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Texas Instruments LM3S9DN6-IBZ80-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9DN6-IBZ80-A2 Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S9DN6-IBZ80-A2
Obsolete

Stellaris® ARM® Cortex®-M3S 9000 series, LM3S9DN6-IBZ80-A2, 32-Bit Single-Core MCU, 80MHz, 512KB Flash, 96K x 8 RAM, Ethernet, USB OTG, CAN, 72 I/O, 108-LFBGA, -40°C~85°C.

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

Specifications

LM3S9DN6-IBZ80-A2 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
Case108-LFBGA
Data convertersA/D 16x12b
Program memory size512KB (512K x 8)

Product details

What this Stellaris Cortex-M3 brings to the board

80 MHz Cortex-M3 — enough headroom for protocol stacks

At 80 MHz the core has the throughput to run a lightweight TCP/IP stack (lwIP or similar) alongside a control loop without starving either. The 96 KB SRAM leaves room for Ethernet frame buffers and a modest RTOS heap. If your application needs to service CAN, USB, and Ethernet concurrently, budget the interrupt latency — the nested vectored interrupt controller (NVIC) handles preemption cleanly, but heavy DMA use (the part includes a DMA controller) reduces CPU load for data movement.

Industrial temperature range and 108-ball BGA footprint

Supply voltage is a tight 1.235 V to 1.365 V core rail, so a clean 1.3 V LDO is needed; the I/O bank runs separately (3.3 V typical, though the evidence does not specify the I/O supply range explicitly).

Frequently asked questions

Is the LM3S9DN6-IBZ80-A2 obsolete?

Yes, Texas Instruments lists this part as obsolete. No official replacement part number has been published. For new designs, consider current TI Cortex-M4F or TM4C series MCUs with Ethernet and CAN; they are not pin-compatible but offer a similar peripheral set.

What is the closest pin-compatible alternative to the LM3S9DN6-IBZ80-A2?

The Stellaris family includes other 108-BGA parts (e.g., LM3S9B96) that share the package and peripheral set, but pin compatibility is not confirmed without a cross-reference document. Contact us with your specific requirements for a cross-reference search.