. TI's Code Composer Studio or Keil MDK-ARM are common IDEs.