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Texas Instruments LM3S1110-EQC25-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1110-EQC25-A2 Texas Instruments Stellaris ARM Cortex-M3

MPNLM3S1110-EQC25-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1110-EQC25-A2, 32-Bit Single-Core MCU, 25MHz, 64KB FLASH, 16K x 8 RAM, 41 I/O, 100-LQFP, -40°C~105°C.

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

Specifications

LM3S1110-EQC25-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)
Speed25MHz
PackageTray
RAM size16K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityIrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)41
Core processorARM® Cortex®-M3
Case100-LQFP
Program memory size64KB (64K x 8)

Product details

The LM3S1110-EQC25-A2: Typical applications include motor control, industrial sensors, and embedded control boards where a low-power Cortex-M3 core with a mature peripheral set is sufficient.

At 25 MHz the Cortex-M3 core runs with zero-wait-state Flash access for most linear code, but branching or tight loops that cross a Flash boundary may introduce a single wait state. The 16 KB RAM is sized for moderate data buffers and stack — enough for a UART command parser or a sensor fusion loop, but tight if you are running a TCP/IP stack without external memory. The 41 I/O lines come in a 100-pin LQFP, so plenty of pins are available for parallel LCD or memory interfaces, though the part lacks an external bus controller.

The LM3S1110 integrates UART/USART, SPI, SSI, Microwire, and IrDA interfaces, plus a PWM module, watchdog timer, and brown-out detect/reset. The UART count is not explicitly stated in the brief, but the connectivity list suggests at least one full-duplex UART with IrDA support.

No direct TI replacement order code is provided in the available records. The Stellaris family was acquired by TI from Luminary Micro and has been largely superseded by the Tiva C series, but pin-compatibility is not guaranteed without a cross-reference check.

The exposed pad is not present on this package variant, so thermal dissipation relies on the leadframe and board copper.

Frequently asked questions

What is the operating frequency of LM3S1110-EQC25-A2?

The LM3S1110-EQC25-A2 runs at 25 MHz. At this speed the Cortex-M3 core accesses Flash with zero wait states for most linear code, but tight loops crossing a Flash boundary may incur a single wait state.