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.