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Multi-I/O SPI flash enables faster data transmission

Posted: 25 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:flash memory? SPI multi-I/O memory? MirrorBit?

Spansion Inc. has rolled out a new family of serial peripheral interface (SPI) devices based on 90nm NOR technology. The MirrorBit SPI Multi-I/O flash memory devices range in densities from 32- up to 128-megabits. SPI devices read information serially, or one bit at a time, requiring fewer connections and pins. This lowers the cost and simplifies board layout, according to Spansion.

Each device from Spansion supports the option for single (one-bit data bus), dual (two-bit data bus) or quad (four-bit data bus) serial I/O data transmission. With multiple I/O, devices can transmit and receive data either one, two or four bits at a time, enabling faster speeds while still requiring only eight total pins or four active pins to retain the original benefits of single I/O SPI, according to Spansion.

Performances of up to 40MBps (80MHz per I/O in quad I/O mode) makes the MirrorBit SPI Multi-I/O family capable of executing code in-place (XIP) for a variety of industrial and consumer electronics applications. The performance matches or exceeds conventional parallel I/O NOR flash memory, according to Spansion.

Spansion's devices are aimed for optical disk drives, PCs and high-end printers, as well as networking and home entertainment equipment such as digital TV, DVD players/recorders and STBs.

The 32Mbit S25FL032P MirrorBit SPI Multi-I/O device is available in 8-pin SOIC (208 mil), 16-pin SOIC, USON (6mm x 5mm) or WSON (6mm x 8mm) packages. The 64-Mbit S25FL064P and 128 Mb S25FL129P MirrorBit SPI Multi-I/O devices are available in 16-pin SOIC or 8-contact WSON (6mm x 8mm) packages.

The 32Mbit device is in full production now. The company expects to sample and be in production of the 64Mbit device in June 2009, and the 128Mbit device in Q4 09.

- Mark LaPedus
EE Times

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