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Texas Instruments LM3S9997-IBZ80-C1 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9997-IBZ80-C1 Stellaris ARM Cortex-M3 MCU, 80MHz

MPNLM3S9997-IBZ80-C1
Obsolete

Stellaris® ARM® Cortex®-M3S 9000 series, LM3S9997-IBZ80-C1, 32-Bit Single-Core MCU, 80MHz, 256KB Flash, 64K x 8 SRAM, 108-LFBGA, -40°C~85°C.

Texas Instruments LM3S9997-IBZ80-C1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9997-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 size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityCANbus, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, 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

The 108-LFBGA package (10x10 mm) keeps the footprint compact for space-constrained PCBs.

80 MHz Cortex-M3 with Ethernet and CAN — where the cycle is today

This part is officially obsolete per the manufacturer's lifecycle record. That means TI no longer produces it, and there is no direct pin-compatible successor listed in the Stellaris family. For existing BOM lines, the window to secure last-time-buy inventory has passed; sourcing now relies on available excess stock, which we can quote against an RFQ. The spot market for this code is thin but traceable — franchised excess and verified broker lots are the typical source.

Connectivity set for gateway-class applications

The LM3S9997-IBZ80-C1 integrates Ethernet MAC+PHY, a USB OTG controller, and two CAN 2.0B interfaces alongside legacy serial options (UART, SPI, I²C, SSI, Microwire, IrDA). The 60 general-purpose I/O pins, combined with PWM, QEI, and DMA, give enough headroom for motor control or sensor fusion without an external FPGA.

Package and power supply realities

The I/O bank runs at 3.3 V.

Frequently asked questions

Is LM3S9997-IBZ80-C1 obsolete?

Yes, the LM3S9997-IBZ80-C1 is officially obsolete. TI no longer manufactures it, and there is no direct pin-compatible replacement from the Stellaris family. We can source and quote it against an RFQ through verified distribution channels.

What is the replacement or equivalent for LM3S9997-IBZ80-C1?

TI has not published a direct pin-compatible successor for the LM3S9997-IBZ80-C1. For new designs, consider current-generation Cortex-M4 or M7 MCUs with Ethernet, CAN, and USB OTG, such as the TM4C129x series from TI, though these require a PCB redesign due to different package and pinout. For a drop-in replacement, no equivalent exists; the only option is sourcing the original obsolete part through the secondary market.

Can LM3S9997-IBZ80-C1 be used for new designs?

No, because the part is obsolete and no longer in production. Starting a new design with this MCU carries supply risk and no manufacturer support. It is recommended to select an active, current-generation microcontroller with similar connectivity.