Patent ID: 9583214
Date: 2017-02-28
CPC Classifications: G11C

Claim:
1. A semiconductor circuit, comprising: a test control unit configured to generate a driving activation signal, a sensing activation signal, and a plurality of compensation control signals in response to a command and an address, wherein the command and the address are provided from an external tester; a pad; a driver configured to drive the pad to a predetermined level in response to activation of the driving activation signal; a compensation unit configured to apply capacitance, a value of the capacitance is changed by the plurality of compensation control signals, to the pad; and a sensing unit configured to compare a voltage level of the pad with a reference voltage in response to activation of the sensing activation signal, and output a sensing signal, wherein the external tester places the pad in a floating state for a predetermined time by deactivating the driving activation signal using the command and the address, and activates the sensing activation signal after the predetermined time has passed.