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Texas Instruments LM3S1N16-IQR50-C5 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1N16-IQR50-C5 ARM Cortex-M3 MCU, 50MHz, 64KB Flash

MPNLM3S1N16-IQR50-C5
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1N16-IQR50-C5, 32-Bit Single-Core MCU, 50MHz, 64KB FLASH, 12K x 8 RAM, 33 I/O, I²C/SPI/UART/LIN/IrDA, 64-LQFP, -40°C~85°C.

$5.8100Ref. price · indicative, final on quote
Texas Instruments LM3S1N16-IQR50-C5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1N16-IQR50-C5 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 size12K 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 size64KB (64K x 8)

Product details

What this Stellaris MCU brings to a control board

Obsolete — sourcing reality for sustainment programs

The 50 MHz core clock delivers roughly 1.25 DMIPS/MHz on the Cortex-M3 pipeline, translating to about 62 DMIPS of sustained throughput. That is sufficient for a single PID loop running at 10 kHz with sensor polling, a Modbus RTU stack, and a local HMI display update — without starving the DMA channels for ADC data movement.

Memory budget for firmware and data

64 KB of Flash and 12 KB of SRAM set a firm ceiling on code size and runtime variables.

Frequently asked questions

What is the replacement for LM3S1N16-IQR50-C5?

For a form-fit-function substitute, review other Stellaris ARM Cortex-M3 devices in the 64-LQFP package with similar peripheral sets — but verify pin compatibility and memory sizing against your firmware budget.