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Silicon Motion flash disk controllers to power new UFD products

Posted: 07 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Silicon Motion? USB 2.0? flash disk controller? SM321E? SM324?

Silicon Motion announced that it has achieved successful customer implementation of what it touts as the world's fastest USB 2.0 flash disk controller. The Taiwan-based semiconductor company said that its customers will release new products this month which will include USB 2.0 flash disk drives with built-in fingerprint sensors and capacity displays based on its SM321E and SM324 flash disk controller chips.

"The USB flash drive market is very competitive, so we have chosen to bundle as much functionality into our SMT321E and SM324 as possible in order to give customers more flexibility as well as speed up their time to market," said Wallace Kou, president and CEO of Silicon Motion.

The SM324 supports dual-channel data transfer at read speeds of 233x (35MBps) and write speeds of 160x (24MBps). The SM324 also has serial peripheral interface (SPI) which allows for not only Master and Slave modes, but gives customers the flexibility to develop more functionality into their USB flash disk (UFD) products such as GPS, fingerprint sensor, Bluetooth and memory-capacity display.

The SM321E and SM324 controllers also support SLC and MLC NAND flash from Samsung, Hynix, Toshiba and STMicroelectronics as well as flash products from Renesas, Infineon and Micron.

"The advantage of choosing a UFD controller which supports a wider array of flash memory is that the customer has flexibility in choosing its flash supplier. We've seen in the past that failure to secure flash supply can hurt a product's chances of success in the market," commented Kou.

The SM321E and SM324 UFD controllers also offer high system integration, including power-on-reset and regulator in the chip. Post-fabrication support is provided by in-system programming, which allows for firmware upgrades.

Both the SM321E and SM324 devices support Windows (XP/2000/ME/98/98SE), Mac (OS 9 and X) and Linux (kernel 2.4 and above) OSes.

The SM321E is available in a 48-pin LQFP package and a 44-pin LGA package, and supports up to four SLC or MLC NAND flash chips with 4 bytes/528 bytes ECC. The SM324 is available in a 64-pin LQFP package, and supports eight SLC or MLC NAND flash chips with 4 bytes/528 bytes ECC.

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