AT25256A-10TU-1.8

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Data Storage

Characteristics: - Non-volatile memory - Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) - 256 Kbit (32 Kbyte) capacity - 10 MHz clock frequency - 1.8V operating voltage

Package: TU (Thin Small Outline Package)

Essence: AT25256A-10TU-1.8 is a serial EEPROM IC used for non-volatile data storage in various electronic devices.

Packaging/Quantity: Typically sold in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory Capacity: 256 Kbit (32 Kbyte)
• Operating Voltage: 1.8V
• Clock Frequency: 10 MHz
• Interface: SPI (Serial Peripheral Interface)
• Write Endurance: 1 million cycles
• Data Retention: 100 years
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT25256A-10TU-1.8 has a total of 8 pins, each serving a specific function:

1. Chip Select (/CS): Enables communication with the IC when pulled low.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to send data to the IC during write operations.
4. Serial Data Output (SO): Outputs data from the IC during read operations.
5. Write Protect (/WP): When pulled low, prevents write operations.
6. VCC: Power supply input (1.8V).
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Pauses ongoing operations when pulled low.

Functional Features

• High-speed data transfer using SPI interface.
• Low power consumption, suitable for battery-powered devices.
• Wide operating temperature range allows usage in various environments.
• Write protection feature prevents accidental data modification.
• Compact package size enables integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention even without power supply. - High write endurance and long data retention period. - Low power consumption extends battery life. - Small form factor facilitates integration into compact devices. - SPI interface provides easy communication with microcontrollers.

Disadvantages: - Limited storage capacity compared to other memory technologies. - Slower data transfer rate compared to some other memory types. - Vulnerable to electromagnetic interference (EMI) due to serial interface.

Working Principles

The AT25256A-10TU-1.8 operates based on the principles of EEPROM technology. It utilizes a floating gate transistor structure to store and retrieve data. The data can be written or erased electrically, making it non-volatile and capable of retaining information even when power is removed.

The IC communicates with external devices using the SPI interface, which allows for high-speed data transfer. The chip select signal (/CS) enables communication, while the clock signal (SCK) synchronizes data transfer. Data is sent and received through the serial data input (SI) and output (SO) pins, respectively.

Detailed Application Field Plans

The AT25256A-10TU-1.8 finds applications in various electronic devices that require non-volatile data storage, such as: - Consumer electronics (e.g., smartphones, tablets, digital cameras) - Automotive systems (e.g., infotainment systems, engine control units) - Industrial equipment (e.g., measurement devices, control systems) - Medical devices (e.g., patient monitoring systems, diagnostic equipment)

Detailed and Complete Alternative Models

1. AT25256B-10TU-1.8: Similar to AT25256A-10TU-1.8, but with improved performance and features.
2. AT25DF256A-SH-T: Serial Flash memory IC with higher capacity and faster data transfer rate.
3. CAT24C256WI-GT3: I2C-compatible EEPROM IC with similar capacity and operating voltage.

These alternative models offer different specifications and interfaces, allowing users to choose the most suitable option based on their specific requirements.

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