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Texas Instruments LM3S1D21-IBZ80-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1D21-IBZ80-A2 Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S1D21-IBZ80-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1D21-IBZ80-A2, 32-bit single-core MCU, 80 MHz, 512 KB Flash, 96K x 8 RAM, 108-LFBGA, -40 to 85 °C.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1D21-IBZ80-A2 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 1000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.235V ~ 1.365V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTray
RAM size96K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityEBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART
Number of i (O)67
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 8x12b
Program memory size512KB (512K x 8)

Product details

An internal oscillator and an 8-channel 12-bit ADC round out the feature set.

Buyers needing this exact order code for a BOM line should expect to source through independent distribution or the surplus/broker channel.

108-BGA package — design-in note

The 108-LFBGA package (10x10 mm body) provides 67 I/O lines in a compact footprint. Surface-mount BGA assembly requires controlled reflow profiling and X-ray inspection for solder joint integrity. The 1.235 V to 1.365 V core supply is narrow — a clean, low-noise rail is essential. The industrial temperature rating covers -40 to 85 °C, so the part is qualified for environments where commercial-grade parts would not survive.

Frequently asked questions

What are the specifications of LM3S1D21-IBZ80-A2?

It has 67 I/O lines, an 8-channel 12-bit ADC, and connectivity including I²C, SPI, UART, IrDA, LINbus, and EBI/EMI. It operates from 1.235 V to 1.365 V over -40 to 85 °C and comes in a 108-BGA package.