Memory device and pre-charge method

A memory device comprising:

• a memory array;
• a driving circuit coupled to and driving the memory array;
• and
• a memory control circuit coupled to and controlling the driving circuit,
• wherein
• in a pre-charge phase,
• under control of the memory control circuit, the driving circuit applies a plurality of independently-controlled pre-charge voltages to a plurality of turned-on word lines of the memory array, wherein the plurality of pre-charge voltages are selected among a plurality of reference pre-charge voltages;
• and
• under control of the memory control circuit, the driving circuit applies a plurality of turned-off voltages to a plurality of turned-off word lines of the memory array,
• wherein on a predetermined direction, a target turned-on word line among the plurality of turned-on word lines is adjacent to a next adjacent target turned-off word line among the plurality of turned-off word lines;
• and a voltage difference from the target turned-on word line toward the next adjacent target turned-off word line is smaller than a predetermined reference voltage difference.