Olin Lathrop wrote: > I know Phillips owns IIC, but is a license required for SPI? I don't > remember any such restriction, but I could easily be wrong about that. Olin: There's no license required for SPI. In fact, there isn't even a real spec for it; in the design documents I wrote for Cypress's microcontrollers, I was forced by the lack of an official Standard to require "SPI as described in Motorola Semiconductor's M68HC11 Reference Manual". -Andrew === Andrew Warren - fastfwd@ix.netcom.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist