The NB2AS is an Sanguino/Altoids compatible '644 board with a microSD card (SPI interface), real-time clock, and a dual 12-bit DAC. The datasheet is PRELIMINARY and includes a feature summary, assembly instructions, assembly drawings, schematic and a bill-of-materials. See http://wiblocks.luciani.org/NB2/NB2AS-index.html
The DAC and RTC libraries are the same as the NB2A and are on the wiblocks site. The microSD library will be released in July. I have tested the board and library with a Transcend 1GB, Sandisk 2GB and Sandisk 4GB HC card. A demo sketch is at http://wiblocks.luciani.org/docs/app-notes/nb2as-uSD.html
ATmega644P, 3.3V, 12MHz
3.55" x 2.15"
microSD connector. The microSD library has been tested with the following cards -- Transcend 1GB, Sandisk 2GB, Sandisk 4GB HC.
RTC (DS1337+) with a battery backup
Dual 12-bit DAC
All I/O on a single dual header 2x17.
SMD land patterns designed for hand assembly.
I expect the production PCBs will arrive the first week of July. I have a few PCBs left from the last run. A few kits will ship next week but most shipments will start in July.
(* jcl *)