93C46B/ST

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The 93C46B and ST are two types of electrically erasable programmable read-only memories (EEPROMs). They are non-volatile memories, and ideal for applications in which a microcontroller needs to store data for long periods of time without an external power source. The 93C46B is an 8-bit device with 1Kbits (128 x 8) of EEPROM storage, while the ST is a 16-bit device with 1Mbits (128K x 16) of EEPROM storage.

EEPROMs are useful in situations where the data needs to be preserved, as they can store data with no power source. The 93C46B and ST are suitable for storing critical data, such as calibration results and product configurations, that must be available at all times. They are also useful in applications where data needs to be stored in small increments, since they can easily be read and written with a microcontroller\'s I/O lines.

Application Field

The 93C46B and ST are commonly used in automotive applications, where they are used to store vehicle configurations and fault codes. They can also be used in industrial automation, communications, consumer devices, and many other applications to store critical data.

Working Principle

The 93C46B and ST use a write cycle to store information. Data is written to the EEPROM\'s memory cells by first supplying a chip enable signal and then entering the data. After the data has been written, a microcontroller must then issue a write enable signal, which will cause the data to be written to the memory cells. To prevent accidental writing, a higher voltage must be supplied to the write enable pin. Once the data has been written, it can be read back by applying a chip enable signal and then supplying the address of the memory location to be read.

The 93C46B and ST are non-volatile, meaning that they retain the information they store even when power is removed. They are also very durable, as the data they store can last over 10 years in typical usage scenarios. For this reason, they are often used in applications where the data needs to be kept for long periods of time without external power.

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