Patent ID: 6275063
Filing Date: 2001-08-14
Classification: H03K

Abstract:
A circuit for selecting one of at least two operational modes for a semiconductor device, one of said at least two operational modes being a default mode, comprising:a first one-time programmable device actuable from a first state to a second state;a second one-time programmable device actuable from said first state to said second state;option circuitry, coupled to said first and second one-time programmable devices, said option circuitry being responsive to said first one-time programmable device being in said second state when said second one-time programmable device is in said first state to assert a first option signal;wherein said option circuitry being responsive to said first and second one-time programmable devices being in said second state to assert a second option signal;wherein said semiconductor device is responsive to assertion of said first option signal to operate in a first mode, distinct from said default mode; andwherein said semiconductor device is responsive to assertion of said second option signal to operate in said default mode.