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Texas Instruments LM3S1332-EQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1332-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 96KB Flash, 100-LQFP

MPNLM3S1332-EQC50-A2
Obsolete

LM3S1332-EQC50-A2, Stellaris ARM Cortex-M3 32-bit single-core at 50MHz, 96KB Flash, 16KB RAM, 57 I/O, 2.25-2.75V supply, -40 to 105°C, 100-LQFP tray.

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

Specifications

LM3S1332-EQC50-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)
Speed50MHz
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)57
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 3x10b
Program memory size96KB (96K x 8)

Product details

What this Stellaris MCU brings to a control board

The LM3S1332-EQC50-A2 is a Stellaris ARM Cortex-M3 32-bit single-core microcontroller clocked at 50 MHz. It packs 96 KB of Flash and 16 KB of RAM, with 57 general-purpose I/O lines.

96 KB of Flash holds a moderate control stack: bootloader, RTOS kernel, driver layer, and a few application tasks. 16 KB of RAM limits runtime data buffers — enough for a few hundred bytes of Modbus holding registers or a small circular log, but not for a large display frame buffer or extensive data logging. Plan your stack and heap usage early in the firmware design.

Industrial temperature grade — deployment environment

Rated from -40 to 105°C, this MCU is qualified for outdoor telecom cabinets, factory automation panels, and engine-bay electronics. The 100-LQFP package (14x14 mm) reflows well under a hot-air station.

Frequently asked questions

What is the replacement for LM3S1332-EQC50-A2?

No official replacement part number is listed by the manufacturer. For a pin-compatible alternative within the Stellaris family, you would need to cross-reference the current Tiva C Series portfolio — but no direct drop-in successor is documented.

What are the specifications of LM3S1332-EQC50-A2?

The LM3S1332-EQC50-A2 is a 32-bit ARM Cortex-M3 MCU running at 50 MHz, with 96 KB Flash, 16 KB RAM, 57 I/O, a 3-channel 10-bit ADC, and connectivity including UART, SPI, SSI, IrDA, and Microwire. It operates from 2.25 to 2.75 V over -40 to 105°C.