Rewriteable electronic fuses include latches and/or logic gates coupled to
one or more nonvolatile memory elements. The nonvolatile memory elements
are configured to be programmed to memory values capable of causing
associated electronic circuits to settle to predetermined states as
power-up or reset signals are applied to the fuses. Although not
required, the nonvolatile memory elements used in the rewriteable
electronic fuses may comprise floating-gate transistors. An amount of
charge stored on the floating gate of a given floating-gate transistor
determines the memory value and, consequently, the state to which a fuse
settles upon power-up or reset of the fuse.