DS2431P+T&R

Product Overview

• Category: Integrated Circuit
• Use: Memory
• Characteristics: Nonvolatile, 1-Wire® EEPROM
• Package: SOT-223
• Essence: Serial Number Chip
• Packaging/Quantity: Tape & Reel (3000 pieces per reel)

Specifications

• Memory Size: 1024 bits (128 bytes)
• Operating Voltage: 2.8V to 5.25V
• Data Transfer Speed: Up to 15.4 kbps
• Write Cycle Endurance: 500,000 cycles
• Data Retention: Up to 40 years
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The DS2431P+T&R has a total of 6 pins:

1. VCC: Power supply input
2. GND: Ground connection
3. DQ: 1-Wire data line
4. NC: No connection
5. NC: No connection
6. NC: No connection

Functional Features

• Unique 64-bit ROM serial number
• 1-Wire communication interface
• Supports overdrive mode for faster data transfer
• Software write protection for memory content
• Programmable read-only memory (EPROM) mode
• Low power consumption

Advantages and Disadvantages

Advantages: - Compact package size - Easy integration with 1-Wire systems - High data retention and endurance - Flexible write protection options

Disadvantages: - Limited memory capacity - Relatively slow data transfer speed

Working Principles

The DS2431P+T&R is a nonvolatile memory chip that utilizes the 1-Wire communication protocol. It stores data in its 128-byte EEPROM memory, which can be accessed and modified using the 1-Wire data line. The chip is powered by a supply voltage between 2.8V and 5.25V. It communicates with the host device through a single data line, simplifying the wiring and reducing the number of pins required.

Detailed Application Field Plans

The DS2431P+T&R is commonly used in various applications, including:

1. Identification systems: The unique serial number of each chip makes it suitable for use in identification systems, such as access control, asset tracking, and product authentication.
2. Data logging: The nonvolatile memory allows for reliable storage of data logs, making it useful in applications like temperature monitoring, event recording, and energy metering.
3. Security systems: The write protection feature ensures the integrity of stored data, making it suitable for secure storage of cryptographic keys, security codes, and configuration parameters.

Detailed and Complete Alternative Models

• DS2431: Similar specifications and features, but available in a different package (TO-92)
• DS28E01: Higher memory capacity (1024 bits), but requires additional power supply pins
• DS2502: Lower memory capacity (1024 bits), but supports higher data transfer speed

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