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Texas Instruments LM3S9B90-IQC80-C3T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S9B90-IQC80-C3T ARM Cortex-M3 MCU, 80MHz, 256KB Flash, 100-

MPNLM3S9B90-IQC80-C3T
Obsolete

Texas Instruments Stellaris LM3S9B90-IQC80-C3T, ARM Cortex-M3 32-bit MCU, 80MHz, 256KB Flash, 96KB RAM, Ethernet, USB OTG, CAN, 60 I/O, 1.235–1.365V, -40 to 85°C, 100-LQFP.

Texas Instruments LM3S9B90-IQC80-C3T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9B90-IQC80-C3T 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, SPI, SSI, UART/USART, USB OTG
Number of i (O)60
Core processorARM® Cortex®-M3
Case100-LQFP
Data convertersA/D 16x10b
Program memory size256KB (256K x 8)

Product details

What this Stellaris MCU brings to the board

The LM3S9B90-IQC80-C3T: 32-bit ARM Cortex-M3 MCU from the Stellaris 9000 series, clocked at 80 MHz with 256 KB Flash and 96 KB RAM.

Obsolete — sourcing reality for the BOM line

Texas Instruments has marked the LM3S9B90-IQC80-C3T as obsolete. No last-time-buy window remains through the factory channel. There is no official TI pin-compatible successor for this 100-pin Stellaris part; if you need a like-for-like drop-in, verify the bootloader and peripheral register map against any candidate before committing the BOM.

Frequently asked questions

Where can I buy LM3S9B90-IQC80-C3T and get a price?

We can source and quote this obsolete MCU to order through our independent distribution network. Submit an RFQ for current availability and pricing — no stock or price figures are published here.

What is the closest pin-compatible alternative to LM3S9B90-IQC80-C3T?

Texas Instruments has not published an official pin-compatible replacement for this Stellaris 9000-series MCU. If you need a like-for-like swap, verify the bootloader, peripheral register map, and oscillator configuration against any candidate before committing the BOM.

What is LM3S9B90-IQC80-C3T's listed speed?

The core runs at 80 MHz, which is the maximum clock for this ARM Cortex-M3 device in the Stellaris 9000 series.

What compliance documentation does this brand provide for LM3S9B90-IQC80-C3T?

Texas Instruments provides RoHS and REACH compliance documentation for this part. The 100-LQFP package is lead-free and RoHS-compliant per TI's standard material declarations.