Memory Cards

understanding how they work.

An EEPROM (E²PROM, E2PROM), or Electrically-Erasable Programmable Read-Only Memory, is a non-volatile storage chip used in computers and other devices (such as USB flash drives, in its flash memory version).


How long is life of memory cards?


Normal EEPROM only allows one location at a time to be erased or written, meaning that flash memory can operate at higher effective speeds when the system uses it to read and write to different locations at the same time. All types of flash memory and EEPROM wear out after a certain number of erase operations, due to wear on the insulating oxide layer around the charge storage mechanism used to store data. A typical flash memory unit wears out after 10,000 erase operations. Some Highend PRO memory cards last up to 100,000 erase operations.