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Texas Instruments LM3S8538-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S8538-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S8538-IQC50-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 8000 series LM3S8538-IQC50-A2, 32-bit single-core MCU, 50 MHz, 96 KB Flash, 64 KB SRAM, 36 I/O, CAN/Ethernet, 100-LQFP, -40°C to 85°C.

$14.7200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S8538-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)36
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 8x10b
Program memory size96KB (96K x 8)

Product details

The LM3S8538-IQC50-A2 is obsolete per the manufacturer. For existing BOM lines, procurement must go through surplus or broker channels.

Program memory is 96 KB of Flash, backed by 64 KB of SRAM — enough for moderate firmware stacks running a real-time OS or bare-metal control loop. The 64 KB SRAM gives room for Ethernet packet buffers or CAN message queues without external memory.

The 8-channel 10-bit ADC covers analog sensor inputs. Brown-out detect, POR, PWM, and WDT are integrated for supervisory and timing tasks.

Housed in a 100-pin LQFP (14x14 mm body), surface-mount.

Frequently asked questions

What is the replacement for LM3S8538-IQC50-A2?

No official replacement part number is listed for the LM3S8538-IQC50-A2. For a pin-compatible alternative within the same Stellaris family, the LM3S8000 series offers similar Cortex-M3 cores with varying memory and peripheral options — but each variant must be verified for footprint and firmware compatibility against the original BOM.