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Texas Instruments LM3S328-EQN25-C2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S328-EQN25-C2 Stellaris ARM Cortex-M3 MCU, 25 MHz

MPNLM3S328-EQN25-C2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 300 series 32-bit MCU, LM3S328-EQN25-C2, 25 MHz, 16 KB Flash, 4K x 8 RAM, 28 I/O, 48-LQFP, -40°C to 105°C.

$5.8900Ref. price · indicative, final on quote
Texas Instruments LM3S328-EQN25-C2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S328-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
ConnectivityI²C, Microwire, SPI, SSI, UART/USART
Number of i (O)28
Core processorARM® Cortex®-M3
Case48-LQFP
Data convertersA/D 8x10b
Program memory size16KB (16K x 8)

Product details

25 MHz ARM Cortex-M3 with 16 KB Flash — what you get

The LM3S328-EQN25-C2: It is a 32-bit single-core device in a 48-LQFP package with 28 GPIOs. The part includes an 8-channel 10-bit ADC, internal oscillator, and a peripheral set covering I²C, SPI, SSI, Microwire, and UART/USART interfaces. Brown-out detect, POR, PWM, and WDT are integrated.

Obsolete — last-time-buy cycle closed

Obsolete product status. Texas Instruments has ended production; the last-time-buy window is closed. Sourcing is limited to the surplus and broker channel.

No official second source — broker channel only

No pin-compatible or functional second source is listed for the LM3S328-EQN25-C2. The Stellaris 300 series has no direct cross-reference from another manufacturer.

48-LQFP — board-fit and handling

48-LQFP surface-mount device with a 7x7 mm body. Ships in tray form.

Frequently asked questions

What is the replacement for LM3S328-EQN25-C2?

No official replacement or successor order code is recorded for the LM3S328-EQN25-C2. A redesign to a current-generation ARM Cortex-M3 or M4 MCU from TI or another vendor is required for new production. The Stellaris 300 series has no direct pin-compatible drop-in.