For each sampled and held analog input signal Sa, the set of references used to vary voltages for writing is {HEAD ~ Sa} ±1/2 LSB, where LSB is {TAIL ~ the difference} between two adjacent states 
For each sampled and held analog input signal Sa , the set of references used to vary voltages for writing is { HEAD ~ Sa } ±1/2 LSB , where LSB is { TAIL ~ the difference } between two adjacent states
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH