ATF16V8BQL-25XC View Datasheet(PDF) - Atmel Corporation
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MFG CO.
'ATF16V8BQL-25XC' PDF : 19 Pages View PDF
ATF16V8B(QL)
ATF16V8B Complex Mode
PAL Device Emulation/PAL Replacement. In the complex
mode, combinatorial output and I/O functions 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.
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
Complex Mode Option
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 permanently configured
as combinatorial outputs. Other macrocells can be either
inputs or combinatorial outputs with pin feedback to the
AND-array. Pins 1 and 11 are regular inputs.
The compiler selects this mode when all outputs are combi-
natorial 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
Simple Mode Option
* - Pins 15 and 16 are always enabled.
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