Patent ID: 7511556
Filing Date: 2009-03-31
Classification: H03K

Abstract:
1. A multi-function circuit module having voltage level shifting function and data latching function, the multi-function circuit module comprising: a first circuit module, comprising: a fourth switch module, coupled between the fourth node and a second voltage source, for receiving a first control signal and selectively conducting the fourth node and the second voltage source according to the first control signal, wherein when the fourth switch module conducts the fourth node and the second voltage source, the first switch module, the third switch module, and the fourth switch module act as a voltage level shifting circuit to respectively adjust voltage levels of the first node and/or the second node, so as to generate at least an output signal; and a fifth switch module, coupled between the third node and the second voltage source, for receiving a second control signal and selectively conducting the third node and the second voltage source according to the second control signal, wherein when the fifth switch module conducts the third node and the second voltage source, the first switch module, the second switch module, and the fifth switch module act as a data latching circuit to latch the voltage levels of the first node and the second node.