DS2431+T&R

Product Overview

• Category: Integrated Circuit
• Use: Memory Chip
• Characteristics: Non-volatile, One-Wire Interface
• Package: T&R (Tape and Reel)
• Essence: Serial EEPROM (Electrically Erasable Programmable Read-Only Memory)
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 1024 bits (128 bytes)
• Interface: One-Wire
• Operating Voltage: 2.8V to 5.25V
• Operating Temperature: -40°C to +85°C
• Write Endurance: 10,000 cycles
• Data Retention: Up to 100 years

Detailed Pin Configuration

The DS2431+T&R has a total of six pins:

1. VCC: Power supply pin (+2.8V to +5.25V)
2. GND: Ground pin (0V reference)
3. DQ: Data pin for the One-Wire interface
4. NC: No Connection (reserved for future use)
5. NC: No Connection (reserved for future use)
6. NC: No Connection (reserved for future use)

Functional Features

• One-Wire Interface: Allows communication with the chip using only a single data line.
• Non-Volatile Memory: Retains data even when power is removed.
• Unique 64-Bit Serial Number: Provides a unique identifier for each chip.
• Overdrive Mode: Enables faster data transfer rates.

Advantages and Disadvantages

Advantages

• Compact Size: Small form factor allows for easy integration into various electronic devices.
• Low Power Consumption: Operates with minimal power requirements.
• High Data Security: Supports a 64-bit unique serial number for authentication purposes.
• One-Wire Interface: Simplifies the design and reduces the number of required pins.

Disadvantages

• Limited Memory Size: With only 1024 bits of storage, it may not be suitable for applications requiring larger memory capacity.
• Slower Data Transfer: The One-Wire interface operates at a lower speed compared to other interfaces.

Working Principles

The DS2431+T&R is based on EEPROM technology, which allows for non-volatile data storage. It utilizes a One-Wire interface, enabling communication with the chip using a single data line. The chip can be accessed by sending specific commands through the data pin (DQ), allowing read and write operations to be performed.

Detailed Application Field Plans

The DS2431+T&R is commonly used in various applications, including:

1. Identification Systems: The unique serial number feature makes it suitable for identification purposes, such as access control systems or asset tracking.
2. Data Logging: Its non-volatile memory capability enables the storage of small amounts of data, making it useful for data logging applications.
3. Embedded Systems: The compact size and low power consumption make it ideal for integration into embedded systems, such as IoT devices or wearable technology.

Detailed and Complete Alternative Models

• DS2431: Similar to DS2431+T&R but without Tape and Reel packaging.
• DS28E01: Offers higher memory capacity (1Kb) and additional features like a SHA-1 engine for secure authentication.

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