What this Stellaris MCU brings to the BOM
The LM3S5G51-IBZ80-A2 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 5000 series, clocked at 80 MHz with 384 KB of Flash and 64K x 8 of SRAM. It has 67 I/Os, a 16-channel 12-bit ADC, and connectivity including CANbus, USB OTG, I²C, SPI, UART/USART, and LINbus.
Obsolete — sourcing reality for this line item
The LM3S5G51-IBZ80-A2 is marked obsolete by the manufacturer. No official successor order code is listed in the lifecycle record. The Stellaris family was acquired by TI and largely superseded by the Tiva C Series and later TM4C12x parts, but those are not pin-compatible drop-ins.