| 摘要 |
<p>A data writing circuit includes: a transfer gate (TG) selecting a bit line (BLO) of a virtually grounded cell array; a latch circuit (L) connected to the bit line (BLO) via the transfer gate (TG) for latching the data to be written, given to the bit line; a switching circuit (PM) which is connected between the bit line (BLO) and a program power source (VPROG) and is activated in accordance with the data to be written which has been latched by the latch circuit (L), to thereby supply the program power source (VPROG) to the bit line (BLO). This circuit, in accordance with the data to be written, sets the bit line (BLO) to which a memory cell (M) is connected, to a state of being applied by the program power source (VPROG) or a floating state. <IMAGE></p> |
