The 96 KB SRAM is split across internal blocks, but the DMA controller (listed among the peripherals) can move Ethernet or USB frames directly to memory, reducing CPU load for sustained throughput. For designs that need to log data or run a small RTOS, the available RAM is generous compared to typical 64 KB Cortex-M3 parts in the same package class.
Obsolete — sourcing reality and what to expect
The LM3S9B92-IBZ80-C1T is officially marked as obsolete by Texas Instruments. We source these parts to order against an RFQ, verifying authenticity and condition before shipment.
108-ball BGA — layout and rework considerations
The 108-LFBGA package (10x10 mm body, 0.8 mm ball pitch) requires a multi-layer PCB with microvias or blind vias to route all 65 I/O plus the Ethernet and USB differential pairs. The supply voltage is a narrow 1.235 V to 1.365 V core rail — a clean 1.3 V LDO or switching regulator with tight tolerance is needed, and the decoupling layout should follow the Stellaris hardware design guide to avoid brown-out resets.