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Texas Instruments LM3S102-EGZ20-C2 — Microcontrollers & Processors (MCU / MPU / DSP)
Texas Instruments

Texas Instruments LM3S102-EGZ20-C2 ARM Cortex-M3 MCU, 20 MHz

MPNLM3S102-EGZ20-C2
End of Life

Texas Instruments Stellaris ARM Cortex-M3S 100 series 32-bit MCU, LM3S102-EGZ20-C2, 20 MHz core, 8 KB Flash, 2 KB RAM, 18 I/O, I²C/SPI/UART, -40 to 105°C, 48-VFQFN exposed pad.

LM3S102-EGZ20-C2 datasheet
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Specifications

LM3S102-EGZ20-C2 Technical Specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 100
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed20MHz
PackageTray
RAM size2K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, Microwire, SPI, SSI, UART/USART
Number of i (O)18
Core processorARM® Cortex®-M3
Case48-VFQFN Exposed Pad
Program memory size8KB (8K x 8)

Product details

What this part is and where it fits

The LM3S102-EGZ20-C2: This is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris series, single-core processor running at 20 MHz. It carries 8 KB Flash and 2 KB RAM, with 18 I/O lines and I²C, SPI, UART interfaces.

20 MHz core — what it means for the control loop

At 20 MHz, this Cortex-M3 executes single-cycle multiply and hardware divide. The 8 KB Flash limits firmware to bootloaders or sensor fusion; the 2 KB RAM caps data buffers.

Lifecycle and sourcing note

This part carries an Active product status entry, but an end-of-life-hot flag appears in the sourcing record. That discrepancy means the part may be in a last-time-buy window. We source it through independent distribution and quote to order against an RFQ.

Frequently asked questions

What is LM3S102-EGZ20-C2's core speed?

The ARM Cortex-M3 core runs at 20 MHz, with single-cycle multiply and hardware divide for efficient control-loop execution.

What is the operating temperature range for this MCU?

It is rated from -40°C to 105°C, making it suitable for industrial and automotive under-hood environments.