Overview

The AT24C01A is a 1-kilobit Electrically Erasable Programmable Read-Only Memory (EEPROM) from Atmel (now Microchip Technology). It's organized as 128 x 8 bits and uses a two-wire serial interface (I2C) for communication. The "-10SA-2.7C" suffix specifies the access time, package type, and voltage range. It is a commonly used, low-cost memory solution for storing small amounts of data in embedded systems.

Applications

• Storing configuration settings in embedded systems.
• Storing calibration data in sensors and measurement devices.
• Storing serial numbers or identification codes.
• Storing user preferences in consumer electronics.
• Storing data logging information.

Features

• 1-kilobit (128 x 8) memory array.
• Two-wire serial interface (I2C).
• Low-voltage operation (2.7V, as indicated by "-2.7C").
• Self-timed write cycle.
• Write protect feature.
• Low power consumption.
• Small package options (SA likely stands for Small Outline Package).
• 1 MHz clock frequency.

Benefits

• Non-volatile storage retains data without power.
• I2C interface simplifies communication with microcontrollers.
• Low-voltage operation reduces power consumption.
• Write protect feature prevents accidental data corruption.
• Small package size saves board space.

Additional Details

The AT24C01A communicates via the I2C protocol, utilizing a two-wire interface (SDA and SCL). The I2C address is configurable, allowing multiple AT24C01A devices to share the same I2C bus. The self-timed write cycle simplifies programming by automatically handling the timing requirements. The write protect feature protects the entire memory array from accidental writes. Different package options are available to suit various board layouts. The 1 MHz clock frequency specifies the maximum speed of the I2C communication. Data retention is guaranteed for a long period, typically 10 years or more. The datasheet contains information on timing diagrams, voltage ranges, and more.