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Texas Instruments LM3S1F11-IQC80-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S1F11-IQC80-A2 Stellaris ARM Cortex-M3 MCU, 80 MHz, 384 KB Flash

MPNLM3S1F11-IQC80-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1F11-IQC80-A2, 32-bit MCU, 80 MHz, 384 KB Flash, 48 KB SRAM, 67 I/O, 100-LQFP, -40 to 85 °C.

Texas Instruments LM3S1F11-IQC80-A2 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S1F11-IQC80-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 size48K 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
Case100-LQFP
Data convertersA/D 8x12b
Program memory size384KB (384K x 8)

Product details

The part is intended for industrial control, human-machine interface panels, and networked sensor nodes where a mid-range Cortex-M3 core handles both control loops and protocol stacks without an external memory bus.

80 MHz Cortex-M3 — what it means for throughput

The Cortex-M3 core runs at 80 MHz. The 48 KB SRAM supports a moderate TCP/IP buffer pool.

The 8-channel 12-bit ADC is enough for reading a few analog sensors or a joystick; for higher channel counts you would add an external multiplexer or a second MCU.

Frequently asked questions

Is LM3S1F11-IQC80-A2 obsolete?

Yes, Texas Instruments has declared the LM3S1F11-IQC80-A2 obsolete. No factory production remains; supply is limited to surplus and broker inventory.

What is the replacement for LM3S1F11-IQC80-A2?

Texas Instruments does not list a direct pin-compatible successor. The TM4C123 series uses the same 100-LQFP package and a Cortex-M4F core, but firmware migration and peripheral re-mapping are required. For a like-for-like Cortex-M3 alternative, evaluate the STM32F103 series in 100-LQFP.

Where can I buy LM3S1F11-IQC80-A2?

We source the LM3S1F11-IQC80-A2 through independent distribution channels. Submit an RFQ for current availability and pricing — stock levels and lead time are confirmed at quote time.

What is LM3S1F11-IQC80-A2's listed speed?

The core runs at 80 MHz, which is the maximum clock for the ARM Cortex-M3 in this device.

What is the pinout of LM3S1F11-IQC80-A2?

The part is housed in a 100-pin LQFP (14x14 mm body). The pinout is standard for the Stellaris LM3S1F11 family; refer to the datasheet for the full pin assignment table.