Here are some key features along with the definition of EPROM:
- More versatile than PROM, allowing data to be erased and reprogrammed multiple times.
- Erasure process: Requires exposure to ultraviolet light for an extended period, making it inconvenient for frequent changes.
- Features: Otherwise similar to PROM in terms of volatility, affordability, and typical applications.
- Limitations: Slow and cumbersome erasure process, limited rewrite cycles (typically thousands), sensitive to UV light exposure.
We at Semiconductors India deal in all kinds of EPROMs for various Business needs. Our clients are from Industries such as Automation, Optical, Wearable Technology, Navigation, Home Automation, Chemical, Automotive, Agriculture and many more.
Buy EPROM at the best price from Semiconductors India at 9717122688 and mail id semiconductorsindia@gmail.com
Technical Specifications:
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Aspect |
Description |
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Definition |
EPROM, short for Erasable Programmable ROM, is a type of memory chip that retains its data even when the power supply is switched off. It can be erased using ultraviolet (UV) light and reprogrammed with a PROM programmer or PROM burner. |
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Design Considerations |
- During the semiconductor manufacturing process, EPROMs are designed and masked. - Transistor layout, width, and placement are crucial. - N-type and P-type semiconductors are used. |
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Erasure Mechanism |
- To erase an EPROM chip, it is bombarded with UV radiation through a quartz window. - The trapped electrons in the floating gate receive enough energy to escape. - The quartz window is covered with an opaque label during normal use to prevent slow erasure from sunlight and fluorescent lights. |
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Structure |
- Each row of an EPROM stores a memory word and connects to a word line for addressing purposes. - The number of columns equals the bits per word, with each column connecting to a sense/write circuit. |
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Applications |
- EPROMs are widely used in personal computers, allowing manufacturers to change the contents of programmable read-only memory before shipping. - Commonly used to store BIOS information and basic software for modems, video cards, and other peripherals. - Flash EPROM (FEPROM) incorporates FLASH technology and is available from some chip manufacturers. |
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Selection Criteria |
- Consider operating current, standby current, and power dissipation. - Access time (measured in nanoseconds) indicates memory speed. - EPROMs may meet commercial, industrial, or military specifications (MIL-SPEC). - Variations in supply voltage, logic family, and package type exist. |
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