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Texas Instruments LM3S5732-IQR50-A0 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5732-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S5732-IQR50-A0
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5732-IQR50-A0, 32-Bit Single-Core MCU, 50MHz, 128KB Flash, 64K x 8 RAM, CANbus/USB/I²C/SPI/UART, 33 I/O, 64-LQFP, -40°C~85°C.

$26.7016Ref. price · indicative, final on quote
Texas Instruments LM3S5732-IQR50-A0 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5732-IQR50-A0 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
PackageTray
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)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 6x10b
Program memory size128KB (128K x 8)

Product details

What this Cortex-M3 brings to the board

The peripheral set includes a 6-channel 10-bit ADC, PWM timers, and a full suite of serial interfaces: CAN, I²C, IrDA, Microwire, SPI, SSI, UART, and USB.

NRND status — plan the BOM transition

That means TI has stopped active design-in support, though the device remains available through independent distribution for existing production runs.

Connectivity and peripheral mix

With CAN 2.0B and USB (device/host/OTG) on-chip, this MCU targets industrial gateway nodes, motor-control panels, and automotive body controllers. The 6-channel 10-bit ADC samples at rates adequate for current-sense and temperature monitoring.

Frequently asked questions

What is the replacement for LM3S5732-IQR50-A0?

For a pin-compatible drop-in, check the Stellaris family parts with similar package and memory — TI's migration guides recommend evaluating the TM4C12x series for new designs, though pin compatibility varies by variant.