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Texas Instruments LM3S9B90-IBZ80-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3S9B90-IBZ80-C1 Stellaris ARM Cortex-M3 MCU, 80 MHz, 256KB Flash

MPNLM3S9B90-IBZ80-C1
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series MCU, LM3S9B90-IBZ80-C1, 32-bit single-core at 80 MHz, 256KB Flash, 96K x 8 RAM, 60 I/O, Ethernet, USB OTG, CAN, 16x10b ADC, -40°C to 85°C, 108-BGA.

Texas Instruments LM3S9B90-IBZ80-C1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9B90-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 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
Case108-LFBGA
Data convertersA/D 16x10b
Program memory size256KB (256K x 8)

Product details

80 MHz Cortex-M3 with Ethernet and USB OTG — what this MCU brings

On-chip data conversion comes from a 16-channel, 10-bit ADC, and the peripheral list includes PWM, DMA, I²S, a watchdog timer, brown-out reset, and power-on reset.

Obsolete — sourcing reality for the LM3S9B90-IBZ80-C1

Texas Instruments has marked the LM3S9B90-IBZ80-C1 as obsolete.

The 80 MHz Cortex-M3 core delivers enough throughput for real-time control loops and protocol bridging without an external PHY for Ethernet. The 256 KB Flash is adequate for a moderate application stack (TCP/IP, CANopen, USB device class drivers); the 96K x 8 SRAM leaves headroom for packet buffers and data tables. If your design relies on the Ethernet MAC+PHY and USB OTG combination, there are few pin-compatible alternatives in this package — the BGA footprint and supply voltage (1.235 V to 1.365 V core) require a board respin to substitute.

Frequently asked questions

What is the closest pin-compatible alternative to LM3S9B90-IBZ80-C1?

No official pin-compatible substitute is listed. Other Stellaris LM3S9Bxx devices in the 108-BGA package share the same footprint and supply voltage, but memory size and peripheral mix differ — verify the exact pinout and firmware requirements before substituting.

What is the LM3S9B90-IBZ80-C1's core speed?

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

What series is the LM3S9B90-IBZ80-C1 from?

It belongs to the Stellaris ARM Cortex-M3S 9000 series from Texas Instruments.