Serial RAM Board (MIKROE-427)

The SerialRAM Board features an 8192-byte Serial SRAM 23K640 designed to communicate via the microcontroller's SPI interface. It may also be interfaced with a microcontroller that doesn't have a built-in SPI port by using discrete I/O lines. Board features voltage translators that enable connection with systems operating at different voltage levels.

http://www.mikroe.com/add-on-boards/storage/serialram/