Write protect mechanism for non-volatile memory

作者： Robert Wayne Sparks , Brian Freeland Wilkie , George Gordon Grimmer

DOI:

关键词: Computer hardware 、 Non-volatile memory 、 Memory buffer register 、 Reset (computing) 、 Computer science 、 Memory data register 、 Memory address register 、 Mechanism (engineering) 、 Operating system 、 Control register

摘要: A write protect mechanism for a programmable read-only memory prevents writes to the PROM unless register contains predetermined information. The is itself protected control register. information cannot be written into except during short, period after occurrence of an event such as reset. may with other than at any time. preferred embodiment comprises single-chip microcomputer on-board electrically-erasable which in several, separate blocks.