The LM3S6911-IBZ50-A2: The 50 MHz Cortex-M3 core delivers enough throughput to handle a lightweight TCP/IP stack, real-time sensor polling, and a control loop in the same part. The 64 KB SRAM gives room for packet buffers and state variables without needing external memory. The 256 KB Flash can hold a moderate application plus a bootloader — plan for firmware-over-Ethernet updates within that footprint.
Ethernet MAC+PHY — no external transceiver needed
The integrated Ethernet MAC and PHY saves board space and BOM cost compared to a two-chip solution. The 46 general-purpose I/O pins still leave room for parallel displays, keypads, or additional sensors alongside the network interface.
The 108-ball BGA (10x10 mm body) requires a multi-layer PCB with microvias for routing and a controlled reflow profile — not a hand-solder part.
No official successor part is recorded on this listing. For production or repair runs, procurement will need to source from independent distribution or the surplus market.