FPGA configuration serial EEPROM providing an easy-to-use, cost-effective configuration memory for FPGAs. It comes packaged in a 28-pin 400-mils wide FP package. A simple serial-access procedure configures one or more FPGA devices via the configurator.

EE Programmable Serial Memories Designed to Store Configuration Programs for
Altera® FLEX® and APEX™ Field Programmable Gate Arrays (FPGA)
Supports both 3.3V and 5.0V Operating Voltage Applications
In-System Programmable (ISP) via 2-wire Bus
Simple Interface to SRAM FPGAs
Compatible with the Atmel
AT6000, AT40K and AT94K Devices, Altera FLEX,
APEX Devices, ORCA® FPGAs, Xilinx® XC3000, XC4000, XC5200, Spartan®,
Virtex™ FPGAs, Motorola MPA1000 FPGAs
Cascadable