LPC1768
Цитата
On-chip SRAM includes:
32/16 kB of SRAM on the CPU with local code/data bus for high-performance CPU access.
Two/one 16 kB SRAM blocks with separate access paths for higher throughput. These SRAM blocks may be used for Ethernet, USB, and DMA memory, as well as for general purpose CPU instruction and data storage.
uIP
Цитата
Very small code size.
Very low RAM usage, configurable at compile time. (я бы даже сказал байты)
А если не использовать memcpy() а работать с указателями DMA... Тут, думаю, и 18Mbit/s не предел...