VDD Diode Test

1. Drive 0V at all power pins (VDD,VSS) 2. Force current (100uA) to pin under test of the DUT which will forward bias the VDD diode. 3. If the measured voltage at pin under test is ~0.7V, it passes for Open/Short Test. 4. If the measured voltage is 0V, pin has illegal Short. 5. If the measured voltage is more than 1.5V, pin is Open.