PALCE26V12

The PALCE26V12 is a 28-pin version of the popular PAL22V10 architecture. Built with low-power, high speed, electrically-erasable CMOS technology, the PALCE26V12 offers many unique advantages.

Device logic is automatically configured according to the user's design specification. Design is simplified by design software, allowing automatic creation of a programming file based on Boolean or state equations.The software can also be used to verify the design and can provide test vectors for the programmed device.

The PALCE26V12 utilizes the familiar sum-of-products (AND/OR) architecture that allows users to implement complex logic functions easily and efficiently. Multiple levels of combinatorial logic can always be reduced to sum-of-products form, taking advantage of the very wide input gates available in PAL devices. The functions are programmed into the device through
electrically-erasable floating-gate cells in the AND logic array and the macrocells. In the unprogrammed state, all AND product terms float HIGH. If both true and complement of any input are connected, the term will be permanently LOW.

The product terms are connected to the fixed OR array with a varied distribution from 8 to 16 across the outputs (see Block Diagram). The OR sum of the products feeds the output macrocell. Each macrocell can be programmed as registered or combinatorial, active high or active low, with registered I/O possible. The flip-flop can be clocked by one of two clock inputs. The output configuration is determined by four bits controlling three multiplexers in each macrocell.

AMD's FusionPLD program allows PALCE26V12 designs to be implemented using a wide variety of popular industry-standard design tools. By working closely with the FusionPLD partners, AMD certifies that the tools provide accurate, quality support. By ensuring that third-party tools are available, costs are lowered because a designer does not have to buy a complete set
of new tools for each device. The FusionPLD program also greatly reduces design time since a designer can use a tool that is already installed and familiar. Please refer to the PLD Software Reference Guide for certified development systems and the Programmer Reference Guide for approved programmers.