X25401 Datasheet | Xicor

APPLICATION NOTE A V A I L A B L E X25401 256 Bit AN56 SPI Serial AUTOSTORE™ NOVRAM 16 x 16 Bit Features DESCRIPTION The Xicor X25401 is a serial 256 bit NOVRAM featuring a static RAM configured 16 x 16, overlaid bit-by-bit with a nonvolatile E2PROM array. The X25401 Features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple three-wire bus. The bus signals are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input, allowing any number of devices to share the same bus. The Xicor NOVRAM design allows data to be transferred between the two memory arrays by...