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Texas Instruments LM3S5G51-IBZ80-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5G51-IBZ80-A2T Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S5G51-IBZ80-A2T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5G51-IBZ80-A2T, 32-bit single-core MCU, 80 MHz, 384 KB Flash, 64K x 8 RAM, 67 I/O, CAN/I2C/SPI/UART/USB OTG, 108-LFBGA, -40°C to 85°C.

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

Specifications

LM3S5G51-IBZ80-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTape & Reel (TR)
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG
Number of i (O)67
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 16x12b
Program memory size384KB (384K x 8)

Product details

Obsolete — sourcing through independent distribution

The LM3S5G51-IBZ80-A2T carries an obsolete lifecycle status. For existing BOM lines or legacy designs that require this exact MCU, procurement must rely on surplus inventory or broker channels.

Connectivity and peripheral set

The 67 general-purpose I/O lines provide ample headroom for sensor inputs, actuator drivers, and display interfaces.

Frequently asked questions

What is the replacement for LM3S5G51-IBZ80-A2T?

For legacy designs, the part must be sourced through surplus or broker channels.