Lexington, Mass. STMicroelectronics has launched a
16-Mbit serial flash memory chip with 4-Kbyte sectors. The unit is aimed at PC BIOS applications as well as optical disk drives, digital voice recorders, networking products and set-top boxes.
The new M25PE16 is accessed through an SPI-compatible serial bus
operating at up to 50MHz and is the first Serial Flash device from ST with 4 Kbyte subsectors.
The use of a four-wire high-speed serial interface rather than a parallel
memory bus delivers dramatic savings in board space and costs, needing a
smaller package and fewer pins, according to the company.
The memory is organized as 32 sectors. Each sector contains 256 pages and each page is 256 bytes wide. Moreover, each
sector is divided into 16 subsectors of 16 pages. The memory can be written
or programmed 1 to 256 bytes at a time, using the Page Write or Page Program
instructions. It can be erased a page at a time, a subsector at a time, a
sector at a time, or as a whole using the Bulk Erase instruction. The fine
Erase and Program granularity makes it ideal for storage of BIOS parameters.
The memory offers enhanced protection features to prevent accidental
programming or erasure. The memory can be Write Protected by either hardware
or software using mixed volatile and non-volatile protection features,
depending on the application needs. The protection granularity is of either
64-Kbytes (sector granularity) or 4-Kbytes (subsector granularity inside
sector 0 and sector 31).
The M25PE16 operates on a single supply voltage of 2.7V to 3.6V and is
specified for the 40 to +85 degrees C operating temperature range. It
features a 1-microamp deep power-down mode to reduce system power
consumption, and includes a JEDEC standard Two-Byte electronic signature for easy device identification. Data retention is specified as greater than 20 years, with more than 100,000 Erase/Program cycles per sector.
Samples of the M25PE16, in S08W and the very thin MLP8, 5mm x 6mm,
RoHS-compliant ECOPACK packages, are available now, with volume production
planned for January 2007. Pricing is $1.20 in quantities of 100,000.
Additional information on the memory devices is available at datasheet.
STMicroelectronics, Inc. (781) 861 2650