| 摘要 |
<p>PURPOSE:To increase the operation speed in any access method by equalizing a bit line and a reference line at the time of the stand-by state and setting them to a voltage approximately equal to the middle between the '0' discrimination level and the '1' discrimination level of a sense amplifier. CONSTITUTION:Q13 to Q15... are N-channel transistors in the circuit diagram of a differential sense amplifying circuit and its attached circuit, and a threshold VTH is used to reduce the supply voltage to an about middle between the '0' discrimination level and the '1' discrimination level of the sense amplifier. N-channel TRs Q11 and Q12 have gates connected to a chip enable signal Ce and have drains connected to point G and have sources connected to points A and F respectively. N-channel TRs Q11 and Q12 are made conductive to charge the bit line and the reference line to prescribed potentials at the time of the stand-by state (Ce='H'). Thus, the operation speed is increased in any access method.</p> |
