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- Mask_ROM abstract "Mask ROM (MROM) is a type of read-only memory (ROM) whose contents are programmed by the integrated circuit manufacturer (rather than by the user). The terminology \"mask\" comes from integrated circuit fabrication, where regions of the chip are masked off during the process of photolithography. It is common practice to use rewritable non-volatile memory – such as UV-EPROM or EEPROM – for the development phase of a project, and to switch to mask ROM when the code has been finalized. For example, Atmel microcontrollers come in both EEPROM and mask ROM formats.The main advantage of mask ROM is its cost.Per bit, mask ROM is more compact than any other kind of semiconductor memory. Since the cost of an integrated circuit strongly depends on its size, mask ROM is significantly cheaper than any other kind of semiconductor memory.However, the one-time masking cost is high and there is a long turn-around time from design to product phase. Design errors are costly: if an error in the data or code is found, the mask ROM is useless and must be replaced in order to change the code or data.Some integrated circuits contain only mask ROM.As of 2003, four companies produce most such mask ROM chips: Samsung Electronics, NEC Corporation, Oki Electric Industry, and Macronix.Other integrated circuits contain mask ROM as well as a variety of other devices. In particular, many microprocessors have mask ROM to store their microcode. Some microcontrollers have mask ROM to store the bootloader or all of their firmware.".
- Mask_ROM wikiPageID "605159".
- Mask_ROM wikiPageLength "2037".
- Mask_ROM wikiPageOutDegree "22".
- Mask_ROM wikiPageRevisionID "617012349".
- Mask_ROM wikiPageWikiLink Atmel.
- Mask_ROM wikiPageWikiLink Booting.
- Mask_ROM wikiPageWikiLink Category:Computer_memory.
- Mask_ROM wikiPageWikiLink EEPROM.
- Mask_ROM wikiPageWikiLink EPROM.
- Mask_ROM wikiPageWikiLink Field-programmability.
- Mask_ROM wikiPageWikiLink Firmware.
- Mask_ROM wikiPageWikiLink Integrated_circuit.
- Mask_ROM wikiPageWikiLink Integrated_circuit_layout_design_protection.
- Mask_ROM wikiPageWikiLink Microcode.
- Mask_ROM wikiPageWikiLink Microcontroller.
- Mask_ROM wikiPageWikiLink Microprocessor.
- Mask_ROM wikiPageWikiLink NEC.
- Mask_ROM wikiPageWikiLink Non-volatile_memory.
- Mask_ROM wikiPageWikiLink Oki_Electric_Industry.
- Mask_ROM wikiPageWikiLink Photolithography.
- Mask_ROM wikiPageWikiLink Photomask.
- Mask_ROM wikiPageWikiLink Read-only_memory.
- Mask_ROM wikiPageWikiLink Samsung_Electronics.
- Mask_ROM wikiPageWikiLink Semiconductor_device_fabrication.
- Mask_ROM wikiPageWikiLink Semiconductor_memory.
- Mask_ROM wikiPageWikiLinkText "Fixed ROM".
- Mask_ROM wikiPageWikiLinkText "Mask ROM".
- Mask_ROM wikiPageWikiLinkText "Mask_ROM".
- Mask_ROM wikiPageWikiLinkText "mask ROM".
- Mask_ROM wikiPageWikiLinkText "mask programmed".
- Mask_ROM wikiPageWikiLinkText "mask".
- Mask_ROM wikiPageWikiLinkText "mask-programmable".
- Mask_ROM wikiPageWikiLinkText "mask-programmed ROM chip".
- Mask_ROM wikiPageWikiLinkText "mask-programmed ROM".
- Mask_ROM wikiPageUsesTemplate Template:Compu-hardware-stub.
- Mask_ROM wikiPageUsesTemplate Template:Memory_types.
- Mask_ROM wikiPageUsesTemplate Template:Refimprove.
- Mask_ROM wikiPageUsesTemplate Template:Reflist.
- Mask_ROM wikiPageUsesTemplate Template:Update_inline.
- Mask_ROM subject Category:Computer_memory.
- Mask_ROM hypernym Memory.
- Mask_ROM type Company.
- Mask_ROM type Array.
- Mask_ROM type Datum.
- Mask_ROM type Redirect.
- Mask_ROM comment "Mask ROM (MROM) is a type of read-only memory (ROM) whose contents are programmed by the integrated circuit manufacturer (rather than by the user). The terminology \"mask\" comes from integrated circuit fabrication, where regions of the chip are masked off during the process of photolithography. It is common practice to use rewritable non-volatile memory – such as UV-EPROM or EEPROM – for the development phase of a project, and to switch to mask ROM when the code has been finalized.".
- Mask_ROM label "Mask ROM".
- Mask_ROM sameAs Q1066545.
- Mask_ROM sameAs ذاكرة_قراءة_فقط_مقنعة.
- Mask_ROM sameAs Maskenprogrammierung.
- Mask_ROM sameAs マスクROM.
- Mask_ROM sameAs 마스크_롬.
- Mask_ROM sameAs Mask-ROM.
- Mask_ROM sameAs m.02vrm3.
- Mask_ROM sameAs Mask_ROM.
- Mask_ROM sameAs Q1066545.
- Mask_ROM wasDerivedFrom Mask_ROM?oldid=617012349.
- Mask_ROM isPrimaryTopicOf Mask_ROM.