If your prototype device needs more memory space then the SerialFlash PROTO Board is an excellent choice. The on-board EN25F80 circuit provides additional 8Mbit flash memory via a Serial Peripheral Interface (SPI). Ready-to-use examples comes with board.
The SerialRAM PROTO Board enables you to add a Serial RAM device to your prototype device. A 23K640 Serial RAM device is available on-board and communicates with microcontrollers via a Serial Peripheral Interface (SPI).