AN2014 datasheet(59/65 Pages) STMICROELECTRONICS

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AN2014

Operating conditions

There are many other operating conditions, imposed by the final application environment,

that may also have an adverse affect on the EEPROM device (shortened lifetime or

unreliable operation). They should be studied, and solutions must be found to minimize

them.

7.1

Temperature

The temperature should be kept as low as possible, since high temperatures accelerate

wear-out. At high temperatures, cycling endurance and data retention capability are reduced

because of charge trapping in the thin oxide of the memory cells. When applications are

designed to run in hot environments with high cycling requirements, it is strongly

recommended to establish a temperature profile and discuss it with the ST EEPROM quality

support (refer to Section 5.5: Cycling endurance and data retention).

7.2

Humidity and chemical vapors

Boards should always operate in a clean and dry environment. Humidity and dirt of any kind

can cause corrosion and short circuits between package pins and tracks.

7.3

Mechanical stress

EEPROM packages cannot withstand excessive weight, local pressure or strong shocks.

AN2014 数据表(PDF) 59 Page - STMicroelectronics