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Texas Instruments LM3S9792-IBZ80-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9792-IBZ80-C1 Stellaris ARM Cortex-M3 MCU, 80MHz, 128KB Flash

MPNLM3S9792-IBZ80-C1
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 9000 series 32-bit MCU, LM3S9792-IBZ80-C1, 80MHz core, 128KB Flash, 64KB SRAM, Ethernet/CAN/USB OTG, 108-BGA, -40°C to 85°C.

Texas Instruments LM3S9792-IBZ80-C1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9792-IBZ80-C1 specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 9000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.235V ~ 1.365V
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, EBI/EMI, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG
Number of i (O)65
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 16x10b
Program memory size128KB (128K x 8)

Product details

The Texas Instruments LM3S9792-IBZ80-C1 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 9000 series, clocked at 80 MHz with 128 KB of Flash program memory and 64 KB of SRAM. It targets industrial control, building automation, and networked embedded systems where on-chip Ethernet, CAN, and USB OTG eliminate the need for external interface chips. The 108-ball BGA package (10x10 mm) keeps the board footprint compact for space-constrained designs.

Lifecycle status: obsolete — sourcing reality for the BOM line

The internal oscillator eliminates the crystal for UART and I²C timing, saving two BOM lines, though Ethernet and CAN still require an external clock source for precision.

Frequently asked questions

What is the closest pin-compatible alternative to LM3S9792-IBZ80-C1?

There is no direct pin-compatible replacement in the Stellaris or TM4C families. A board redesign to a current Cortex-M4 part (such as the TM4C129 series) would be required for a production continuation.

What is the LM3S9792-IBZ80-C1's core speed?

The ARM Cortex-M3 core runs at 80 MHz, which provides sufficient throughput for real-time Ethernet and CAN gateway applications without external protocol processors.