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Texas Instruments LM3S1918-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3S1918-IQC50-A2 ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash

MPNLM3S1918-IQC50-A2
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Texas Instruments Stellaris ARM Cortex-M3S 1000 microcontroller, LM3S1918-IQC50-A2, 32-bit single-core, 50 MHz, 256 KB flash, 64 KB RAM, 100-LQFP.

$31.3034Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3S1918-IQC50-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~85°C
Speed50MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)52
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size256KB (256K x 8)

Product details

Cortex-M3 core with 50 MHz throughput

The LM3S1918-IQC50-A2: The single-cycle multiply and hardware divide give it predictable timing for control loops and protocol handling.

On-chip memory and peripheral mix

The flash is field-programmable via UART or JTAG. Connectivity includes I²C, SPI, SSI, UART/USART, and IrDA — enough to interface with sensors, displays, and serial radios. 52 GPIO lines and an 8-channel 10-bit ADC cover most mixed-signal control tasks. On-chip peripherals include brown-out detect, POR, PWM, and a watchdog timer — the basic safety net for an unattended controller.

Industrial temperature range and supply

The single 2.25 V to 2.75 V supply rail simplifies the power tree — one LDO or buck converter feeds the core and I/O.

The exposed pad is not present — standard QFP reflow profile applies.

Active lifecycle — sourcing posture

No end-of-life notice or last-time-buy window is in effect.

Frequently asked questions

What is the closest pin-compatible alternative to the LM3S1918-IQC50-A2?

The LM3S1918 is part of the Stellaris Cortex-M3S 1000 family. Confirm the exact memory and peripheral requirements before substituting.

What is the LM3S1918-IQC50-A2's listed speed?

The core runs at 50 MHz. This is the maximum clock from the internal oscillator; the Cortex-M3 pipeline sustains one instruction per cycle for most operations.

What compliance documentation does Texas Instruments provide for the LM3S1918-IQC50-A2?

TI provides RoHS and REACH compliance data for this part. The 100-LQFP package is lead-free and compatible with standard reflow profiles.