14
0364J–PLD–7/05
ATF16V8B/BQ/BQL
11.3
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 combinato-
rial 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 combinatorial without OE control. The fol-
lowing simple PALs can be emulated using this mode:
10L8 10H8 10P8
12L6 12H6 12P6
14L4 14H4 14P4
16L2 16H2 16P2
Figure 11-6. Simple Mode Option
Note:
* Pins 15 and 16 are always enabled.
Summary of Contents for ATF16V8B
Page 11: ...11 0364J PLD 7 05 ATF16V8B BQ BQL Figure 11 3 Registered Mode Logic Diagram ...
Page 13: ...13 0364J PLD 7 05 ATF16V8B BQ BQL Figure 11 5 Complex Mode Logic Diagram ...
Page 15: ...15 0364J PLD 7 05 ATF16V8B BQ BQL Figure 11 7 Simple Mode Logic Diagram ...
