A 8 bit binary counter from 0 to 0.255 :

PB > Value > CV flip-flop 1 > CV flip-flop 2 > … CV flip-flop 8

CV flip-flop 1 > CV invert 1 > Multiplier 1 > Out
CV flip-flop 2 > CV invert 2 > Multiplier 2 > Out
…
CV flip-flop 8 > CV invert 8 > Multiplier 8 > Out

Multiplier 1 is set to 0.0010
Multiplier 2 is set to 0.0020
Multiplier 3 is set to 0.0040
Multiplier 4 is set to 0.0080
Multiplier 5 is set to 0.0160
Multiplier 6 is set to 0.0320
Multiplier 7 is set to 0.0640
Multiplier 8 is set to 0.1280