公开(公告)号：US20020131298A1

公开(公告)日：2002-09-19

申请号：US10085987

申请日：2002-02-27

Applicant: STMicroelectronics Limited

Inventor： William Bryan Barnes

IPC: G11C011/34

CPC classification number: H03K5/249 ,  G11C7/065 ,  H03K3/356139 ,  H03K5/1534 ,  H03K19/0963

Abstract: To establish whether a precharged node remains isolated or alternatively is subject to discharge, the conventional circuit allows uncertainty. For a period after evaluation starts, the conventional circuit will give a tentative result that may subsequently turn out to be wrong. During evaluation power is dissipated. A differential offset dynamic comparator and timing circuit are used to evaluate whether the node is being discharged. Because the comparator has an offset, much smaller deviations from the precharge potential can be sensed: because it is dynamic, it does not consume steady state current. The timing circuit permits precise knowledge of when to look at the output: before the timing period has elapsed, the result is known to be invalid.

Abstract translation: 为了确定预充电节点是否保持隔离或者可替代地进行放电，常规电路允许不确定性。 在评估开始一段时间后，常规电路将给出一个可能随后证明是错误的初步结果。 评估过程中耗电。 差分偏移动态比较器和定时电路用于评估节点是否正在放电。 由于比较器具有偏移，因此可以感测到与预充电电位相差较小的偏差：因为它是动态的，所以它不消耗稳态电流。 定时电路可以准确了解何时查看输出：在定时周期过去之前，已知结果无效。