DS2502/T&R/SL

Product Overview

• Category: Electronic Component
• Use: Identification and Authentication
• Characteristics: Unique Serial Number, Non-volatile Memory
• Package: SOT-23
• Essence: Silicon Integrated Circuit
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Memory Size: 1Kbit
• Communication Interface: 1-Wire
• Operating Voltage: 2.8V to 6.0V
• Temperature Range: -40°C to +85°C
• Data Retention: Up to 10 years
• Write Endurance: 100,000 cycles

Pin Configuration

The DS2502/T&R/SL has three pins:

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

Functional Features

• Unique Serial Number: Each DS2502/T&R/SL has a factory-programmed, unalterable 64-bit serial number.
• Non-volatile Memory: The device features 1Kbit of non-volatile memory for storing user-defined data.
• 1-Wire Interface: The 1-Wire communication interface allows for simple and efficient data transfer with minimal wiring requirements.
• Overdrive Mode: The DS2502/T&R/SL supports an overdrive mode, enabling faster data transfer rates.

Advantages and Disadvantages

Advantages: - Compact package size (SOT-23) allows for easy integration into various electronic systems. - Unique serial number ensures product authenticity and traceability. - Non-volatile memory enables data storage even when power is disconnected. - 1-Wire interface simplifies system design and reduces wiring complexity.

Disadvantages: - Limited memory capacity (1Kbit) may not be sufficient for certain applications requiring larger data storage. - Temperature range limited to -40°C to +85°C, which may restrict usage in extreme environments.

Working Principles

The DS2502/T&R/SL operates based on the 1-Wire communication protocol. It uses a single data line (DQ) for both power supply and bidirectional data transfer. The device is powered by the VCC pin and communicates with the host system through the DQ pin.

To read or write data, the host system sends specific commands to the DS2502/T&R/SL via the 1-Wire interface. The device responds accordingly, allowing the host to access the unique serial number or store/retrieve user-defined data from its non-volatile memory.

Detailed Application Field Plans

The DS2502/T&R/SL finds applications in various fields, including:

1. Product Authentication: The unique serial number can be used to verify the authenticity of products, preventing counterfeiting.
2. Asset Tracking: The DS2502/T&R/SL can be integrated into assets such as electronic devices or equipment to track their location and ownership.
3. Data Logging: With its non-volatile memory, the device can store important data logs, such as temperature or usage records.
4. Access Control: The DS2502/T&R/SL can be utilized in access control systems, providing secure identification and authorization.

Alternative Models

Other alternative models similar to the DS2502/T&R/SL include:

1. DS2401: Similar 1-Wire electronic component with a unique serial number but without non-volatile memory.
2. DS2431: Offers higher memory capacity (1024 bits) compared to the DS2502/T&R/SL.
3. DS28E05: Provides additional features like SHA-1 authentication and increased memory size (5120 bits).

Note: The above alternative models are suggestions and may not cover all available options.

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