Detector for alpha particle or cosmic ray

摘要: A detector circuit and method for detecting a silicon well voltage or current to indicate an alpha particle cosmic ray strike of the well. One significant application detection present invention is redundancy repair latches that are used in SRAMs. The normally written once at power-up record failed latch data not again. If one changes states due SER (Soft Error Rate-such as by ray) event, SRAM would now be incorrectly mapped. monitors occurrence responsive thereto issues reload latches. first embodiment differentially detects floating voltages second wells during periods non-operation circuits fabricated wells. In embodiment, background level single over consecutive time. traditional logic circuits.