25AA040A-I/ST

25AA040A-I/ST is a nonvolatile 4Kbit CMOS serial EEPROM memory, which is mainly used for a wide range of applications. It provides advantages such as low-cost, easy connection and a wide temperature range. This article aims to introduce the application field and working principle of 25AA040A-I/ST.

Application Field

The 25AA040A-I/ST memory is used in various applications such as digital audio, medical devices and consumer electronic products. It is ideal for applications that require low-cost, flexible non-volatile memory, such as storing configuration data, system parameters and other data. For example, it is used for storing Health Insurance Number in medical device, security and user log-in codes in audio recorders, printer settings and other data in consumer electronics.

Moreover, the 25AA040A-I/ST can be used in numerous other embedded systems. It is often used in battery-backed, remote and compact system applications, including wireless and IoT networks because of its long-term data storage capability. It also provides excellent reliability when used in automotive and industrial environment.

Working Principle

The 25AA040A-I/ST is a non-volatile, serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It can store up to 4096 bits of data in its 4Kbits memory cell array, with byte-level or page-level write capability. Data can be written to or read from the 25AA040A-I/ST in two different operating modes: the single-byte mode, or the page write mode.

In the single-byte mode, the data to be written to the 25AA040A-I/ST is sent serially, 8 bits at a time. The data is stored in the memory cell array in blocks of 8 bits, with each block corresponding to a single address in the memory. In the page write mode, which is the most efficient way to transfer large blocks of data to the 25AA040A-I/ST, data is written to the memory in pages of 32 bytes at a time.

The 25AA040A-I/ST can be powered by either a 3.0V to 3.6V voltage or a 1.8V to 2.7V voltage, allowing it to be used in diverse applications. It also has a wide operating temperature range of –55°C to +125°C and can hold data for up to 10 years.

Conclusion

The 25AA040A-I/ST is a versatile non-volatile memory that is well-suited for a variety of applications, including systems with low-cost and flexible data storage requirements. It has the ability to operate across a wide temperature range and its page-write mode allows data to be written in large blocks quickly and efficiently. The 25AA040A-I/ST is an excellent choice for embedded systems when durability, reliability, and long term data storage are essential.