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Texas Instruments LM3S9B92-IBZ80-C3T — Microcontrollers & Processors (MCU / MPU / DSP)

TI LM3S9B92-IBZ80-C3T Cortex-M3 MCU, 80MHz, 256KB Flash, BGA

MPNLM3S9B92-IBZ80-C3T
Obsolete

Texas Instruments Stellaris ARM Cortex-M3S 9000 series, LM3S9B92-IBZ80-C3T, 32-bit single-core MCU, 80MHz, 256KB Flash, 96KB RAM, 108-LFBGA (10x10), -40°C to 85°C, Tape & Reel.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9B92-IBZ80-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, QEI, SPI, SSI, UART/USART, USB OTG
Number of i (O)65
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 16x10b
Program memory size256KB (256K x 8)

Product details

The LM3S9B92-IBZ80-C3T: Sourced here through independent distribution; each reel is lot-traceable and verified against TI's original marking. Availability and current pricing confirmed at RFQ.

Cortex-M3 at 80 MHz with 256 KB Flash

ARM Cortex-M3 core running at 80 MHz — the 32-bit single-core architecture delivers deterministic interrupt response and a 1.25 DMIPS/MHz instruction throughput, adequate for real-time control loops and protocol stacks. On-chip memory: 256 KB Flash (256K x 8) for firmware and 96 KB SRAM (96K x 8) for data. The 96 KB RAM leaves headroom for Ethernet buffering and multi-packet USB transfers without external memory.

Connectivity and peripheral set

Integrated Ethernet MAC+PHY, USB OTG, and CANbus — the part was designed for industrial gateways and embedded networking nodes that need a single-chip controller with wired interfaces. Additional peripherals: I²C, SPI, SSI, UART/USART, IrDA, LINbus, Microwire, QEI, plus DMA and a 16-channel 10-bit ADC. The 65 I/O lines are multiplexed across these functions.

Package and supply rail

108-ball LFBGA (10x10 mm) — the 0.80 mm ball pitch requires a 4-layer PCB for fan-out.

Frequently asked questions

Does the LM3S9B92 integrate the Ethernet PHY or does it require an external chip?

The Ethernet block is the MAC plus an integrated PHY — meaning the physical-layer transceiver is on-chip, but a compliant Ethernet channel still requires an external MagJack with integrated magnetics and the associated reference design layout between the MCU and the connector.

What temperature grade does the C3T suffix indicate on this part?

The C3T suffix corresponds to the commercial temperature grade, rated at -40°C to 85°C ambient operating temperature. This is not an automotive or extended-industrial grade part.