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Texas Instruments LM3S5752-IQR50-A0T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5752-IQR50-A0T Stellaris ARM Cortex-M3 MCU, 50MHz

MPNLM3S5752-IQR50-A0T
End of Life

Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5752-IQR50-A0T 32-bit MCU, 50MHz, 128KB Flash, 64KB SRAM, USB OTG + CAN, -40°C~85°C, 64-LQFP.

$8.1400Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3S5752-IQR50-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 OTG
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 6x10b
Program memory size128KB (128K x 8)

Product details

The LM3S5752-IQR50-A0T is a 32-bit ARM Cortex-M3 MCU from the Stellaris 5000 series, clocked at 50 MHz and built around a single-core Harvard architecture with 128 KB of Flash program memory and 64 KB of SRAM. The industrial temperature grade (-40°C to 85°C) and the 2.25 V to 2.75 V supply range suit it for factory-floor controllers, pump/motor drive communication bridges, and outdoor telecom line cards where the ambient envelope stays within that range.

128 KB Flash, 64 KB SRAM — sizing the firmware and data budget

128 KB Flash and 64 KB SRAM fit a USB device stack, CANopen or Modbus RTU protocol layer, and a control loop.

The LM3S5752-IQR50-A0T carries an EOL hot lifecycle status, meaning the manufacturer has initiated end-of-life transition.

Connectivity peripherals — which interfaces are on this die

Peripherals include USB OTG, CAN, I²C, SPI, SSI, UART, IrDA, and a 6-channel 10-bit ADC.

Package and temperature grade — board fit and environment

64-LQFP package with 10x10 mm body, surface-mount, -40°C to 85°C operating range, 2.25 V to 2.75 V supply.

Frequently asked questions

What is the closest pin-compatible alternative to LM3S5752-IQR50-A0T?

No official successor part number is listed in the lifecycle record. A pin-compatible replacement within the Stellaris 5000 series in the same 64-LQFP package should be evaluated by comparing Flash, SRAM, and peripheral options across the family.

What is LM3S5752-IQR50-A0T's listed speed?

The core runs at 50 MHz, which determines the instruction throughput for control loops, protocol handling, and real-time tasks.

What compliance documentation is available for LM3S5752-IQR50-A0T?

The part is supplied in Tape & Reel packaging. RoHS and REACH compliance documentation is typically available from the manufacturer or distributor upon request.