25LC020AT-E/SN

25LC020AT-E/SN Application Field and Working Principle

The 25LC020AT-E/SN is an I2C-compatible 2K-bit serial EEPROM, widely used in embedded systems, such as industrial automation, medical equipment, and home automation. It is designed to replace SPI, with a higher speed of 5MHz and a larger capacity of 20000-bits. The device consists of a 2K-bit array of 8-bit non-volatile ELECTRIC fuses.

Application Field

Given its small size and low power consumption, the 25LC020AT-E/SN is ideal for applications where space and size are limited but storage capacity needs to be increased. It can be used to store configuration data, such as MAC/IP addresses, WiFi settings or any other non-volatile software configuration values.

In addition, the device is also ideal for serial kits, such as industrial automation systems, medical equipment and home automation appliances. In such applications, the device can be used to store the firmware for the device, including the control instructions and parameters.

Working Principle

The 25LC020AT-E/SN supports I2C protocol and has 7 output-enable pins. The I2C bus consists of two lines—an SCL line (Serial Clock Line), and an SDA line (Serial Data Line). The 25LC020AT-E/SN then handles data transfers between the host controller and the memory devices by synchronizing the clock signals on the SCL line and the data elements on the SDA line.

The 25LC020AT-E/SN also has a write protection feature. The write protection enable pin is connected to the Vss line and can be used to enable/disable the write protection feature. When the write protection is enabled, all write operations will be blocked.

The 25LC020AT-E/SN supports two types of read operations—random read and sequential read. In random read mode, data can be read from the EEPROM at any address. In sequential read mode, data is read from the EEPROM in a sequential fashion. This mode is faster than random read, but requires a bit of extra logic to ensure that the data is read correctly.

The 25LC020AT-E/SN also supportsbyte, page, and block write operation modes. In byte write mode, data is written one byte at a time. In page write mode, multiple bytes can be written in one sequence. In block write mode, multiple pages can be written in a sequence. All three write modes are supported by the device and can be used to store large amounts of data quickly.