What the LM3S6938-IBZ50-A2T is and where it fits
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.
50 MHz core — what it means for the BOM
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. No official successor part number is listed in the lifecycle record. For existing BOM lines, the LM3S6938-IBZ50-A2T is sourced through independent distribution on a quoted-to-order basis — availability and current pricing are confirmed at quote time. 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.