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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
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