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Texas Instruments LM3S8738-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S8738-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash

MPNLM3S8738-IQC50-A2
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 8000 series LM3S8738-IQC50-A2, 32-bit single-core MCU, 50MHz, 128KB Flash, 64K x 8 RAM, 38 I/O, CANbus/Ethernet/I²C/SPI/UART, 2.25V~2.75V, -40°C~85°C, 100-LQFP.

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

Specifications

LM3S8738-IQC50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 8000
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, POR, PWM, WDT
ConnectivityCANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)38
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size128KB (128K x 8)

Product details

Stellaris ARM Cortex-M3 with integrated Ethernet and CAN

The LM3S8738-IQC50-A2: The LM3S8738 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 8000 series, clocked at 50 MHz.

The 64 KB SRAM leaves room for two moderate-sized packet buffers plus a real-time OS heap.

Obsolete — sourcing reality for the BOM line

This part is officially obsolete per the manufacturer's lifecycle status. No direct pin-compatible successor from TI's Stellaris line has been published; the Stellaris family was transitioned to the Tiva™ C series, which uses a different pinout and supply architecture. For existing production boards that cannot be redesigned, the only channel is the independent surplus and broker market.

Frequently asked questions

What is the replacement for LM3S8738-IQC50-A2?

No direct pin-compatible replacement has been published by Texas Instruments. The Stellaris family was superseded by the Tiva C series, which uses a different pinout and supply voltage. A board redesign with a current-generation MCU is the practical path for new production.

What are the key specifications of LM3S8738-IQC50-A2?

The LM3S8738-IQC50-A2 is a 32-bit ARM Cortex-M3 MCU running at 50 MHz, with 128 KB Flash, 64 KB SRAM, 38 I/O, integrated Ethernet MAC, CAN 2.0B, I²C, SPI, UART, and an 8-channel 10-bit ADC. It operates from 2.25 V to 2.75 V over -40°C to 85°C in a 100-LQFP package.