{HEAD ~ Circuit} and method for generating {TAIL ~ a sense amplifier} enable signal based on a voltage level of a tracking bitline 
for generating
{ HEAD ~ Circuit } and method for generating { TAIL ~ a sense amplifier } enable signal based on a voltage level of a tracking bitline
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH