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Texas Instruments LM3S6938-IBZ50-A2T — Microcontrollers & Processors (MCU / MPU / DSP)

LM3S6938-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash

MPNLM3S6938-IBZ50-A2T
Obsolete

TI / Stellaris ARM Cortex-M3S 6000 series MCU, LM3S6938-IBZ50-A2T, 32-bit single-core at 50 MHz, 256 KB Flash, 64 KB RAM, Ethernet MAC+PHY, 38 GPIO, 8-channel 10-bit ADC, industrial -40°C to 85°C, 108-ball BGA (10x10 mm).

$14.5400Ref. price · indicative, final on quote
Texas Instruments LM3S6938-IBZ50-A2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3S6938-IBZ50-A2T specifications
ParameterValue
SeriesStellaris® ARM® Cortex®-M3S 6000
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 size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityEthernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
Number of i (O)38
Core processorARM® Cortex®-M3
Case108-LFBGA
Data convertersA/D 8x10b
Program memory size256KB (256K x 8)

Product details

The LM3S6938-IBZ50-A2T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 6000 series, clocked at 50 MHz. It carries 256 KB of program Flash and 64 KB of SRAM, with an integrated Ethernet MAC+PHY.

The 50 MHz Cortex-M3 runs a single-threaded protocol stack plus application logic. The 38 GPIOs and 8-channel 10-bit ADC cover sensor readout and relay control.

EOL status and sourcing reality

This part is marked Obsolete by the manufacturer. There is no factory last-time-buy window open; procurement should treat this as a surplus-channel part and plan for a redesign if volume production continues.

Frequently asked questions

What is the exact replacement for LM3S6938-IBZ50-A2T?

No official replacement part number is listed in the lifecycle record. The part is available through independent distribution on a quoted-to-order basis; a redesign to a current Stellaris or TM4C series MCU is recommended for new production.

Does LM3S6938-IBZ50-A2T have Ethernet?

Yes, the LM3S6938-IBZ50-A2T includes an integrated 10/100 Ethernet MAC with internal PHY.

What is the speed of LM3S6938-IBZ50-A2T?

The LM3S6938-IBZ50-A2T runs at 50 MHz on the ARM Cortex-M3 core.