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ST extends serial flash family

Posted: 25 Nov 2004 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? st? parameter storage? serial flash memoy? m45pe10?

STMicroelectronics (ST) introduced two new devices for data and parameter storage within its family of high-speed, low-voltage, serial flash memories.

The new M45PE10 and m45pe20 will be used in applications involving a large amount of rapidly changing parameter data, such as digital answering machines, pagers, video game systems and electronic toys. These 1Mb and 2Mb devices maintain continuity with the serial EEPROM portfolio and complement ST's extensive range of M25P serial flash devices for code storage.

The M45PE family offers fine granularity that allows fast-changing data to be stored with minimum system overhead. Each page of 256 bytes can be individually erased and programmed. Furthermore, a Write instruction offers the possibility of updating between 1 and 256 bytes of data. A 256-byte page can be written in 11ms, programmed in 1.2ms and erased in 10ms. In addition, the architecture of the M45PE is optimized to reduce the application software to a minimum, without the need for specific data storage management software in flash.

These devices are accessed through a standard SPI bus with an enhanced clock speed of 25MHz for data transfer. They operate on a 2.7V to 3.6V supply voltage, and, to reduce power consumption, feature a deep power-down mode that draws only 1?A. The serial bus architecture dramatically lowers the pin count of the bus master, so lowering overall system costs.

Use of these new memories will also extend to portable scanners, fax machines, digital cameras, cellular phones, voice memo recorders, PDAs, MP3 players/recorders, and GPS and measurement systems.

The M45PE10 and M45PE20 are available in the S08 Narrow (150mils) package, and in the thin 8-pin MLP which achieves an SO8 footprint and uses the company's ECOPACK Pb-free technology for RoHS-compliance. These devices are specified for the -40C to 85C operating temperature range. Minimum data retention is 20 years and write endurance is 100,000 cycles.

ST's Serial Flash M45PE family now offers 1Mb, 2Mb, 4Mb and 8Mb products. A 16Mb device is planned for 2005. Samples of the new devices are available now and volume production is ramping-up. For volume quantities, the M45PE10 is priced at $1.10 and the M45PE20 at $1.25. Further information on the M45PE family is available online.

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