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Texas Instruments LM3S6C65-IBZ80-A1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S6C65-IBZ80-A1 Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S6C65-IBZ80-A1
End of Life

Texas Instruments Stellaris ARM Cortex-M3S 6000 series LM3S6C65-IBZ80-A1, 32-bit single-core MCU, 80MHz, 512KB Flash, 64K x 8 SRAM, Ethernet MAC, 16-ch 12-bit ADC, 46 I/O, 108-BGA, -40°C to 85°C.

Texas Instruments LM3S6C65-IBZ80-A1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3S6C65-IBZ80-A1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 6000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityEthernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART
Number of i (O)46
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 16x12b
Program memory size512KB (512K x 8)

Product details

Stellaris 6000 — Ethernet-connected Cortex-M3 at 80 MHz

The 512 KB program Flash is sized for a full Ethernet stack (lwIP or similar), a real-time OS kernel, and a moderate application layer. The 64 KB SRAM is the working memory for stack buffers, packet queues, and task contexts.

108-ball BGA — layout and rework notes

The LM3S6C65-IBZ80-A1 comes in a 108-LFBGA package with a 10x10 mm body. The 46 I/O count is moderate for a BGA of this size.

That means Texas Instruments is still manufacturing this part, it is not on a last-time-buy or end-of-life notification, and it remains qualified for new design-ins. The base product number is LM3S6C65, so any PCN or errata updates will be published under that root.

Frequently asked questions

Does the LM3S6C65-IBZ80-A1 have Ethernet connectivity?

Yes. This is a MAC-layer controller — you still need an external PHY chip and magnetics to complete the physical interface, but the MAC integration saves a separate Ethernet controller IC and its associated BOM cost.