A decoder providing asynchronous reset, redundancy, or both, an asynchronously-resettable
decoder with redundancy. The decoder has a synchronous portion, responsive to a
clocked signal; an asynchronous portion coupled with an asynchronous circuit; a
feedback-resetting portion, which substantially isolates the synchronous portion
from the asynchronous portion coupled with, and interposed between the synchronous
portion in response to a asynchronous reset signal; a signal input; a first memory
output coupled with a first memory cell group; a second memory output coupled with
a second memory cell group; and a selector coupled between the signal input, the
first memory output, and the second memory output. This decoder can be memory row-oriented,
and thus provide an asynchronously-resettable row decoder with row redundancy,
or an asynchronously-resettable column decoder with column redundancy.
