CSMC0.13um VCC Detector

The present IP is a VCC Detector (VDT) circuit. It detects the core supply and gives a control signal to level shift.

The IP detects the voltage level of input voltage VDD12, of which the normal operation voltage range is 1.08V~1.32V. When the detected supply voltage (VDD12) increases beyond the detection level (VR12), the corresponding output V12_RY is generated as a high level logic(V33) and V12_RYN as a low level logic, or vice versa, when the detected voltage(VDD12) decreases below the detection level(VF12), the corresponding output V12_RY is generated as a low level logic and V12_RYN is generated as a high level logic.