| 主权项 |
1. An integrated circuit, comprising:
an internal power line; a no-connection (NC) pad; a switch configured to electrically connect the internal power line with the NC pad to supply a first external voltage to the internal power line through the NC pad in response to a control signal; and a voltage pumping circuit configured to supply a pumping voltage to the internal power line by pumping a second external voltage when the control signal is disabled, wherein the control signal is enabled while the integrated circuit performs a test operation, wherein the second external voltage includes a power supply voltage and a ground voltage supplied to the integrated circuit for a normal operation. |
