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Si Silicon pp 246-249 | Cite as

Read-Only Memories (ROMs)

  • Eberhard F. Krimmel
  • Rudolf Hezel
  • Uwe Nohl
  • Rainer Bohrer
Chapter
  • 213 Downloads
Part of the Si. Silicium. Silicon (System-Nr. 15) book series (GMELIN, volume S-i / B / 1-5 / 5 / c)

Abstract

The read-only memories (ROMs) are ICs where stored information is expected not to be changed during operation. Such memories have breakdown voltages much higher than the normal operating voltages. This offers the possibility to program finished ROMs after installing them in the equipment as needed applying higher voltages. Sub-classes of the general family of programmable memories, the PROMs, are the nonvolatile, electrically programmable, and UV-light erasable ROMs (EPROMs), the electrically programmable and electrically erasable ROMs (EEPROMs), to which also the so-called floating gate avalanche injection MOS (FAMOS) and electrically alterable ROMs (EAROMs) can be added.

Keywords

Silicon Nitride Silicon Oxide Layer Memory Retention Floating Gate Silicon Nitride Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • Eberhard F. Krimmel
    • 1
  • Rudolf Hezel
    • 2
  • Uwe Nohl
    • 3
  • Rainer Bohrer
    • 3
  1. 1.Universität Frankfurt/MainGermany
  2. 2.Universität ErlangenNürnbergGermany
  3. 3.Gmelin InstituteFrankfurt/MainGermany

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