Patent ID: 8981818
Filing Date: 2015-03-17
Classification: H03K

Abstract:
1. A non-transitory computer readable storage medium with an executable program stored thereon, wherein the executable program controls a two-stage post driver circuit, the two-stage post driver including a first transistor having a drain terminal connected to an output pad, and a second transistor having a drain terminal connected to a source terminal of the first transistor and a source terminal connected to a first supplying voltage, the executable program controls the two-stage post driver circuit to perform steps of: during a transient period of switching the output pad to the first supplying voltage, providing a path to connect the output pad to a gate terminal of the first transistor and providing a logic level to a gate terminal of the second transistor; and during a steady period after the transient period, providing a constant voltage to the gate terminal of the first transistor and providing the logic level to the gate terminal of the second transistor; wherein the two-stage post driver includes a pull-down unit connected between the output pad and a ground voltage, and the method further comprises a step of: turning off the pull-down unit during the transient period and the steady period of switching the output pad from the ground voltage to the first supplying voltage.