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Advantages of EEPROM memory | disadvantages of EEPROM memory

This page covers advantages and disadvantages of EEPROM memory. It mentions EEPROM advantages or benefits and EEPROM disadvantages or drawbacks. It provides links on various topics on EEPROM basics.

What is EEPROM

The EEPROM is the short form of Electrically Erasable Programmable ROM. It is developed to overcome drawbacks of EPROMs.
Refer difference between EPROM vs EEPROM vs Flash EPROM >>.

Benefits or advantages of EEPROM

Following are the benefits or advantages of EEPROM:
➨The method of erasure is electrical and immediate.
➨It is possible to erase entire contents of EEPROM as well as particular byte as per selection.
➨It is very easy to program and erase the contents of EEPROM without removing it from board or test jig. The designers incorporate circuitry to program/erase the EEPROM in the board itself.
➨To change the contents, additional equipments are not required.
➨Electrical interfaces of different types viz. serial bus and parallel bus are available.
➨It is possible to re-program EEPROM infinite number of times.

Drawbacks or disadvantages of EEPROM

Following are the disadvantages of EEPROM:
➨EEPROM requires different voltages for erasing, reading and writing the data.
➨EEPROM has limited data retention time period which is approx. 10 years for most of the devices.
➨External serial EEPROM type requires long time to access. Hence it is advisable to select appropriate EEPROM type based on application of use.
➨EEPROM devices are expensive compare to PROMs and EPROMs.

Also refer advantages and disadvantages of EPROM memory type>>.

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