25AA256T-I/SM

25AA256T-I/SM is a 2Kb, I²C-compatible serial EEPROM manufactured by Microchip Technology. Non-volatile memory devices and serial EEPROMs are devices whose data is retained in the absence of power, giving them immense utility in embedded devices that must operate for long periods of time without a power source. In addition, devices like this help engineers integrate certain functionalities into their designs that are difficult or impossible to do with other components.

Application Field

The 25AA256T-I/SM Memory is primarily used in embedded applications, because it is capable of being used in a wide range of temperatures and voltage levels which makes it ideal for a wide range of industrial and commercial applications. The device can handle any kind of data that needs to be retained when the power is off and can be used for storing calibration settings, user settings, product tracking information, instructions and other data that can be useful in different industrial applications.

In addition, this type of memory can be used in medical applications where data needs to be securely stored. As this type of memory is non-volatile, its data is retained even when power is switched off. This makes it both secure and reliable for medical applications. It is also used in consumer applications such as audio and video players and other electronic goods.

Working Principle

The working principle of the 25AA256T-I/SM Memory is based on the I²C serial bus protocol, which is a bi-directional two-wire serial communication protocol. The protocol was developed by Philips Semiconductors and is used to interconnect ICs across short distances, allowing them to communicate with each other. The protocol is based on a master-slave architecture, where the master initiates communication with the slave. The slave responds when the master initiates communication, and does not initiate communication itself.

The protocol allows for data to be transferred at a rate of up to 100Kb/s with a maximum throughput of 2Kb/s for large data transfers. The protocol can also be modified by the user to decrease or increase the data transfer rate. The protocol requires two signals from the master, the SCL (Serial Clock Line) and the SDA (Serial Data Line). The data is transferred across these two lines and is read or written by the device depending on the set commands.

The 25AA256T-I/SM Memory is a single-voltage device and is capable of operating in temperatures of -40°C to +125°C. It has an 8-bit word size, a Byte Write Type of 70µs and a Byte End Write Time of 10ms. Its Clock Frequency is 100kHz and it has a Software Data Protection which allows users to configure the memory so that critical data is not overwritten when writing new data. The memory is capable of storing up to 256 bytes of data.