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Texas Instruments LM3S8630-IBZ50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments LM3S8630-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz

MPNLM3S8630-IBZ50-A2T
Obsolete

Texas Instruments, Stellaris ARM Cortex-M3S 8000 series, LM3S8630-IBZ50-A2T, 32-bit single-core MCU, 50 MHz, 128 KB Flash, 32 KB SRAM, Ethernet + CAN, 31 I/O, -40°C to 85°C, 108-BGA (10×10), 2.25–2.75 V supply, tape & reel.

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

Specifications

LM3S8630-IBZ50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 8000
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.25V ~ 2.75V
Operating temperature-40°C~85°C(TA)
Speed50MHz
PackageTape & Reel (TR)
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityCANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)31
Core processorARM® Cortex®-M3
Case108-LFBGA
Program memory size128KB (128K x 8)

Product details

The Texas Instruments LM3S8630-IBZ50-A2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 8000 series, clocked at 50 MHz.

50 MHz Cortex-M3 — what it buys you

At 50 MHz the Cortex-M3 core handles a Modbus/TCP gateway or a CANopen node. The 32 KB SRAM and 128 KB Flash support a TCP/IP stack and application code.

Texas Instruments has marked the LM3S8630-IBZ50-A2T as obsolete. No official successor is listed in the Stellaris 8000 family; the Stellaris line was folded into the Tiva-C portfolio after TI acquired Luminary Micro. For a pin-compatible drop-in you would need to evaluate the Tiva TM4C123x series or an equivalent Cortex-M4 part, but the footprint and peripheral map differ.

Frequently asked questions

What is the replacement for LM3S8630-IBZ50-A2T?

No official direct replacement is listed. The Stellaris architecture was succeeded by the Tiva-C TM4C series, but pin-compatibility and peripheral mapping differ. A full design review is recommended for any replacement candidate.

Does LM3S8630-IBZ50-A2T support Ethernet and CAN?

Yes, the part includes both Ethernet and CANbus connectivity, along with I²C, SPI, SSI, UART, IrDA, and Microwire interfaces.

Where can I buy LM3S8630-IBZ50-A2T?

This obsolete part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.