Patent ID: 7456652
Filing Date: 2008-11-25
Classification: H01L

Abstract:
1. A circuit version identification apparatus, comprising: a plurality of conductive layers, wherein each of the conductive layers has a first conductive line and a second conductive line; a first pull up/down circuit electrically connected to the first conductive line of the conductive layers for providing a first potential; a circuit version identification unit having an input terminal and an output terminal, wherein the input terminal of the circuit version identification unit is electrically connected to the second conductive line of the conductive layers, and the output terminal of the circuit version identification unit is used for outputting a circuit version identification information; and a second pull up/down circuit electrically connected to the input terminal of the circuit version identification unit for providing a second potential; wherein, the first conductive line and the second conductive line are disconnected when the circuit version identification information needs to be in a first state; and the first conductive line and the second conductive line in one of the conductive layers are electrically connected when the circuit version identification information needs to be in a second state.