ATF20V8BQL datasheet(7/22 Pages) ATMEL

7 / 22 page

ATF20V8B(Q)(L)

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 registered or com-

binatorial output or I/O, or as an input. For a registered out-

put or I/O, the output is enabled by the OE pin, and the

allocated to the sum term. For a combinatorial 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

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

Tango-PLD

G20V8

ATF20V8BQL Datasheet(PDF) 7 Page - ATMEL Corporation

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