Patent ID: 9576936
Date: 2017-02-21
CPC Classifications: G01R,H01L,H03K

Claim:
1. A semiconductor system comprising: a controller providing a control signal and a chip select signal; a semiconductor apparatus having stack chips, wherein the stack chips receive the control signal and the chip select signal, respectively; wherein the semiconductor apparatus includes: a master chip including a first signal transfer unit configured to process an input signal in response to the chip select signal, a replica circuit unit to process the input signal in response to the control signal, and a signal output unit configured to receive an output signal of the first signal transfer unit and an output signal of the replica circuit unit; a slave chip electrically connected to the master chip by TSVs (through silicon vias), the slave chip including a second signal transfer unit configured to process the input signal inputted through the TSVs and to output the input signal to the signal output unit, wherein the signal output unit is configured to select one of the output signal of the first signal transfer unit, the output signal of the second signal transfer unit, and the output signal of the replica circuit unit.