Skip to main content
Texas Instruments LM3S5651-IQC80-C3T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5651-IQC80-C3T ARM Cortex-M3 MCU, 80MHz, 128KB Flash

MPNLM3S5651-IQC80-C3T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5651-IQC80-C3T, 32-bit ARM Cortex-M3 at 80MHz, 128KB Flash, 32KB RAM, USB OTG / CAN / I²C / SPI / UART, 67 I/O, 100-LQFP (14x14), -40°C to 85°C, Tape & Reel.

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

Specifications

LM3S5651-IQC80-C3T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.08V ~ 1.32V
Operating temperature-40°C~85°C(TA)
Speed80MHz
PackageTape & Reel (TR)
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG
Number of i (O)67
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 16x10b
Program memory size128KB (128K x 8)

Product details

Memory and connectivity — sizing the BOM fit

The 16-channel 10-bit ADC covers analog sensing inputs like potentiometers or current shunts. The USB OTG port adds host/device flexibility for data logging or firmware updates via thumb drive.

The core supply range is 1.08 V to 1.32 V.

That means no further factory orders — no last-time buy window remains open. The only channel is independent distribution: surplus stock, new-old-stock, or broker-sourced units. If your BOM line still calls out this exact code, you are buying from whatever inventory exists in the spot market. No official TI successor is published for this exact order code, so a pin-compatible Stellaris part is the closest cross-ship candidate.

Package and footprint — 100-LQFP (14×14)

The part comes in a 100-pin LQFP with a 14×14 mm body.

Frequently asked questions

Is LM3S5651-IQC80-C3T obsolete or end-of-life?

Yes, Texas Instruments lists the LM3S5651-IQC80-C3T as Obsolete. No factory production remains; the only supply is surplus or new-old-stock through independent channels.