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Texas Instruments LM3S9790-IBZ80-C5 — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S9790-IBZ80-C5 Stellaris ARM Cortex-M3 MCU, 80 MHz, 128 KB Flash

MPNLM3S9790-IBZ80-C5
Obsolete

Texas Instruments Stellaris® ARM® Cortex®-M3S 9000 series LM3S9790-IBZ80-C5, 32-bit single-core MCU, 80 MHz, 128 KB Flash, 64K x 8 RAM, 60 I/O, 108-LFBGA, -40°C to 85°C.

Texas Instruments LM3S9790-IBZ80-C5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S9790-IBZ80-C5 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, 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 size128KB (128K x 8)

Product details

The Texas Instruments LM3S9790-IBZ80-C5 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 9000 series, clocked at 80 MHz with 128 KB of Flash program memory and 64K x 8 of SRAM.

The 80 MHz core delivers single-cycle multiply and hardware divide, so a PID loop or protocol stack (TCP/IP, CANopen) runs without a heavy clock-stretch penalty. For a motor-drive or networked sensor node, this speed class handles the control math and Ethernet frame processing on one core.

Texas Instruments has designated the LM3S9790-IBZ80-C5 as obsolete (EOL). No direct pin-compatible replacement is listed in the Stellaris family; the Stellaris line has been phased out.

Industrial temperature and BGA package notes

X-ray inspection is recommended after reflow to verify solder-joint integrity under the package.

Frequently asked questions

What is the replacement for LM3S9790-IBZ80-C5?

There is no direct pin-compatible replacement from TI. The typical migration path is to the Tiva C Series TM4C129x family (Cortex-M4F with Ethernet, USB, CAN), which requires a PCB redesign. For existing BOMs, the part is available through surplus and independent channels.

What are the specifications of LM3S9790-IBZ80-C5?

Key specs: 80 MHz ARM Cortex-M3 core, 128 KB Flash, 64K x 8 SRAM, 60 GPIO, Ethernet MAC+PHY, USB OTG, two CAN 2.0B, 16-channel 10-bit ADC, operating from 1.235 V to 1.365 V, industrial temperature range -40°C to 85°C, in a 108-ball BGA (10x10 mm) package.

What package is the LM3S9790-IBZ80-C5?

It is supplied in a 108-ball LFBGA (10x10 mm) package, surface-mount.