Serial Flash

SPI Serial Flash - 25 Series
Serial flash is a small, low-power flash memory that uses a serial interface for sequential data access. Serial flash uses fewer wires than parallel flash memories to transfer data to and from a system. A reduction in board space, power consumption and system cost are some of the benefits of the lower pin count interface for serial flash memories. The 25 Series family features an SPI compatible interface and pin-for-pin compatibility with industry standard SPI Serial EEPROM devices in densities from 512 Kbit to 16 Mbit.

Serial Quad I/O™ (SQI™) Flash - 26 Series
The 26 Series serial flash family features a six-wire, 4-bit I/O interface that allows for low-power, high-performance operation in a low pin count package, occupying less board space and ultimately lowering total system costs. Utilizing a Serial Quad Interface (SQI™) and operating at frequencies reaching 80 MHz, the SST 26 Series boosts performance while maintaining the compact form factor of standard serial devices. For cutting edge designs requiring high bandwidth and a compact layout, the SST 26 Series is an ideal solution.

For more information:
Serial Quad I/O™ (SQI™) Flash Product Resources: Press Release and Product Presentation.

LPC Serial Flash - 49 Series
SST's Firmware Flash utilizes a six-wire synchronous nibble-wide data transfer interface, which complies with the standard Intel Low Pin Count (LPC) Interface specifications. SST's Firmware Flash Family of products are designed to store system BIOS in applications such as PCs, graphic cards, set-top boxes, network boards and other embedded CPU applications. The SST49LF00xA devices respond to Intel's proprietary FWH interface protocol used in the Intel 8xx Series Hub Architecture chipsets. The SST49LF0x0A LPC Flash devices respond to the LPC Memory Protocol specified in the standard Intel LPC Interface Specifications 1.0 and 1.1.