A memory circuit achieves much higher bandwidth and reduced power consumption
by
maintaining the maximum number of memory arrays open simultaneously. Circuit area
is also saved by sharing bit line sense amplifiers between adjacent arrays. When
selected, an array remains open until a different row in the same array or an array
adjacent to it is selected. Thus, as long as access is made to an open row of every
other array, access time and power are reduced by eliminating the need to turn
arrays on and off.