ST-EPROMs-ST-M27C4001-10F1-p-This-device-has-an-erasable-programmable-read-only-memory-which-is-suited-for-uses-where-fast-turn-around-&-pattern-experimentation-are-required-It-incorporates-a-transparent-window-to-permit-erasure-of-the-programmed-pattern-by-exposure-to-ultraviolet-light-a-new-active-pattern-can-then-be-written-into-the-device-p-ST-M27C4001-10F1-EPROM-4MB-100ns