AT28C256E-15LM/883

The AT28C256E-15LM/883 is a 256K Electrically Erasable Programmable Read Only Memory (EEPROM) chip designed and manufactured by Atmel. EEPROMs are a type of non-volatile memory which can be quickly and easily rewritten, allowing users to store small amounts of data in memory that is not lost when power is removed.

Application Field

The AT28C256E-15LM/883 is ideal for applications requiring small amounts of non-volatile memory. Areas of application include product configuration settings and calibration data, battery powered devices and appliances, embedded systems, and data logging.

Working Principle

The AT28C256E-15LM/883 uses a floating-gate technology to store data. Floating-gate transistors are able to store a charge and hold it for a long period of time, even when power is removed. The chip is programmed and erased using an electrical charge, allowing it to be quickly and easily rewritten without the need for special equipment or programming software.

The AT28C256E-15LM/883 works by setting or resetting the charge on the floating-gate transistors. Each bit of data is stored on a single transistor, with the voltage representing a 1 bit or a 0 bit depending on whether the charge is present or not. Data is written to the chip using a standard serial or parallel interface, and the chip can be programmed to read or write data at specific intervals.

The chip also contains various safety features designed to prevent unintended erasure or data corruption. These include an arrest counter and control logic to prevent accidental programming, as well as an electrical erase function to quickly erase the chip in a single operation.

Conclusion

The AT28C256E-15LM/883 is a versatile and reliable non-volatile memory chip, suitable for a range of applications requiring small amounts of data storage. The chip’s built-in safety features help to protect data from unintended changes or corruption, and its ability to be quickly and easily rewritten makes it ideal for applications that regularly update or change the stored data.