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ATF20V8BQ Datasheet(PDF) 7 Page - ATMEL Corporation |
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ATF20V8BQ Datasheet(HTML) 7 Page - ATMEL Corporation |
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7 / 17 page  ATF20V8B 7 Note: 1. Only applicable for version 3.4 or lower. ATF20V8B Registered Mode PAL Device Emulation / PAL Replacement The registered mode is used if one or more registers are required. Each macrocell can be configured as either a reg- istered or combinatorial output or I/O, or as an input. For a registered output or I/O, the output is enabled by the OE pin, and the register is clocked by the CLK pin. Eight prod- uct terms are allocated to the sum term. For a combinato- rial output or I/O, the output enable is controlled by a product term, and seven product terms are allocated to the sum term. When the macrocell is configured as an input, the output enable is permanently disabled. Any register usage will make the compiler select this mode. The following registered devices can be emulated using this mode: 20R8 20RP8 20R6 20RP6 20R4 20RP4 Registered Mode Operation Compiler Mode Selection Registered Complex Simple Auto Select ABEL, Atmel-ABEL P20V8R P20V8C P20V8 P20V8 CUPL G20V8MS G20V8MA G20V8 G20V8A LOG/iC GAL20V8_R(1) GAL20V8_C7(1) GAL20V8_C8(1) GAL20V8 OrCAD-PLD “Registered” “Complex” “Simple” GAL20V8 PLDesigner P20V8 P20V8 P20V8 P20V8 Tango-PLD G20V8 G20V8 G20V8 G20V8 |
Similar Part No. - ATF20V8BQ |
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Similar Description - ATF20V8BQ |
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