Accordingly, {TAIL ~ a small scale refresh counter circuit} with {HEAD ~ high degree} of flexibility in control can be realized 
Accordingly , { TAIL ~ a small scale refresh counter circuit } with { HEAD ~ high degree } of flexibility in control can be realized
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH