Skip to main content
Log in
Texas Instruments LM3S5C51-IBZ80-A1 — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S5C51-IBZ80-A1 Stellaris ARM Cortex-M3

MPNLM3S5C51-IBZ80-A1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 5000 series LM3S5C51-IBZ80-A1, 32-bit single-core MCU at 80 MHz, 512 KB Flash, 64 KB SRAM, 67 I/O, USB OTG / CAN / dual SPI / dual UART, 16-ch 12-bit ADC, 108-LFBGA, -40°C to 85°C, 3.0–3.6 V.

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

Specifications

LM3S5C51-IBZ80-A1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 5000
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, 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 16x12b
Program memory size512KB (512K x 8)

Product details

80 MHz Cortex-M3 with USB OTG and CAN — what the BGA footprint means for layout

The LM3S5C51-IBZ80-A1: It packs 67 I/O lines, USB OTG, CAN, dual SPI, dual UART, I²C, and a 16-channel 12-bit ADC into a 108-LFBGA (10x10 mm) package.

For BOM lines that still call out this exact code, supply runs through independent distribution and surplus inventory.

Memory and peripheral budget for the firmware architect

The 67 I/O lines in a 108-ball BGA leave about 41 balls for power and ground, which means the layout engineer needs to fan out the inner rows carefully.

Connectivity set — USB OTG and CAN for industrial links

The peripheral list includes USB OTG, CAN, dual SPI, dual UART, I²C, IrDA, LIN, and Microwire. The 16-channel 12-bit ADC covers analog sensing.

Frequently asked questions

Where can I buy LM3S5C51-IBZ80-A1 available via RFQ confirmation?

Submit an RFQ for current availability and pricing — stock is confirmed at quote time, not listed on the page.

What are the key differences between LM3S5C51-IBZ80-A1 and newer Stellaris MCUs?

Newer Stellaris (now TM4C series) parts typically offer higher core speeds (120 MHz vs 80 MHz), larger Flash and SRAM options, and more advanced peripherals like USB HS and additional CAN channels, but are not pin-compatible with the 108-LFBGA footprint. The LM3S5C51-IBZ80-A1 is a mature design with a proven peripheral set for legacy BOMs.