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Texas Instruments LM3S5737-IQC50-A0T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5737-IQC50-A0T Stellaris ARM Cortex-M3 MCU, 50MHz

MPNLM3S5737-IQC50-A0T
NRND

Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series, LM3S5737-IQC50-A0T, 32-Bit Single-Core MCU, 50MHz, 128KB Flash, 64K x 8 RAM, CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB, 61 I/O, 100-LQFP, -40°C~85°C.

$13.7112Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5737-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

The 100-LQFP package provides 61 GPIOs, and an 8-channel 10-bit ADC is built in. This part targets industrial control nodes, motor drives, and automotive body electronics where CAN connectivity and a moderate memory footprint are required.

This is the official notice that while the part remains available for existing production builds, it is not intended for new design starts. For a buyer managing a BOM line that already uses this MCU, the NRND flag means you have time to secure last-time-buy quantities or qualify a replacement, but you should not commit a new project to this order code.

50 MHz Cortex-M3 — what the speed rating buys you

The 50 MHz core clock is the usual Cortex-M3 sweet spot for control-loop tasks that need more throughput than a 48 MHz Cortex-M0 but don't require the 80–120 MHz tier. With zero-wait-state Flash access at this frequency, the part can handle a CANopen stack, a USB device interface, and a PID loop without stalling the bus. The 64 KB SRAM gives enough headroom for double-buffered ADC data or a modest RTOS heap.

Frequently asked questions

What is the replacement for LM3S5737-IQC50-A0T?

The evidence does not list an official successor order code from Texas Instruments. For a pin-compatible alternative within the Stellaris family, a buyer should review the LM3S5738 or later Cortex-M4F parts in the same 100-LQFP footprint, but verify the peripheral set and memory match the BOM requirements.