DATA OUTPUT CIRCUIT OF A SEMICONDUCTOR APPARATUS

摘要

A data output circuit of a semiconductor apparatus includes a pull-up driver including a plurality of leg units configured to be controlled in respective resistance values in response to code signals, be controlled in an entire resistance value as one or more of the plurality of leg units are selectively activated in response to selection signals, and configured to apply an output voltage with an output voltage level selected according to a control of the entire resistance value among a plurality of output voltage levels, to a data output pad; a control block configured to generate the selection signals in response to mode register signals; and a code generator configured to generate the code signals according to an external resistor.

主权项

1. A data output circuit of a semiconductor apparatus, comprising:
a pull-up driver including a plurality of leg units configured to be controlled in respective resistance values in response to code signals, be controlled in an entire resistance value as one or more of the plurality of leg units are selectively activated in response to selection signals, and configured to apply an output voltage with an output voltage level selected according to a control of the entire resistance value among a plurality of output voltage levels, to a data output pad; a control block configured to generate the selection signals in response to mode register signals; and a code generator configured to generate the code signals according to an external resistor.