Routing and programming for resistive switch arrays

摘要

Various structures and methods are disclosed related to routing and programming circuitry on integrated circuits (“IC”) that have arrays of programmable resistive switches. In some embodiments, routing structures utilize densely populated resistive switch arrays to provide for efficient selection circuits that route into and out of logic regions. In other embodiments, programming circuitry is provided to help maintain relatively consistent programming current throughout an array of resistive switches to be programmed. In other embodiments, methods are provided for programming resistive switches without violating given power constraints. These and other embodiments are described further herein.

主权项

1. A method of programming a column of resistive switches in a power constraint sharing region of a resistive switch array, the method comprising:
during a first programming cycle, programming one or more resistive switches to be on-programmed if a power cost of on-programming the one or more resistive switches does not exceed a power constraint for on-programming switches during a programming cycle; and if, after the first programming cycle, any resistive switches are remaining to be on-programmed (“remaining switches”), programming the remaining switches during one or more subsequent programming cycles.