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Texas Instruments LM3S9U92-IQC80-A1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9U92-IQC80-A1 Stellaris ARM Cortex-M3 MCU, 80MHz

MPNLM3S9U92-IQC80-A1
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series LM3S9U92-IQC80-A1, 32-Bit Single-Core MCU, 80MHz, 384KB Flash, 96K x 8 RAM, 65 I/O, 100-LQFP, -40°C~85°C.

Texas Instruments LM3S9U92-IQC80-A1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9U92-IQC80-A1 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 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

The LM3S9U92-IQC80-A1: On-chip data conversion is handled by a 16-channel, 12-bit ADC. The device was designed for industrial control, building automation, networking gateways, and motor-drive applications where connectivity and real-time response mattered.

80 MHz Cortex-M3 — what the core speed delivers

The 80 MHz ARM Cortex-M3 core handles protocol stacks (Ethernet, USB, CAN) plus a control loop. The 96 KB SRAM is sized for packet buffers and data logging alongside the application heap.

100-LQFP package — footprint and replacement fit

Any pin-compatible replacement candidate must match the 100-LQFP mechanical outline and the 1.235 V to 1.365 V core supply rail.

There is no LTB window remaining; procurement relies on existing stock in the broker and surplus market.

Frequently asked questions

What is the replacement for LM3S9U92-IQC80-A1?

A pin-compatible functional replacement would need to match the 100-LQFP footprint, 1.235 V–1.365 V core supply, and the Stellaris peripheral set (Ethernet, USB OTG, CAN, 12-bit ADC). Without a direct TI cross-reference, a design migration to a current-generation MCU family is the practical path.

What is LM3S9U92-IQC80-A1's listed speed?

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