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Texas Instruments LM3S5747-IQC50-A0T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5747-IQC50-A0T Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S5747-IQC50-A0T
Obsolete

Stellaris® ARM® Cortex®-M3S 5000 series, LM3S5747-IQC50-A0T, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 64 KB SRAM, CAN/I²C/SPI/UART/USB, 61 I/O, 100-LQFP, -40°C to 85°C.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5747-IQC50-A0T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB
Number of i (O)61
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size128KB (128K x 8)

Product details

Eight 10-bit ADC channels handle analog feedback from current shunts or thermistors.

Industrial temperature and 100-LQFP — board-fit details

The 61 GPIOs provide ample room for parallel displays, keypads, or external memory interfaces.

TI lists the LM3S5747-IQC50-A0T as obsolete. The Stellaris family was migrated to the Tiva C series, but pin compatibility varies by package and peripheral mix — verify against your specific board layout before assuming a swap. If you are qualifying a second source, a parametric search of the Tiva C TM4C123 or TM4C129 series may yield a functional equivalent, though the footprint and supply voltage differ.

Frequently asked questions

Is LM3S5747-IQC50-A0T obsolete and what is its replacement?

Yes, TI lists this part as obsolete. No official replacement order code is documented in the lifecycle record. The Stellaris family was superseded by the Tiva C series, but pin compatibility is not guaranteed — verify against your board layout before substituting.

Does LM3S5747-IQC50-A0T have a cross-reference or equivalent part?

The Stellaris family was replaced by the Tiva C series, but pin compatibility varies by package and peripheral set — a parametric search is needed to find a functional match.