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Serial flash boasts 80% less PCB space

Posted: 02 Dec 2011 ?? ?Print Version ?Bookmark and Share

Keywords:serial flash? space-critical application? mobile computing?

Winbond Electronics Corp. has released a family of SpiFlash serial flash memories that claims to have the industry's smallest packages per density. According to the company, applications of the devices include cameras, digital video, gaming, GPS, wireless modules, smartphones, Bluetooth headsets and other mobile/handheld products with densities from 512Kb to 16Mb.

Geared for space-critical applications, the RoHS-compliant SpiFlash memories boast package dimensions as small as 3.4mm2 that meet the needs of the rapidly growing mobile-computing consumer electronics market, stated Winbond. Available in eight-pin ultra-thin small-outline no-lead (USON) and wafer-level-ball-grid-array (WLBGA) forms, the devices occupy less than 20 percent of the space used by ordinary 30mm2 WSON and SOIC packages, added the company.

The USON 6mm2 (2 x 3 x 0.55mm) SpiFlash memories come in densities of 512Kb, 1Mb, 2Mb, 4Mb and 8Mb in 2.5V or 3V versions. Power-saving 1.8V versions are also available for 2Mb and 4Mb densities. The 8Mb USON is the industry's highest density available in such a package, noted Winbond. The WLBGA devices that use a Wafer-Level-Chip-Scale-Packages (WLCSP) assembly process are available in 8Mb (3.4mm2) and 16Mb (4.8mm2) densities that operate at 1.8V. The WLBGAs measure 0.47mm and use 11 percent and 16 percent the space, respectively, of a WSON or SOIC package, making them the smallest and thinnest packages on the market today, the company claimed. The WLBGA packages also provide design security by preventing access to the chips' signals once mounted to PCBs.

Winbond's W25X (Single & Dual SPI) and W25Q (Single, Dual and Quad SPI), USON devices are sampling now, with some versions in full production, and priced from $0.32 to $0.57 in 10,000 unit quantities. The W25Q80BWBYIG (8Mb) and W25Q16DWBYIG (16Mb) WLBGA devices are in production and priced from $0.68 to $0.97 in 10,000 unit quantities.�The devices are available worldwide, with target markets in Asia that include China, Taiwan and Korea.

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