The SST26VF064B Serial Quad I/O (SQI) flash device utilizes a 4-bit multiplexed I/O serial interface to boost performance while maintaining the compact form factor of standard serial flash devices. SST26VF064B also support full command-set compatibility to traditional Serial Peripheral Interface (SPI) protocol. Operating at frequencies reaching 104 MHz, the SST26VF064B enables minimum latency execute-in-place (XIP) capability without the need for code shadowing on an SRAM.

Serial Interface Architecture- Nibble-wide multiplexed I/O’s with SPI-like serial command structure: Mode 0 and Mode 3
x1/x2/x4 Serial Peripheral Interface (SPI) Protocol and SQI protocol
Burst Modes- Continuous linear burst, 8/16/32/64 Byte linear burst with wrap-around
Page-Program- 256 Bytes per page in x1 or x4 mode