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Texas Instruments LM3S9DN5-IBZ80-A1T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S9DN5-IBZ80-A1T Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S9DN5-IBZ80-A1T
Obsolete

Texas Instruments Stellaris LM3S9DN5-IBZ80-A1T: 32-bit ARM Cortex-M3 single-core at 80 MHz, 512KB Flash, 96KB RAM, 108-LFBGA (10x10 mm) surface-mount, -40 to 85°C, Ethernet MAC, CAN, USB OTG, 16x12-bit ADC.

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

Specifications

LM3S9DN5-IBZ80-A1T 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

What this Stellaris MCU brings to a design

The Texas Instruments LM3S9DN5-IBZ80-A1T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 9000 series, clocked at 80 MHz. It packs 512 KB of Flash and 96 KB of RAM, enough to run a full Ethernet stack with TCP/IP offload and a CANopen node simultaneously. The 108-ball BGA (10x10 mm) keeps the footprint compact for space-constrained industrial or building-automation controllers.

Connectivity and peripherals at a glance

This MCU integrates Ethernet MAC, CAN, USB OTG, UART, SPI, and I²C. The 16-channel 12-bit ADC samples analog signals. On-chip peripherals include PWM, QEI, and DMA.

Texas Instruments has marked the LM3S9DN5-IBZ80-A1T as obsolete. No official successor part number is listed; the Stellaris family has been superseded by the Tiva C series, but pin compatibility is not guaranteed.

Operating conditions and package

The core supply is 1.235 V to 1.365 V; I/O voltage is handled separately.

Frequently asked questions

What is LM3S9DN5-IBZ80-A1T's listed speed?

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