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Texas Instruments LM3S1816-IQR50-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1816-IQR50-C1 Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S1816-IQR50-C1
Obsolete

Texas Instruments (formerly Luminary Micro) Stellaris® ARM® Cortex®-M3S 1000 series, LM3S1816-IQR50-C1, 32-Bit Single-Core MCU, 50MHz, 256KB (256K x 8) FLASH, 32K x 8 RAM, 64-LQFP (10x10), -40°C~85°C.

$5.4000Ref. price · indicative, final on quote
Texas Instruments LM3S1816-IQR50-C1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1816-IQR50-C1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.08V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 8x10b
Program memory size256KB (256K x 8)

Product details

There is no direct factory-sourced last-time buy window open.

Core specs and what they drive

This is a 32-bit ARM Cortex-M3 core clocked at 50 MHz, from the Stellaris® ARM® Cortex®-M3S 1000 series. The 33 general-purpose I/O pins and the 8-channel 10-bit ADC give it the peripheral count for sensor interfacing and actuator control in a 64-LQFP package. The 50 MHz clock is the practical limit for interrupt latency and bus throughput. The DMA peripheral offloads data movement without stalling the core.

The 64-pin LQFP with a 10x10 mm body is a standard industrial MCU footprint.

This covers the common sensor buses (I²C, SPI) and industrial comms (UART, SSI).

Frequently asked questions

Is LM3S1816-IQR50-C1 obsolete?

Yes. The lifecycle record lists LM3S1816-IQR50-C1 as Obsolete. Texas Instruments has discontinued production of this specific Stellaris ARM Cortex-M3 MCU. Sourcing is through the independent surplus and broker channel, quoted against an RFQ.

What is the replacement for LM3S1816-IQR50-C1?

The Stellaris family includes other LM3S parts with similar core and memory, but any replacement must be verified for pin-compatibility and software migration. A direct drop-in from the same series would need the same 64-LQFP footprint and 50 MHz clock.

Where can I buy LM3S1816-IQR50-C1?

Submit an RFQ through this listing for a real-time lot check.

What is LM3S1816-IQR50-C1's listed speed?

The core is rated at 50 MHz. This is the maximum ARM Cortex-M3 clock frequency for this device, and it determines the interrupt latency and Flash access timing for the application.