The AT25256C1-10CI-2.7 is a 256-Kbit serial EEPROM (Electrically Erasable Programmable Read-Only Memory) from Atmel, now Microchip Technology. This device utilizes a Serial Peripheral Interface (SPI) for communication, allowing easy integration with microcontrollers and other digital systems. The '2.7' in the part number indicates that it's designed for operation with a supply voltage around 2.7V, and '10' refers to the clock frequency in MHz. It's commonly used for storing configuration data, user preferences, or calibration settings.

Applications

• Storing configuration data for embedded systems
• Storing user preferences in consumer electronics
• Calibration data storage in sensors
• Serial number storage
• Security information storage

Features

• 256-Kbit (32K x 8) EEPROM
• SPI Serial Interface
• Low-Voltage Operation (2.7V)
• 10 MHz Clock Frequency
• Write Protect Feature
• Self-Timed Write Cycle

Benefits

• Non-volatile storage – retains data when power is off
• Simple SPI interface – easy to interface with microcontrollers
• Low-power operation – suitable for battery-powered applications
• Write protection – prevents accidental data corruption
• Fast write cycles – improves system performance

Additional Details

The AT25256C1-10CI-2.7 features a self-timed write cycle, which simplifies the write operation. The device also includes a hardware write protect feature to prevent accidental data corruption. It's available in various packages, including SOIC and TSSOP. This particular part is marked as End-Of-Life from Atmel.