DS2502+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Identification and Memory Device

Characteristics: - Non-volatile memory - Unique 64-bit serial number - Programmable read-only memory (EPROM) - Single-contact 1-Wire® interface - Low power consumption - Small form factor

Package: TO-92

Essence: The DS2502+ is a versatile integrated circuit that combines identification and memory capabilities in a compact package. It is commonly used for various applications requiring unique identification and non-volatile memory storage.

Packaging/Quantity: The DS2502+ is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Memory Size: 1024 bits (128 bytes)
• Operating Voltage: 2.8V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 10 years
• Write Endurance: 100,000 cycles

Detailed Pin Configuration

The DS2502+ features a three-pin configuration:

1. VCC: Power supply pin (2.8V to 6.0V)
2. GND: Ground pin
3. DQ: 1-Wire® data pin

Functional Features

• Unique Serial Number: Each DS2502+ has a factory-programmed 64-bit serial number, ensuring device uniqueness.
• Non-Volatile Memory: The integrated EPROM allows permanent storage of data even when power is removed.
• 1-Wire® Interface: The single-contact interface simplifies communication and reduces wiring complexity.
• Low Power Consumption: The DS2502+ operates with low power requirements, making it suitable for battery-powered devices.
• Small Form Factor: The TO-92 package offers a compact size, enabling integration into space-constrained applications.

Advantages and Disadvantages

Advantages: - Unique identification for each device - Non-volatile memory for permanent data storage - Simple 1-Wire® interface - Low power consumption - Compact form factor

Disadvantages: - Limited memory capacity (1024 bits) - Relatively slower write speed compared to some alternatives

Working Principles

The DS2502+ utilizes the 1-Wire® protocol, which enables communication with the device using only a single data pin. The unique serial number allows for easy identification, while the non-volatile memory ensures data retention even without power. The EPROM can be programmed to store user-defined information securely.

Detailed Application Field Plans

The DS2502+ finds applications in various fields, including but not limited to:

1. Asset Tracking: The unique identification capability makes it suitable for tracking assets such as inventory items, equipment, or vehicles.
2. Authentication Systems: The DS2502+ can be used in access control systems, providing secure identification and authentication.
3. Product Serialization: It is utilized in manufacturing processes to assign unique identifiers to products, aiding in traceability and anti-counterfeiting efforts.
4. Data Logging: The non-volatile memory allows for storing sensor data, making it useful in environmental monitoring or industrial automation applications.

Detailed and Complete Alternative Models

1. DS2401: Similar to DS2502+, but with a smaller memory size (256 bits).
2. DS28E05: Offers increased memory capacity (512 bytes) and additional security features.
3. DS2431: Provides higher memory capacity (1024 bytes) and faster write speeds.

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

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