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Texas Instruments LM3S1W16-IQR50-C1T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S1W16-IQR50-C1T ARM Cortex-M3 MCU

MPNLM3S1W16-IQR50-C1T
Obsolete

Texas Instruments Stellaris LM3S1W16-IQR50-C1T, 32-bit ARM Cortex-M3 single-core MCU, 50MHz, 32KB Flash, 8KB RAM, 33 I/O, 8×10b ADC, 1.08V–1.32V, -40°C–85°C, 64-LQFP, Tape & Reel.

Texas Instruments LM3S1W16-IQR50-C1T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1W16-IQR50-C1T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.08V ~ 1.32V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size8K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 8x10b
Program memory size32KB (32K x 8)

Product details

The LM3S1W16-IQR50-C1T is officially classified as Obsolete by Texas Instruments.

The Texas Instruments Stellaris LM3S1W16-IQR50-C1T is a 32-bit ARM Cortex-M3 single-core microcontroller from the Stellaris® ARM® Cortex®-M3S 1000 series.

Serial connectivity and peripheral set

On-chip peripherals such as DMA, PWM, watchdog timer, brown-out detect, and POR reduce external component count.

Industrial temperature range and 64-LQFP package

Supply rail: 1.08 V to 1.32 V core

The core supply range is 1.08 V to 1.32 V — a narrow window that demands a regulated rail, not a direct battery tap. A 1.2 V LDO or switching regulator with tight tolerance is expected. The I/O bank voltage is not specified separately in this listing, so confirm the I/O supply compatibility with the rest of the system before committing the BOM.

Frequently asked questions

Where can I buy LM3S1W16-IQR50-C1T?

The LM3S1W16-IQR50-C1T is obsolete and no longer stocked by the manufacturer. Submit an RFQ for current availability and pricing — each quote is confirmed at the time of request.

What is the replacement for LM3S1W16-IQR50-C1T?

For a pin-compatible alternative within the Stellaris family, check the LM3S series devices in the same 64-LQFP package and 1.08 V–1.32 V supply range — but verify memory and peripheral compatibility against your firmware image. Without an official cross-reference, qualification testing is necessary before substituting.

Can LM3S1W16-IQR50-C1T be used in new designs?

Texas Instruments classifies this part as Obsolete, so it is not recommended for new designs. For new production, look at current-generation ARM Cortex-M3 or Cortex-M4 MCUs from TI or other vendors that offer similar peripheral sets and 64-LQFP packaging.