Patent ID: 6353355
Filing Date: 2002-03-05
Classification: G05F

Abstract:
A semiconductor device, supplied with a first external power-supply potential from a first external power-supply, for operation, comprising:an external power-supply line transmitting said first external power-supply potential; and a voltage generating circuit converting said first external power-supply potential received from said external power-supply line into an internal power-supply potential to be supplied to an internal power-supply line; said voltage generating circuit including a reference potential generating unit receiving said first external power-supply potential from said external power-supply line to generate a reference potential signal, corresponding to a set potential level of said internal power-supply potential, at a first intermediate node, a voltage converting circuit supplying an amount of current, corresponding to a difference between potential levels of said internal power-supply line and said first intermediate node, from said external power-supply line to said internal power-supply line, a first current-supply circuit supplying a first operational current to said voltage converting circuit during an activation period of a first control signal, and a first activation control circuit activating said first control signal for a period from activation of said first external power-supply until the potential level of said internal power-supply line reaches a predetermined level, said first activation control circuit detecting said activation of said first external power-supply by comparing potential level of a first reference node transmitting a first potential with that of said internal power-supply line, said first reference node being electrically separated from a node affecting a potential level of said reference potential signal; said semiconductor device further comprising: an internal circuit receiving said internal power-supply potential from said internal power-supply line, for operation.