| 摘要 |
The bootstrap circuit of an EPROM is modified by establishing a cover (18) on the second domain (5) and the p-n junction (C7, C9) with a conducting layer produced by aluminum film (1-1.5 μm) in order to reprogram effectively, that is, cut off the light on the connection between a condenser and a MISFET not so as to reduce the voltage of a condenser used in the bootstrap circuit when an EPROM is used in a light room.
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