A limiting circuit is constituted by {HEAD ~ a clamp circuit} which limits {TAIL ~ a potential} of a write word line to a fixed value or a lower value 
A limiting circuit is constituted by { HEAD ~ a clamp circuit } which limits { TAIL ~ a potential } of a write word line to a fixed value or a lower value
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH