Yes, it uses the new W5200 chip which looks very similar in command-set to the W5100 but has 8 (vs 4) simultanous sockets and 32 (vs 16) kB TX/RX memory buffers. The SPI interface also handles much higher speed than on the W5100 and if I'm not mistaken it has a sequential read/write mode so you don't have to adress each individual byte in a series of read/write ops.
Looks great, but like you say, not yet "buyable" - the bare chip is though.
/Henrik.
Bookmarks