EP1810 devices offer LSI density, TTL-equivalent speed, and low power consumption. EP1810 devices have 48 macrocells, 16 dedicated input pins, and 48 I/O pins. EP1810 devices are divided into four quadrants, each containing 12 macrocells. Of the 12 macrocells in each quadrant, 8 have quadrant feedback and are “local” macrocells. The remaining 4 macrocells in the quadrant are “global” macrocells. Both local and global macrocells can access signals from the global bus, which consists of the true and complement forms of the dedicated inputs and the true and complement forms of the feedbacks from the global macrocells.
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