AT25256AU2-10UI-2.7

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Data Storage

Characteristics: - Non-volatile memory - Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) - Low power consumption - High reliability - Small form factor

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The AT25256AU2-10UI-2.7 is a serial EEPROM IC that provides non-volatile data storage in various electronic devices.

Packaging/Quantity: The AT25256AU2-10UI-2.7 is typically sold in reels containing 2500 units per reel.

Specifications

• Memory Size: 256 kilobits (32 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 100 years

Detailed Pin Configuration

The AT25256AU2-10UI-2.7 has the following pin configuration:

1. Chip Select (/CS) - Active low input used to enable or disable the device.
2. Serial Clock (SCK) - Input for synchronizing data transfer between the microcontroller and the IC.
3. Serial Data Input (SI) - Input for transferring data from the microcontroller to the IC.
4. Serial Data Output (SO) - Output for transferring data from the IC to the microcontroller.
5. Write Protect (/WP) - Input used to protect the memory from accidental writes.
6. VCC - Power supply voltage.
7. Ground (GND) - Ground reference.
8. Hold (/HOLD) - Input used to pause serial communication without resetting the device.

Functional Features

• Byte and Page Write Modes: Allows data to be written in individual bytes or in larger page sizes for faster programming.
• Sequential Read Mode: Enables continuous reading of multiple memory locations without the need for readdressing.
• Software Protection: Provides write protection by using a software command to prevent accidental modification of stored data.
• Hardware Protection: Utilizes the Write Protect (/WP) pin to physically protect the memory from unauthorized writes.
• Deep Power-down Mode: Reduces power consumption to an ultra-low level when the IC is not in use.

Advantages and Disadvantages

Advantages: - Compact size and low power consumption make it suitable for portable devices. - High reliability ensures data integrity over extended periods. - Wide operating voltage range allows compatibility with various systems. - Easy integration into existing designs due to standard SPI interface.

Disadvantages: - Limited storage capacity compared to other memory technologies. - Slower write speeds compared to some alternative models. - Relatively higher cost per kilobit compared to larger memory chips.

Working Principles

The AT25256AU2-10UI-2.7 operates based on the principles of EEPROM technology. It uses electrically controlled floating gate transistors to store and retrieve data. The memory cells can be individually programmed and erased using electrical signals, allowing non-volatile data storage even when power is removed.

Detailed Application Field Plans

The AT25256AU2-10UI-2.7 finds applications in various electronic devices that require non-volatile data storage, such as: - Consumer electronics (e.g., digital cameras, set-top boxes) - Automotive systems (e.g., engine control units, infotainment systems) - Industrial equipment (e.g., measurement instruments, automation controllers) - Medical devices (e.g., patient monitoring systems, diagnostic equipment)

Detailed and Complete Alternative Models

Some alternative models to the AT25256AU2-10UI-2.7 include: - AT25DF256A: Serial Flash Memory IC with similar capacity and interface. - CAT24C256: I2C-Compatible Serial EEPROM with the same memory size. - M95640: SPI-Compatible EEPROM IC with lower capacity but faster write speeds.

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