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Texas Instruments LM3S2276-IQR50-A0 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S2276-IQR50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz, 64 KB Flash

MPNLM3S2276-IQR50-A0
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series, LM3S2276-IQR50-A0, 32-Bit Single-Core MCU, 50MHz, 64KB Flash, 32K x 8 RAM, CAN/I²C/SPI/UART, 64-LQFP, -40°C~85°C.

$11.8822Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S2276-IQR50-A0 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 size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)33
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 6x10b
Program memory size64KB (64K x 8)

Product details

Stellaris Cortex-M3 at 50 MHz — what it does

The LM3S2276-IQR50-A0: 32-bit ARM Cortex-M3 MCU from the Stellaris® series, clocked at 50 MHz with 64 KB of Flash and 32 KB of RAM. Includes CAN, I²C, SPI, UART, six 10-bit ADC channels, PWM, DMA, and a brown-out detector.

50 MHz, 64 KB Flash, 32 KB RAM — fit check

The 50 MHz core is enough for a control loop running at a few kilohertz with a CAN message stack and a UART debug channel. The 64 KB Flash holds a moderate firmware image — think bootloader plus application code for a motor drive or a remote I/O node. The 32 KB RAM gives headroom for a couple of CAN message buffers and a small data log.

Industrial temperature grade

Frequently asked questions

What is the replacement for LM3S2276-IQR50-A0?

There is no official TI successor order code listed for this exact variant. A pin-compatible drop-in replacement is not guaranteed. A board-level redesign or a qualified second-source search is the practical path.

What are the key specifications of LM3S2276-IQR50-A0?

The LM3S2276-IQR50-A0 is a 32-bit ARM Cortex-M3 MCU clocked at 50 MHz, with 64 KB Flash, 32 KB RAM, CAN 2.0B, I²C, SPI, UART, six 10-bit ADC channels, and 33 I/O lines in a 64-LQFP package. Operating temperature is -40°C to 85°C.