What is the ROM mask?
Mask ROM is a type of memory only for reading, or a ROM that is masked during production. The "mask" refers to parts of the integrated circuit, a thin electronic circuit for data processing, which is covered with opaque plates called photomass. These plates contain transparency or holes that allow light in certain areas while blocking the light in others to create distinctive formulas. Masking work, including the process known as photolithography, primarily serves as a kind of intellectual property protection and reserves the reproduction of the product integrated by the district manufacturer.
Like other ROM types, the Mask ROM cannot allow the user to change the data stored in it. If possible, the process would be difficult or slow. The ROM is primarily distributed as a firmwire - software or coded instructions - permanently stored in ROM. Firmwire is particularly suitable for field programmability, which includes programming into electronic devices without being divided. More specifically,The ROM mask is subcategory as a semiconductor memory. This term is used for storing data, which is placed on an integrated semiconductor circuit, or a chip built on a piece of material that has electrical conductivity.
Some users rely on the mask of the ROM to store the completed code of their projects. When projects develop, data can be stored using independent memory. It is a type of computer memory that can store data with a lack of energy or energy source. Examples of leaking memory include a greased programmable memory only for reading (EPROM) and electrically deceiving programmable memory only for reading (EEPROM). Some microcontrollers or a small computer on the integrated circuit responsible for controlling the electronic device on which it is installed, they have for developmental purposes and mask the ROM for the finalized code.
There are a few semi -pickedOndector or Electronics manufacturers who produce chips containing only the ROM mask. The first example is the Samsung Electronics, a leading subsidiary of the Samsung conglomerate. Other such manufacturers include Japanese technology companies NeC Corporation and OKI Electric Industry Co., Ltd.
The main advantage of Mask ROM is that it is cheap compared to other types of semiconductor memory. This is because the costs of the integrated circuit are bound to how large or small is part. Mask ROM is generally smaller than other types of semiconductor memory, which makes it cheaper.
The ironic disadvantage of the ROM mask concerns the work of the mask associated with its production. It not only takes a lot of time to complete this phase, but there is always the possibility of data or code error. If this happens, the component becomes completely unnecessary.