PLC42VA12

Philips Semiconductors Programmable Logic Devices Product specification CMOS programmable multi-function PLD (42 × 105 × 12) PLC42VA12 DESCRIPTION The new PLC42VA12 CMOS PLD from Philips Semiconductors exhibits a unique combination of the two architectural concepts that revolutionized the PLD marketplace. The Philips Semiconductors unique Output Macro Cell (OMC) embodies all the advantages and none of the disadvantages associated with the “V” type Output Macro Cell devices. This new design, combined with added functionality of two programmable arrays, represents a significant advancement in the configurability and efficiency of multi-function PLDs. The most significant improvement in the Output Macro Cell structure is the implementation of the register bypass function. Any of the 10 J-K/D registers can be individually bypassed, thus creating a combinatorial I/O path from the AND array to the output pin. Unlike other “V” type devices, the register in the PLC42VA12 Macro Cell remains fully functional as a buried register. Both the combinatorial I/O and buried register have separate input paths (from the AND array). In most V-type architectures, the register is lost as a resource when the cell is configured as a combinatorial I/O. This feature provides the capability to operate the buried register independently from the combinatorial I/O. The PLC42VA12 is an EPROM-based CMOS device. Designs can be generated using Philips Semiconductors SNAP PLD design software packages or on...