The LM3S1H11-IBZ50-A1: On-chip memory includes 512 KB of flash for program storage and 48 KB of SRAM for data and stack — the flash is large enough to hold a full application stack plus a bootloader, while the SRAM supports moderate-sized buffers for Ethernet or display frame data. It ships in a 108-ball LFBGA (10×10 mm) package — the 0.8 mm ball pitch requires a multi-layer PCB for fan-out, but the compact footprint saves board real estate compared to a larger QFP.
Connectivity covers EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, and UART/USART — the external bus interface (EBI/EMI) is the standout here, letting you attach parallel SRAM, NOR flash, or an FPGA without bit-banging GPIO. 67 general-purpose I/O pins give enough headroom for a parallel LCD interface, keypad matrix, and several sensor buses simultaneously. On-chip peripherals include brown-out detect, DMA, POR, PWM, and a watchdog timer — the DMA engine can move data between peripherals and memory without CPU intervention, freeing the core for control loops. The 8-channel 12-bit ADC samples analog inputs from temperature sensors, potentiometers, or current shunts — enough resolution for most closed-loop control applications that don't require an external converter.
Obsolete — sourcing for legacy and repair
If you're repairing a controller board that has a scorch mark near the BGA, this is the part that goes back on the rework station.