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GAL20V8C-5LJN Datasheet(PDF) 7 Page - Lattice Semiconductor |
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GAL20V8C-5LJN Datasheet(HTML) 7 Page - Lattice Semiconductor |
7 / 25 page Specifications GAL20V8 7 In the Complex mode, macrocells are configured as output only or I/O functions. Architecture configurations available in this mode are similar to the common 20L8 and 20P8 devices with programmable polarity in each macrocell. Up to six I/Os are possible in this mode. Dedicated inputs or outputs can be implemented as subsets of the I/O function. The two outer most macrocells (pins 15 & 22) do not have input capability. De- signs requiring eight I/Os can be implemented in the Registered mode. All macrocells have seven product terms per output. One product term is used for programmable output enable control. Pins 1 and 13 are always available as data inputs into the AND array. The JEDEC fuse numbers including the UES fuses and PTD fuses are shown on the logic diagram on the following page. Note: The development software configures all of the architecture control bits and checks for proper pin usage automatically. Combinatorial I/O Configuration for Complex Mode - SYN=1. - AC0=1. - XOR=0 defines Active Low Output. - XOR=1 defines Active High Output. - AC1=1. - Pin 16 through Pin 21 are configured to this function. Combinatorial Output Configuration for Complex Mode - SYN=1. - AC0=1. - XOR=0 defines Active Low Output. - XOR=1 defines Active High Output. - AC1=1. - Pin 15 and Pin 22 are configured to this function. XOR XOR Complex Mode |
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Similar Description - GAL20V8C-5LJN |
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