ATF16V8B-25SC 데이터 시트보기 (PDF) - Atmel Corporation

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ATF16V8B-25SC

High Performance Flash PLD

Atmel Corporation 

ATF16V8B

ATF16V8B Complex Mode

PAL Device Emulation/PAL Replacement

In the Complex Mode, combinatorial output and I/O func-

tions are possible. Pins 1 and 11 are regular inputs to the

array. Pins 13 through 18 have pin feedback paths back to

the AND-array, which makes full I/O capability possible.

Pins 12 and 19 (outermost macrocells) are outputs only.

They do not have input capability. In this mode, each

macrocell has seven product terms going to the sum term

and one product term enabling the output.

Complex Mode Option

Combinatorial applications with an OE requirement will

make the compiler select this mode. The following devices

can be emulated using this mode:

16L8

16H8

16P8

ATF16V8B Simple Mode

PAL Device Emulation / PAL Replacement

In the Simple Mode, 8 product terms are allocated to the

sum term. Pins 15 and 16 (center macrocells) are perma-

nently configured as combinatorial outputs. Other macro-

cells can be either inputs or combinatorial outputs with pin

feedback to the AND-array. Pins 1 and 11 are regular in-

puts.

Simple Mode Option

The compiler selects this mode when all outputs are com-

binatorial without OE control. The following simple PALs

can be emulated using this mode:

10L8

10H8

10P8

12L6

12H6

12P6

14L4

14H4

14P4

16L2

16H2

16P2

1-15

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