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Texas Instruments LM3S5951-IBZ80-C1T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S5951-IBZ80-C1T ARM Cortex-M3 MCU, 80 MHz, 256 KB Flash

MPNLM3S5951-IBZ80-C1T
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5951-IBZ80-C1T, 32-Bit Single-Core MCU, 80MHz, 256KB Flash, 64K x 8 RAM, CANbus, USB OTG, 67 I/O, 108-LFBGA, -40°C~85°C.

Texas Instruments LM3S5951-IBZ80-C1T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S5951-IBZ80-C1T 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 size64K 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 size256KB (256K x 8)

Product details

80 MHz Cortex-M3 with USB OTG and CAN — what it brings to a control design

The 108-ball BGA package (10x10 mm) keeps the footprint compact but demands a multi-layer PCB and careful routing for the fine-pitch balls.

Memory and peripheral headroom for a BOM review

The 67 GPIOs, combined with CAN, USB OTG, and multiple serial interfaces, mean it can serve as a system controller that talks to sensors, actuators, and a host PC without external bridge chips. The 16-channel 10-bit ADC covers analog feedback for current or temperature sensing. For a BOM engineer, the memory and I/O counts are the first gate: if your application fits in 256 KB and 64 KB, this part has the connectivity to handle most industrial communication protocols.

The 108-BGA (10x10 mm) package is a surface-mount BGA with 108 balls; rework requires a hot-air station with a BGA nozzle and X-ray inspection to verify solder-joint integrity.

Frequently asked questions

Is LM3S5951-IBZ80-C1T obsolete?

Yes, Texas Instruments has classified the LM3S5951-IBZ80-C1T as obsolete. There is no official direct replacement listed. For existing designs, the part can be procured through surplus or broker channels.

Does LM3S5951-IBZ80-C1T have USB OTG?

Yes, the connectivity list includes USB OTG along with CANbus, I²C, SPI, UART, and several other serial interfaces, making it suitable for designs that need both host/device USB and industrial fieldbus communication.