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 "-10TSU-1.8" 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, in this case for low voltage applications.

Applications

• Storing configuration settings in low-power embedded systems.
• Storing calibration data in sensors and measurement devices operating at low voltages.
• Storing serial numbers or identification codes.
• Storing user preferences in battery-powered devices.
• Data logging applications where low voltage operation is critical.

Features

• 1-kilobit (128 x 8) memory array.
• Two-wire serial interface (I2C).
• Low-voltage operation (1.8V, as indicated by "-1.8").
• Self-timed write cycle.
• Write protect feature.
• Extremely low power consumption.
• Small package options (TSU is a common SOT package variant).
• 1 MHz clock frequency.

Benefits

• Non-volatile storage retains data without power.
• I2C interface simplifies communication with microcontrollers.
• Extremely low-voltage operation minimizes power consumption.
• Write protect feature prevents accidental data corruption.
• Small package size saves board space.
• Ideal for battery-powered and low-power applications.

Additional Details

The AT24C01A-10TSU-1.8 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. The extremely low voltage operating range will influence design to match the microcontroller requirements. Data retention is guaranteed for an extended duration, typically several years or more. The datasheet will contain information on timing diagrams, voltage ranges, and more.