AT28C64E-12PI

AT28C64E-12PI memory chip is widely used in various fields of application due to its high performance and reliability. It is an 8-bit non-volatile, reprogrammable memory containing 64K bytes electrically erasable programmable read-only memory (EEPROM). Produced by Atmel Corporation, AT28C64E-12PI is commonly used in industrial and consumer applications, such as data logging and consumer products.

The AT28C64E-12PI has a self-contained host microcontroller, which includes CPU, RAM, A/D, EEPROM and I/O peripherals. The chip is based upon the 8-bit Atmel AT28C64A core, which has a single 8-bit data bus, one clock input, one address bus and five control signals. The AT28C64E-12PI supports an asynchronous serial interface, which allows the microcontroller to access an external EEPROM.

The AT28C64E-12PI chip can be used to store and execute up to 64K bytes of program code. It also performs a write-protect function to ensure that the user’s code is not accidentally modified. The chip is designed to efficiently manage memory resources and optimize data integrity.

Working principle of AT28C64E-12PI is based on the concept of non-volatility. Non-volatility refers to the ability of a memory chip to retain data stored in it even when power is removed. The chip can sustain its composure until the microcontroller is reset.

As soon as the microcontroller is reset, it activates a small on-chip controller, called an embedded register. The embedded register then loads a few instructions that the microcontroller needs to execute. As the instructions are executed, the microcontroller reads and writes data from the on-chip EEPROM memory.

The AT28C64E-12PI also implements a chip-protection mechanism. This mechanism prevents the chip from being reprogrammed or written over without permission. Furthermore, the chip also contains an error-checking mechanism which ensures data integrity and reduces the possibility of accidental erasure.

In conclusion, AT28C64E-12PI is a reliable and high-performance EEPROM chip which is suitable for a range of industrial and consumer applications. Its write-protect and error-checking features ensure data integrity and reliability. As such, it is increasingly being used in various consumer and industrial products.