Skip to main content
Texas Instruments LM3S2533-IQC50-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2533-IQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S2533-IQC50-A2
NRND

Stellaris® ARM® Cortex®-M3S 2000 series, LM3S2533-IQC50-A2, 32-bit MCU, 50 MHz, 96 KB Flash, 64K x 8 SRAM, 48 I/O, CANbus, I²C, SPI, UART, 3x10b ADC, -40 to 85°C, 100-LQFP.

$19.4016Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2533-IQC50-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 2000
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, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)48
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 3x10b
Program memory size96KB (96K x 8)

Product details

Buyers should plan a migration path — the official successor or a pin-compatible drop-in within the Stellaris family is the practical next step for sustaining the BOM.

Memory and peripherals — sizing the application

96 KB Flash is adequate for moderate firmware loads — a bootloader, a real-time kernel, and a handful of application tasks. The 64 KB SRAM gives headroom for packet buffers and data logging. The integrated 10-bit ADC (3 channels) handles slow analog inputs like temperature or pressure sensors without an external converter. For applications needing more memory or higher ADC resolution, a move to a larger Stellaris sibling is worth evaluating.

Frequently asked questions

Is LM3S2533-IQC50-A2 obsolete?

This means the manufacturer still supports existing production but advises against using it in new designs. A planned migration to a current-production Stellaris or a newer Cortex-M3/M4 part is recommended for long-term supply security.

What is the replacement for LM3S2533-IQC50-A2?

The official manufacturer successor is not listed in the available records. Within the Stellaris family, a pin-compatible device with the same 100-LQFP footprint and similar peripheral set is the practical alternative. For new designs, a current-production ARM Cortex-M4 MCU with a 3.3 V supply option and larger Flash/SRAM is a common migration path.