| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a level shifter circuit for preventing malfunctions of an output buffer at application of power, with respect to a semiconductor integrated circuit having multiple power supplies. <P>SOLUTION: N-type transistors; acting as reset transistors on the occurrence of interruption of an internal power supply, are connected respectively to both drain terminals of P-type transistors in latch connection in a level shifter. Further, the gate of the N-type transistor for actually executing resetting is driven by a sense circuit of an internal power supply level, the gate of the N-type transistor not used for the resetting is connected to GND, and the connection destinations of both the N-type transistors can be properly replaced by a minimum wire change in response to the setting state. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
