Serial Flash
Serial Flash

Serial Flash

Four serial Flash families to meet all of your needs

The AT25Fxxx, AT25FSxxx and AT25DF/26xxx series of products are pin compatible to our complete offering of SPI serial EEPROMs. This gives you the flexibility of increasing your memory size from a low-density serial EEPROM device to a serial Flash without any changes to your board layout.

The full-featured AT45DBxxx DataFlash® family is taking SPI serial Flash to the next level. Advanced features to further enable system integration, robustness and cost reduction include a 128-byte security register, individual sector protection, and a permanent lockdown feature. This popular page erase architecture allows key software routines, parameters and user data to be stored more efficiently, so that more memory space isn't wasted by allocating large sectors for different types of code or data.

AT25Fxxx Family

  • Large sectored erase serial Flash densities of 512 Kbits through 4 Mbits
  • Clock frequencies ranging from 20 MHz to 25 MHz
  • Packaged in both 8-lead narrow-body and wide-body SOICs/MLF
  • Byte or page programming
  • Sector erasable, 64 Kbyte sectors

AT25FSxxx, High Speed, Small Sectors

  • High speed 50 MHz clock frequency
  • Uniform 4 Kbyte erasable sector
  • Byte or page programming
  • Block and sector protection
  • 8-lead SOIC and MLF packages

AT25DF/26xxx Serial Firmware DataFlash

  • High-speed, uniform small block erase serial Flash
  • Block erase sizes of 4 Kbytes, 32 Kbytes, and 64 Kbytes
  • Individual sector protection with global protect/unprotect feature
  • Hardware and software locking
  • Byte and page programming
  • Automatic checking and reporting of program/erase errors
  • JEDEC standard ID
  • Clock frequencies up to 70 MHz
  • Densities of 4 Mbits through 32 Mbits
  • High endurance: 100K program/erase cycles
  • Packaged in both 8-lead narrow-body and wide-body SOICs/MLFs

AT45DBxxx Serial DataFlash

  • High-speed, uniform page erase and small block erase serial Flash
  • Byte alterable using self-contained read-modify-write
  • Densities of 1 Mbit through 64 Mbits
  • Clock frequencies up to 66 MHz
  • High endurance: 100K program/erase cycles per page
  • 128-byte security register
  • Individual sector protection and lockdown
  • JEDEC standard ID
  • Packaged in 8-lead SOICs/CASONs