The ispLSI 3256A is a High-Density Programmable Logic Device containing 384 Registers, 128 Universal I/O pins, five Dedicated Clock Input Pins, eight Output Routing Pools (ORP) and a Global Routing Pool (GRP) which allows complete inter-connectivity between all of these elements. The ispLSI 3256A features 5V in-system programmability and in-system diagnostic capabilities. The ispLSI 3256A offers non-volatile reprogrammability of the logic, as well as the interconnect to provide truly reconfigurable systems.