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Texas Instruments LM3S9DN6-IQC80-A1 — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S9DN6-IQC80-A1 ARM Cortex-M3 MCU, 80MHz

MPNLM3S9DN6-IQC80-A1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 9000 series LM3S9DN6-IQC80-A1, 32-bit single-core MCU, 80MHz, 512KB Flash, 96KB SRAM, Ethernet MAC, USB OTG, 72 I/O, 16x12b ADC, 100-LQFP, -40°C to 85°C.

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

Specifications

LM3S9DN6-IQC80-A1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 9000
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, I²S, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG
Number of i (O)72
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 16x12b
Program memory size512KB (512K x 8)

Product details

What this Stellaris MCU brings to a design

The 72 general-purpose I/O lines and 16-channel 12-bit ADC give it enough headroom for sensor fusion and human-machine interface tasks in a single chip.

80 MHz Cortex-M3 — enough for protocol stacks and control loops

At 80 MHz the Cortex-M3 core handles TCP/IP stacks, USB device/host drivers, and real-time control loops without breaking a sweat. The 512 KB Flash leaves room for a full RTOS image plus application code; the 96 KB SRAM supports moderate-sized packet buffers and data arrays. If your design needs more headroom for heavy DSP or video, you would step up to a Cortex-M4 or M7 — but for most connectivity-centric embedded tasks this is a well-balanced part.

Industrial temperature range and 100-LQFP package

Official last-time-buy windows have closed, so new production stock is no longer flowing through authorized distribution.

Peripherals and connectivity in one chip

The 16-channel 12-bit ADC covers multi-sensor acquisition without an external mux.

Frequently asked questions

Is LM3S9DN6-IQC80-A1 obsolete?

Yes, Texas Instruments lists the LM3S9DN6-IQC80-A1 as obsolete. Official last-time-buy windows have passed. The part is available only through surplus and broker channels.

What is the replacement or equivalent for LM3S9DN6-IQC80-A1?

For a new design, consider TI's current Tiva-C or Stellaris family parts with similar ARM Cortex-M3 or M4 cores, Ethernet MAC, and USB OTG — verify pin compatibility and memory sizing against your BOM.

Does LM3S9DN6-IQC80-A1 have integrated Ethernet and USB OTG?

Yes, the LM3S9DN6-IQC80-A1 integrates an Ethernet MAC controller and a USB OTG interface, along with CAN, I²C, SPI, UART, and other serial connectivity.

What is LM3S9DN6-IQC80-A1's listed speed?

The core runs at 80 MHz, which is sufficient for running TCP/IP stacks, USB drivers, and real-time control loops in a single-chip design.