16 Bit Counter Examples

The following are implemented in XC4000XL-3

Macro CLBs Clock

CB16CLE/D 18 - 20 23 - 24 ns

CC16CLED 19 19 ns

CC16CLE 9 16 ns

X-BLOX: LFSR 9 7 ns

• Simpler functions are faster and smaller

• Carry Logic Counters are generally faster (depends on size)

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