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Texas Instruments LM3S618-IQN50-C2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S618-IQN50-C2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 32 KB Flash

MPNLM3S618-IQN50-C2
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 600 series, LM3S618-IQN50-C2, 32-Bit Single-Core MCU, 50MHz, 32KB Flash, 8K x 8 RAM, 48-LQFP, -40°C~85°C.

$11.4688Ref. price · indicative, final on quote
Texas Instruments LM3S618-IQN50-C2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S618-IQN50-C2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 600
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size8K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityMicrowire, QEI, SPI, SSI, UART/USART
Number of i (O)30
Core processorARM® Cortex®-M3
Case48-LQFP
Data convertersA/D 6x10b
Program memory size32KB (32K x 8)

Product details

The LM3S618-IQN50-C2: The Texas Instruments LM3S618 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 600 series, clocked at 50 MHz. It carries 32 KB of Flash program memory and 8 KB of SRAM, with 30 general-purpose I/O lines and a 6-channel 10-bit ADC on-chip.

On-chip peripherals and I/O

Connectivity covers Microwire, QEI (quadrature encoder interface), SPI, SSI, and UART/USART. The 30 I/O lines in a 48-LQFP leave most pins available after routing the ADC and serial interfaces. The 6-channel 10-bit ADC samples at a rate suitable for current-sense or temperature monitoring, not precision instrumentation.

Supply and temperature range

Frequently asked questions

Is LM3S618-IQN50-C2 obsolete?

The LM3S618-IQN50-C2 is NRND (Not Recommended for New Designs), not fully obsolete. It remains available for existing BOM lines through independent distribution, quoted to order. A replacement should be identified for new builds to avoid last-time-buy constraints.

What is the replacement for LM3S618-IQN50-C2?

No official replacement part number is listed in the manufacturer's lifecycle data. For a pin-compatible alternative within the Stellaris family, evaluate other LM3S6xx devices in the same 48-LQFP package — confirm Flash and RAM sizes match your firmware footprint. For a functionally equivalent modern ARM Cortex-M3 MCU from another vendor, parts like the STM32F103 series offer similar core speed, memory, and peripheral mix but require a board respin.

What is the pinout of LM3S618-IQN50-C2?

The pinout follows the standard 48-LQFP (7x7 mm) footprint for the Stellaris LM3S6xx family. The supplier device package is 48-LQFP (7x7). Refer to the manufacturer's datasheet for the full pin assignment table.

What is LM3S618-IQN50-C2's listed speed?

The core runs at 50 MHz, which is the maximum clock speed for this ARM Cortex-M3 device in the Stellaris 600 series.