OUTPUT CIRCUIT OPERATING IN A SMALL CURRENT, AN INPUT AND OUTPUT SYSTEM AND A DATA INPUT AND OUTPUT METHOD THEREOF

摘要

Method is output and input the invention discloses low current operation, output circuit and input-output system and using its data. Data outputting unit (11i i, i=1~8) is that the real data (RDATI, i=1~8) exported from memory cell 19 receives and corresponding ephemeral data (TDATI, i=1~8) export. Control unit 15 generates real data (RDATi) real data magnitude relationship, and the number (RDATi) of the voltage down control signals detected (XCON) has data value " 1 ", and wherein the number of data value has " 0 " do. Signal (XCON) control data outputting unit (11_i) is controlled, and determines ephemeral data (TDATi) from initial data (RDATi). O pads part (13_i, i=1 ~ 8) sends data (ADATi, i=1 ~ 8) in response to transient data (TDATi). And o pads part (13i) has open drain structure. It assists o pads unit 17 to receive control signal (XCON), provides signal to external display (XIN).