24AA025E48T-I/OT Integrated Circuits (ICs)

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Memory: 24AA025E48T-I/OT Application Field and Working Principle

The 24AA025E48T-I/OT is a 2-Wire serial EEPROM which is designed for use in automotive, medic, and industrial applications where low power and robustness are required. It is available in an 8-pin PDIP, SOIC, and TSSOP packages. It has a 512-bit EEPROM array (36 bytes programmable) with a three-byte hardware slave address and input/output filtering.

The 24AA025E48T-I/OT provides a range of features tailored to process control, automotive, medic and industrial system applications. These features include a high-speed communication rate of up to 400 kHz, low power consumption, strong data retention, ESD protection and more. It supports a large voltage range and can work at a wide temperature range. It has a single-write protection feature, allowing only one byte to be written at a time. A protection register allows the upper byte-wise write protect signals to be programmed.

Application Field

The 24AA025E48T-I/OT is ideally suited for applications in which security, reliability and efficiency are important. It is ideal for applications requiring the rapid and efficient storage and retrieval of data such as process control, automotive, medic and industrial systems. It can be used for programmable control units; vehicle, medical and industrial equipment; asset management systems; portable terminal and radio devices; and security systems.

Working Principle

The 24AA025E48T-I/OT is based on a two-wire bus architecture which is compatible with I2C protocol. It consists of a three-byte serial number, which is an identification number for the product, and a 36-byte EEPROM array. The communication protocol is serial and bi-directional. The data transfer uses two signal lines, the serial data line (SDA) and the serial clock line (SCL). The master initiates communication by issuing a START condition on the data line, followed by a slave address. During data transfer, the master initiates the data on the falling edge of the serial clock and the slave device responds on the rising edge. Data is transmitted in either 7-bit or 10-bit slave address formats. The acknowledgement bit is sent by the slave to the master following a slave address and valid data.

The 24AA025E48T-I/OT includes a range of read and write operations. Reads and Writes are controlled by the write-enable (WE) input. There are two write operations available: Page Write and Random Write. In the Page Write operation, data can be written one-byte at a time up to the maximum capacity of the array. Random Write operation allows the user to write data within the array without the need to write the whole page. There is also a protection register which can be used to set the upper byte protection.

The 24AA025E48T-I/OT also features Error Detection Codes. Data integrity is ensured by applying a cyclic redundancy check (CRC) during data transmission. Any errors in the data can be detected by the receiver by comparing the received CRC with the transmitted CRC. In addition, ECC (Error Correction Code) is used which allows the EEPROM to correct any single-bit errors that may occur during data transmission.

In summary, the 24AA025E48T-I/OT provides an efficient, robust solution for secure data storage and retrieval in automotive, medic and industrial applications. It is a reliable and cost-effective alternative to flash memory technologies, allowing for higher speed and lower power consumption in a small form factor. The equipment offers a range of features tailored to the specific needs of many applications, including high communication rates, low power consumption, EDA protection and more.

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