AT17LV256

* EE Programmable 65,536 x 1-, 131,072 x 1-, 262,144 x 1-, 524,288 x 1-, 1,048,576 x 1-,
   2,097,152 x 1-, and 4,194,304 x 1-bit Serial
    Memories Designed to Store Configuration Programs for Field Programmable Gate Arrays (FPGAs)
* Supports both 3.3V and 5.0V Operating Voltage Applications
* In-System Programmable (ISP) via Two-Wire Bus
* Simple Interface to SRAM FPGAs (R) (TM)
* Compatible with Atmel AT6000, AT40K and AT94K Devices,
    Altera FLEX , APEX (R) (TM) (TM) (TM) (R) (R) Devices, Lucent ORCA^® ,
     Xilinx XC3000 , XC4000 , XC5200 , Spartan , Virtex FPGAs
* Cascadable Read-back to Support Additional Configurations or Higher-density Arrays
* Very Low-power CMOS EEPROM Process
* Programmable Reset Polarity
* Available in 6 mm x 6 mm x 1 mm 8-lead LAP
   (Pin-compatible with 8-lead SOIC/VOIC Packages), 8-lead PDIP,
   8-lead SOIC, 20-lead PLCC, 20-lead SOIC, 44-lead PLCC and 44-lead TQFP Packages
* Emulation of Atmel's AT24CXXX Serial EEPROMs
* Low-power Standby Mode
* High-reliability
Endurance: 100,000 Write Cycles
Data Retention: 90 Years for Industrial Parts (at 85°C) and 190 Years for Commercial Parts (at 70°C)