There are 416 product terms available. Four product terms
are input to each sum term. The three sum terms per logic
cell can be combined to provide up to twelve product terms,
combinatorial and registered. Independent of output config-
uration, the two flip-flops are always usable, and always
have at least four product term inputs.
Product terms are available providing asynchronous
resets, flip-flop clocks, and output enables. One reset and
one clock term are provided per flip-flop, with one enable
term per output. Eight product terms provide local synchro-
nous presets, divided up into banks of four and eight flip-
flops. Register preload and buried register observability
simplify testing. The device has an internal power up clear
function.
Functional Logic Diagram ATV2500H/L
2
ATV2500H/L