AT24C256BW-SH-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile memory storage
• Characteristics: High capacity, low power consumption
• Package: 8-lead SOIC (Small Outline Integrated Circuit)
• Essence: Serial EEPROM (Electrically Erasable Programmable Read-Only Memory)
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Capacity: 256 kilobits (32 kilobytes)
• Interface: I2C (Inter-Integrated Circuit)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 100 years

Pin Configuration

The AT24C256BW-SH-T has 8 pins arranged as follows:

```

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| | | U | | | |___________|

Pin Configuration:

1. A0: Address Input
2. A1: Address Input
3. A2: Address Input
4. GND: Ground
5. SDA: Serial Data
6. SCL: Serial Clock
7. WP: Write Protect
8. VCC: Power Supply ```

Functional Features

• High-speed I2C interface for easy integration with microcontrollers
• Byte-wise and page-wise write operations
• Software write protection using the WP pin
• Self-timed write cycle completion
• Hardware and software data protection mechanisms
• Low power consumption in standby mode

Advantages and Disadvantages

Advantages: - Large storage capacity - Low power consumption - High-speed data transfer - Long data retention period

Disadvantages: - Limited write endurance - Requires an external microcontroller for operation

Working Principles

The AT24C256BW-SH-T is a serial EEPROM that uses I2C interface to communicate with a microcontroller. It stores data in non-volatile memory cells, which can be electrically erased and reprogrammed. The device operates by sending commands and data through the SDA (Serial Data) and SCL (Serial Clock) lines. It supports both byte-wise and page-wise write operations, allowing efficient data storage and retrieval.

Detailed Application Field Plans

The AT24C256BW-SH-T is widely used in various applications, including but not limited to:

1. Consumer Electronics: Used for storing configuration settings, user preferences, and firmware updates in devices such as TVs, set-top boxes, and audio systems.
2. Industrial Automation: Used for data logging, parameter storage, and system configuration in industrial control systems, PLCs (Programmable Logic Controllers), and sensors.
3. Automotive: Used for storing vehicle-specific data, such as mileage, service history, and calibration values in automotive electronics, including ECUs (Engine Control Units) and infotainment systems.
4. Medical Devices: Used for storing patient data, device configurations, and firmware updates in medical equipment like patient monitors, infusion pumps, and diagnostic devices.

Detailed and Complete Alternative Models

1. AT24C01A: 1 kilobit (128 bytes) capacity, compatible with AT24C256BW-SH-T in terms of pin configuration and functionality.
2. AT24C512C: 512 kilobits (64 kilobytes) capacity, higher storage capacity than AT24C256BW-SH-T.
3. AT24CM02: 2 megabits (256 kilobytes) capacity, double the storage capacity of AT24C256BW-SH-T.

These alternative models offer different storage capacities to suit various application requirements while maintaining compatibility with the AT24C256BW-SH-T in terms of pin configuration and functionality.

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