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Texas Instruments LM3S9U92-IQC80-A1T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S9U92-IQC80-A1T ARM Cortex-M3 MCU

MPNLM3S9U92-IQC80-A1T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 9000 series LM3S9U92-IQC80-A1T, 32-bit ARM Cortex-M3 MCU, 80MHz, 384KB Flash, 96KB RAM, Ethernet MAC+PHY, dual CAN, USB OTG, 65 I/O, 100-LQFP, -40°C to 85°C, Tape & Reel.

Texas Instruments LM3S9U92-IQC80-A1T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9U92-IQC80-A1T 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
PackageTape & Reel (TR)
RAM size96K 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
Case100-LQFP
Data convertersA/D 16x12b
Program memory size384KB (384K x 8)

Product details

Because the part is obsolete, availability is finite and pricing is market-driven. We confirm current stock position and price at quote time through our multi-source independent distribution network.

Ethernet MAC+PHY and dual CAN — what the connectivity means for your BOM

The dual CAN 2.0B controllers allow bridging between two CAN buses or redundant CAN networks, common in automotive and industrial automation. USB OTG adds host/device flexibility for configuration or data logging. These three interfaces on one die make this MCU a single-chip solution for protocol conversion between industrial Ethernet, CANopen/J1939, and USB.

Memory and package — fit for firmware-heavy applications

With 384 KB of Flash and 96 KB of SRAM, this MCU can host a real-time operating system, a TCP/IP stack, and application code for a control loop without external memory. The 1.235 V to 1.365 V core supply is low-voltage, requiring a dedicated regulator from the 3.3 V I/O rail.

Frequently asked questions

Is LM3S9U92-IQC80-A1T obsolete?

Yes, this part is officially listed as Obsolete by Texas Instruments. There is no direct pin-compatible replacement from TI; a migration to the Tiva C Series (TM4C12x) would require a board redesign.

Does LM3S9U92-IQC80-A1T have Ethernet and CAN?

Yes, it integrates an Ethernet MAC with PHY, dual CAN 2.0B controllers, and USB OTG — all on-chip, no external transceivers needed for the MAC/PHY.

What is the replacement for LM3S9U92-IQC80-A1T?

For new designs, the closest functional migration path is to Texas Instruments' Tiva C Series TM4C12x MCUs, which offer similar Cortex-M3 performance and peripheral sets but require a new PCB layout.

What is LM3S9U92-IQC80-A1T's listed speed?

The core runs at 80 MHz, which is the maximum clock speed for this ARM Cortex-M3 device.