Auto Electronics

STMicroelectronics enhances 32-Mb automotive flash memory chip

STMicroelectronics ( has introduced an enhanced version of its 32Mb flash memory chip for powertrain and transmission-control modules and other high-performance automotive systems that use the latest generation of 32-bit microcontrollers. A data sheet describing the M58BW32F is available at and additional information is available at

Manufactured with an advanced 0.11µm technology, Automotive-Grade certified, and qualified to the AEC-Q100 standard (revision F), the M58BW32F offers access times as low as 45nsec over the full automotive temperature range (-40 to 125°C for the packaged device, -40 degrees C to +150°C in bare die form). Maximum burst frequency is 75MHz across the full temperature range.

The memory chip features a wide 32-bit data bus and operates on a nominal 3.3V memory core supply. Enhanced protection techniques include flexible hardware/software protection, a secured command set for Modify operations, a Bank Erase command and a one-shot program from an internal buffer (loaded up to an 8 x Double word maximum). For security, each die embeds a unique device ID to allow the use of cryptographic algorithms to protect against illegal software modifications.

The chip is offered in an LBGA80 package that uses ST’s ECOPACK RoHS-compliant lead-free technology, as well as in Certified Bare Die form. All devices are manufactured in ST facilities qualified to ISO/TS 16949:2002. Engineering samples are available for evaluation now, with volume production planned for Q3 2006. A 16-Mbit device is planned for the second half of 2006.

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