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Texas Instruments LM3S9DN5-IBZ80-A2 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9DN5-IBZ80-A2 Stellaris ARM Cortex-M3 MCU, 80MHz

MPNLM3S9DN5-IBZ80-A2
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 9000 series LM3S9DN5-IBZ80-A2, 32-bit single-core MCU, 80MHz, 512KB Flash, 96K x 8 RAM, Ethernet + CAN + USB OTG, 72 I/O, 108-LFBGA, -40°C to 85°C.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9DN5-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

80 MHz Cortex-M3 with Ethernet, CAN, and USB OTG

It integrates Ethernet MAC+PHY, two CAN 2.0B controllers, USB OTG, and a full suite of serial interfaces including UART, SPI, I²C, and SSI — making it a single-chip solution for industrial gateways, networked motor drives, and building-automation controllers that need both fieldbus and Ethernet connectivity.

This part carries an official obsolete lifecycle status.

108-ball BGA — reflow and inspection required

The 1.235 V to 1.365 V core supply is tight — a dedicated LDO or switching regulator with ±1% accuracy is recommended.

Frequently asked questions

Can LM3S9DN5-IBZ80-A2 be used with Ethernet and CAN?

Yes, this MCU integrates an Ethernet MAC+PHY and two CAN 2.0B controllers, along with USB OTG, making it suitable for industrial gateway designs that require both fieldbus and network connectivity.

What is the replacement for LM3S9DN5-IBZ80-A2?

For a pin-compatible alternative within the same Stellaris family, a parametric search against the 108-BGA footprint, 80 MHz core, and Ethernet+CAN peripheral set is the practical route. Contact us with your BOM requirements for cross-reference assistance.