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Texas Instruments LM3S9DN5-IBZ80-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9DN5-IBZ80-A2T Stellaris Cortex-M3 MCU, 80 MHz

MPNLM3S9DN5-IBZ80-A2T
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series LM3S9DN5-IBZ80-A2T, 32-Bit Single-Core MCU, 80MHz, 512KB Flash, 96K x 8 RAM, 72 I/O, Ethernet, CAN, USB OTG, -40°C~85°C, 108-LFBGA.

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

Specifications

LM3S9DN5-IBZ80-A2T 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
PackageTape & Reel (TR)
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

The 32-bit core and memory footprint suit control applications that need a real-time OS, moderate code space, and responsive interrupt handling — think industrial Ethernet gateways, motor drives with CANopen, or human-machine interfaces with a network stack. The 72 GPIOs and rich peripheral set (Ethernet MAC+PHY, CAN, USB OTG, multiple UART/SPI/I²C, PWM, QEI) mean it can serve as a system controller without external interface ICs for most common fieldbuses.

108-ball BGA — layout and assembly

The part comes in a 108-LFBGA package, supplier device package 108-BGA (10x10 mm). Supply voltage is 1.235 V to 1.365 V for the core. The internal oscillator is available, but an external crystal or clock source can be used for tighter timing.

Peripheral set — Ethernet, CAN, USB, and more

Connectivity includes CANbus, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, and USB OTG. The 16-channel 12-bit ADC handles analog sensing. Peripherals like DMA, PWM, and watchdog timer offload the core for real-time tasks. This is a fully featured MCU that can serve as the main processor in a distributed control node or a protocol bridge.

Frequently asked questions

What is the replacement for LM3S9DN5-IBZ80-A2T?

Since the part is obsolete, engineers need a drop-in or functional replacement to avoid costly redesigns.

Is LM3S9DN5-IBZ80-A2T obsolete?

Lifecycle status determines whether the part can be sourced normally or requires last-time buy or alternative.

Where can I buy LM3S9DN5-IBZ80-A2T?

Buyers need to find distributors holding stock or surplus suppliers to fulfill BOM lines.

What is the price of LM3S9DN5-IBZ80-A2T?

Cost comparison is essential for budgeting and sourcing decisions, especially when limited stock exists.

What are the specifications of LM3S9DN5-IBZ80-A2T?

Design engineers must verify fit (speed, memory, peripherals) matches their application requirements.

Can LM3S9DN5-IBZ80-A2T be used as a substitute for LM3S9DN5-IBZ80-A2?

Maintenance techs and buyers need to know if minor part number variations are electrically and functionally compatible.