公开(公告)号：US20170345469A1

公开(公告)日：2017-11-30

申请号：US15499876

申请日：2017-04-27

Applicant: MEDIATEK INC.

Inventor： Chi-Hao Hong ,  Dao-Ping Wang ,  Yi-Wei Chen ,  Yi-Ping Kuo ,  Shu-Lin Lai

IPC: G11C7/12 ,  G11C7/10 ,  G11C7/06

CPC classification number: G11C7/12 ,  G11C7/06 ,  G11C7/065 ,  G11C7/08 ,  G11C7/109

Abstract: A pre-processing circuit is used for pre-processing a data-line voltage representative of a data output of a memory device. The pre-processing circuit includes a pre-charging circuit and a clamping circuit. The pre-charging circuit pre-charges a data line to adjust the data-line voltage at the data line that is coupled to the memory device. The clamping circuit clamps the data-line voltage to generate a clamped data-line voltage when the data-line voltage is pre-charged to a level that enables a clamping function of the clamping circuit, wherein the clamped data-line voltage is lower than a supply voltage of the pre-processing circuit. The clamping circuit includes a feedback circuit that feeds back a control voltage according to the data-line voltage at the data line, and further reduces its direct current (DC) leakage when the data-line voltage is clamped, wherein the clamping function of the clamping circuit is controlled by the control voltage.

公开(公告)号：US10176853B2

公开(公告)日：2019-01-08

申请号：US15499876

申请日：2017-04-27

Applicant: MEDIATEK INC.

Inventor： Chi-Hao Hong ,  Dao-Ping Wang ,  Yi-Wei Chen ,  Yi-Ping Kuo ,  Shu-Lin Lai

IPC: G11C7/12 ,  G11C7/06 ,  G11C7/10 ,  G11C7/08

Abstract: A pre-processing circuit is used for pre-processing a data-line voltage representative of a data output of a memory device. The pre-processing circuit includes a pre-charging circuit and a clamping circuit. The pre-charging circuit pre-charges a data line to adjust the data-line voltage at the data line that is coupled to the memory device. The clamping circuit clamps the data-line voltage to generate a clamped data-line voltage when the data-line voltage is pre-charged to a level that enables a clamping function of the clamping circuit, wherein the clamped data-line voltage is lower than a supply voltage of the pre-processing circuit. The clamping circuit includes a feedback circuit that feeds back a control voltage according to the data-line voltage at the data line, and further reduces its direct current (DC) leakage when the data-line voltage is clamped, wherein the clamping function of the clamping circuit is controlled by the control voltage.