| 摘要 |
PURPOSE: A data input and output method using an output circuit operating in a small current is provided to minimize a current consumption by an open-drain output circuit and an input and output system. CONSTITUTION: The output circuit operating in a small current comprises: data output elements(11_i,i=1-8) for receiving read data(RDATi,i=1-8) outputted from a memory element(19) and generating corresponding temporary data(TDATi,i=1-8); a control element(15) for generating a control signal(XCON) after sensing which is greater than the other between the number of real data having a "0" data value and the number of real data having a "1" data value in which the control signal(XCON) controls the data output elements(11_i) and determines the temporary data(TDATi) and the real data(RDATi); output pad elements(13_i,i=1-8) for generating transmission data(ADATi,i=1-8) in response to the temporary data(TDATi), the pad elements having an open-drain structure; and an auxiliary pad element(17) for receiving the control signal(XCON) and supplying an indication signal(XIND) to the exterior.
|
