| 摘要 |
<p>PURPOSE:To prevent a through current and malfunction from being generated, by preventing the lowering of potential due to the off-leak current of a line in a DROM circuit from being generated by two transistors TRs inserted between the bit line and a power source. CONSTITUTION:Since the TR 101 is turned ON and the TR 102 is turned ON when a pre-charge signal PG becomes inactive, the potential of a power source line 40 is supplied to the bit line 28. Consequently, the off-leak current I0 flows from the bit line 28, but, a current supplying capacity, by third and fourth TRs 101 and 102 exceeds remarkably the current I0, therefore, the potential of the bit line 28 is held at a logic 1 without being lowered less than that of the power source line 40, and no through current more than a leak current flows from an inverter 21.</p> |
