Wednesday, June 13, 2018
Winbond Electronics has announced the introduction of the W25N01JW, a high-performance, 1.8V serial NAND flash memory IC delivering a new high in data-transfer rates: 83MB/s via a quad serial peripheral interface (QSPI). The new high-performance serial NAND technology also supports a two-chip dual quad interface which gives a maximum data transfer rate of 166MB/s.
The new Winbond 1.8V W25N01JW chip can replace SPI NOR flash memory in automotive applications, such as data storage for instrument clusters or the center information displays (CIDs), the company indicated. This is important for automotive OEMs because the adoption of more sophisticated graphics displays in the instrument cluster, and larger display sizes of seven inches and above in the CID, is increasing system memory requirements to capacities of 1Gbit and higher, the company continued. At these capacities, serial NAND flash has a markedly lower unit cost than that of SPI NOR flash, and occupies a smaller board area per megabit of storage capacity.
SPI NOR flash has been the preferred memory technology in automotive displays for many years because of its high read speed, which supports the fast boot requirements of automotive user interfaces, and because of its high reliability and long data retention. By raising the data transfer rate of its serial NAND technology to 83MB/s - matching the read speed of automotive SPI NOR flash - Winbond claimed its new W25N01JW can support fast boot operation and the demanding requirements of sophisticated graphics applications.
The W25N01JW also meets strict automotive requirements for quality and reliability, Winbond noted. Built with high-reliability single-level sell (SLC) memory technology, and implementing 1-bit error correction code (ECC) on all read and write operations, it complies with the endurance, retention and quality requirements of the AEC-Q100 standard and relevant JEDEC specifications.
The W25N01JW device operates from minus 40- to 105-degree Celcius and retains data for 10 years at 85-degrees C after 1,000 program/erase cycles, whereas eMMC can only retain data for a fraction of that time under these conditions even when used in SLC mode, which are today widely used for data storage in the CIDs of high-end vehicles.
"Cars' large and attractive displays need higher memory capacity, beyond the 'sweet spot' of SPI NOR Flash, which is good for up to 512Mbits," said William Chen, deputy director of the Flash Product Marketing Division at Winbond. "For systems that require high-speed memory in capacities of 1Gbit or higher, Winbond's high-performance Serial NAND Flash is the new best choice for automotive OEMs, offering a combination of lower unit cost, smaller size and excellent reliability and data retention."
The W25N01JW is available for sampling today in a capacity of 1Gbit. A two-chip implementation in dual-quad I/O mode provides 2Gbits of memory capacity and a maximum data transfer rate of 166MB/s. The chip is available in industrial grade and in an extended-temperature automotive grade version operating at up to 105-degree Celcius. It is compatible with standard SPI NAND flash protocols. It is housed in standard 8x6mm WSON and TFBGA packages that are footprint-compatible with standard SPI NOR flash products.
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