A phase change memory device includes a memory cell, first word line
conductor and a second word line conductor, and first and second access
devices responsive to the first and second word line conductors
respectively. Control circuits are arranged to access the memory cell for
read operations using only the first word line conductor to establish a
current path from the bit line through the memory cell to a source line
through the first access device, and to access the memory cell for
operations to reset the memory cell using both the first and second
access devices to establish a current path from the bit line through the
memory cell to two source lines.