24AA256-I/ST

Memory

The 24AA256-I/ST is a 2-wire, low-voltage serial EEPROM memory device used in a variety of applications. It has 256K bits of memory organized as 32768 x 8 bits. The device is capable of maintaining data for 40 years with a 10-year shelf life. It has a 2 MHz I2C serial clock, which allows for up to 42.7 Mbps high-speed data transfers at 3.14 MHz.

The device is suitable for a variety of consumer, automotive, industrial, and medical applications due to its high-speed transfer rates, low voltage operation, and extended reliability. It is available in a variety of memory densities and operates over a wide temperature range of -40°C to +85°C. The device also features a low-power sleep mode and write protection options.

Application field

• IoT devices.
• Medical safety systems.
• Security system.
• Consumer electronics.
• Industrial automation.
• Avionics.
• Automotive electronics.

Working principle

The 24AA256-I/ST EEPROM is an integrated circuit (IC) that stores non-volatile data on an onboard 8-bit register. Data is written to and read from the register using on-chip communication, using the Serial Peripheral Interface (SPI) bus protocol. When power is removed from the device, memory contents remain unaffected, allowing data to be preserved until it is written to the device.

The 24AA256-I/ST device features a write protection feature to prevent accidental modification of the memory contents. It also offers an optional memory address space write-protect option for high density applications. Additionally, the device has a wide array of commands that allow the user to perform a variety of functions, including writing data, reading data, erasing, and verifying the contents of the memory.