The NV25640WF is a 64-Kb Serial CMOS EEPROM in a small-footprint Wettable Flank UDNF-8 package. This features a 64-byte page write buffer and supports the Serial Peripheral Interface (SPI) protocol. The device is enabled through a Chip Select (
) input. In addition, the required bus signals are clock input (SCK), data input (SI) and data output (SO) lines. The
input may be used to pause any serial communication with the NV25640 device. The device features software and hardware write protection, including partial as well as full array protection.

• Automotive Temperature Grade 1 (-40°C to +125°C)
• 2.5 V to 5.5 V Supply Voltage Range
• Wettable Flank UDFN Package Supports Auto-Optical Inspection
• 10 MHz SPI Compatible
• SPI Modes (0,0) & (1,1)
• 64-byte Page Write Buffer
• Self-timed Write Cycle
• Hardware and Software Protection
• NV Prefix for Automotive and Other Applications Requiring Site and Change Control
• Block Write Protection
• - Protect ¼, ½ or Entire EEPROM Array
• Low Power CMOS Technology
• 1,000,000 Program/Erase Cycles
• 100 Year Data Retention
• This Device is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant