Serial RAM PROTO Board  (MIKROE-428)

The SerialRAM PROTO Board features an 8192-byte Serial SRAM 23K640 designed to communicate via the microcontroller's SPI interface. It is a great choice for depositing large ammounts of temporary variables and acquisition data, and using them in your code. Perfectly fits into all standard prototyping breadboards.

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