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Texas Instruments LM3S5651-IBZ80-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5651-IBZ80-C1 Stellaris ARM Cortex-M3 MCU, 80 MHz

MPNLM3S5651-IBZ80-C1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5651-IBZ80-C1, 32-Bit Single-Core MCU, 80MHz, 128KB Flash, 32K x 8 RAM, 108-LFBGA, -40°C~85°C.

Texas Instruments LM3S5651-IBZ80-C1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5651-IBZ80-C1 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
PackageTray
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
Case108-LFBGA
Data convertersA/D 16x10b
Program memory size128KB (128K x 8)

Product details

The LM3S5651-IBZ80-C1 is listed as obsolete. For new designs or volume production, a direct pin-compatible replacement within the Stellaris family is not documented in the available cross-reference data. Sourcing is limited to independent-distribution surplus and broker inventory.

The core operates from a 1.08 V to 1.32 V supply.

Industrial temperature grade and 108-BGA footprint

The 108-LFBGA package (10x10 mm body) demands a BGA-capable assembly line and X-ray inspection for solder-joint verification. The 67 general-purpose I/O pins provide enough headroom for parallel buses and sensor interfaces.

Frequently asked questions

Is LM3S5651-IBZ80-C1 obsolete?

Yes, the LM3S5651-IBZ80-C1 is obsolete. Texas Instruments has discontinued production. Availability is limited to surplus and broker-channel inventory.

Is LM3S5651-IBZ80-C1 suitable for new designs?

No. Because the part is obsolete, it is not recommended for new designs. Use a current-production MCU for ongoing manufacturing.