Spansion's S25FL2xxK Series Serial Flash Memory offers advanced write protection mechanisms. These devices support the standard Serial Peripheral Interface (SPI), and a high performance Dual output using SPI pins: Serial Clock, Chip Select, Serial SI/IO0, SO, WP# and HOLD#. SPI clock frequencies of up to 85 MHz are supported along with a clock rate of up to 85 MHz for Dual Output Read. Up to 256 bytes can be programmed at a time. Pages can be erased in groups of 16 (4 kB Sector Erase), groups of 256 (64 kB Block Erase) or the entire chip (Chip Erase). The small 4 kB sectors allow for greater flexibility in applications that require data and parameter storage.