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Texas Instruments LM3S6C65-IBZ80-A1T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S6C65-IBZ80-A1T ARM Cortex-M3 MCU

MPNLM3S6C65-IBZ80-A1T
End of Life

Texas Instruments Stellaris ARM Cortex-M3S 6000 series, LM3S6C65-IBZ80-A1T, 32-bit single-core MCU, 80 MHz, 512 KB Flash, 64 KB RAM, Ethernet/I2C/SPI/SSI/UART/LINbus/IrDA/QEI/Microwire, 16x12b ADC, 46 I/O, 108-LFBGA (10x10), -40°C to 85°C, 3.0-3.6V, Tape & Reel.

Texas Instruments LM3S6C65-IBZ80-A1T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3S6C65-IBZ80-A1T 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
PackageTape & Reel (TR)
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

ARM Cortex-M3 at 80 MHz with integrated Ethernet MAC

The LM3S6C65-IBZ80-A1T: The 108-ball BGA (10x10 mm) package packs 46 GPIOs and a 16-channel, 12-bit ADC into a compact footprint suited for space-constrained designs.

80 MHz core, 512 KB Flash, 64 KB RAM — the processing budget

At 80 MHz the Cortex-M3 delivers enough throughput to run a real-time operating system, an Ethernet TCP/IP stack, and application code without stalling. The 512 KB Flash holds a full firmware image with room for OTA update staging; the 64 KB SRAM supports moderate packet buffering and stack usage. For designs that need to handle multiple protocol stacks or larger data sets, the 64 KB SRAM is the constraint to budget against.

Frequently asked questions

Can LM3S6C65-IBZ80-A1T be used at 85°C?

Yes.

What is the difference between LM3S6C65 and LM3S6965?

The LM3S6C65 and LM3S6965 are both Stellaris Cortex-M3 parts with the same 80 MHz core, 512 KB Flash, and 64 KB SRAM. The key difference is the peripheral set: the LM3S6C65 includes an Ethernet MAC/PHY, while the LM3S6965 omits it. For designs requiring wired networking, the LM3S6C65 is the correct choice; the LM3S6965 fits applications that do not need Ethernet.