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Samsung memory cards with flash memory, card controller

Posted: 29 Sep 2004 ?? ?Print Version ?Bookmark and Share

Keywords:samsung electronics? memory card? flash memory? card controller?

Samsung Electronics Co. Ltd has developed new memory cards that carry both Samsung flash memory and an in-house designed card controller, meeting the standard announced earlier this year by the MultiMediaCard Association (MMCA), an open standard memory card organization.

The new memory cards, introduced in two formatsfull size and reduced size under the respective brands MMC plus and MMC mobile, are backward compatible with the MMC card as the conventional MMC host will configure and adjust to the new interface. MMC plus and MMC mobile are upgraded versions of the MMC specification.

Supporting wider bus widths (x1, x4 and x8) and a clock frequency of 52MHz to enable faster data transition rates, the memory cards are touted to have the industry's fastest read and write performance20MBps for data read function and 15MBps for data write speeds. The MMC mobile voltage support of 1.8V or 3.3V ensures minimum power consumption, Samsung said.

To further speed performance, the company has built a 32bit ARM7 processor into its high speed MMC controller. The data bus has been expanded to 8bits, while the host interface speed has also been improved from the 2.5MBps for most MMC controllers to 52MBps.

The incorporated high speed MMC controller facilitates software upgrades and modifications with a 48KB flash memory in place of the EEPROM, enhancing card compatibility. In addition, Samsung has improved the cache and interleaving algorithm for data processing, boosting the read/write speed and enhancing user convenience. The new MMC controller also takes up less space, supporting the smaller form factors of the MMCs, the company added.

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