Atmel 1-Mb JTAG in-system programmable configuration PROM provides easy-to-use, cost-effective configuration memory for FPGAs. It come in a 20-lead TSSOP package. This PROM can configure one or more FPGA devices using a simple serial-access procedure. It can be programmed with Atmel or industry-standard, third-party, stand-alone programmers such as BP, Data I/O, Hi-Lo, and others.