Part Number: DS2431P+T&R

Manufacturer: Analogue Devices Inc./Maxim Integrated


Shipped from: Shenzhen/HK Warehouse

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DS2431P+T&R Introduction

The DS2431P+T&R is a 1-wire EEPROM chip with 1024 bits that was made by Maxim Integrated. This guide is meant to give an overview of the DS2431P+T&R, including its features, specifications, transmission protocol, and instructions on how to use it.

Introduction to the DS2431P+T&R

Maxim Integrated made the DS2431P+T&R, which is a 1-wire EEPROM chip with 1024 bits. It is a flexible memory device that can store accurate data in a small space. The DS2431P+T&R uses the 1-Wire protocol, which makes it easy to add to devices with little wiring.

Features and Capabilities

The DS2431P+T&R has the following important traits and functions:

● Memory Organisation

The chip’s memory is split into four pages of 256 bits each. This arrangement makes it easy to store and get information.

● Write Protection and EPROM-Emulation Mode

The DS2431P+T&R lets you protect each memory page from being written to separately. It also has an EPROM-emulation mode, in which bits can only go from a 1 to a 0 state. These traits make data more secure and reliable.

● 1-Wire Communication

The DS2431P+T&R talks over a 1-wire bus with a single wire. This bus makes connecting easier and makes it possible for more than one device to talk to each other on the same bus.

● Unique ROM Registration Number

Each DS2431P+T&R chip has a 64-bit ROM registration number that cannot be changed. This number is lasered into the chip at the factory. In a multidrop 1-Wire network, this registration number acts as the device’s address, making sure that each device can be found.

DS2431P+T&R Applications

The DS2431P+T&R is used in many different areas where safe and effective data storage is needed. Some of the most popular uses are:

  • Product recognition: The DS2431P+T&R can be used for product recognition and authentication because it has a unique ROM registration number. It can be used to stop fraud or keep track of things.
  • setup storage: The DS2431P+T&R’s EEPROM memory can be used to store setup data like device settings or user preferences. It is often used in embedded systems or Internet of Things (IoT) gadgets.
  • Data Logging: The DS2431P+T&R can be used for data logging because it is small and can store data in a safe way. It can store data from sensors, event logs, and other important information.
  • Security Tokens: The DS2431P+T&R can be used as a security token or key storage device because it can’t be written on. It can keep encryption keys or other private information in a safe place.
  • Industrial Control Systems: The DS2431P+T&R is well-suited for use in industrial control systems, where it can store calibration data, device configurations, and other important factors.

These are just a few of the many ways the DS2431P+T&R can be used. It is a popular choice for storing data because it can be used in many ways and is reliable.

Communication Protocol

1-Wire bus

The 1-Wire bus is a way for devices to talk to each other that was made by Maxim Integrated. It is a low-cost serial transmission interface that only needs one data line and a connection to ground. The 1-Wire bus lets multiple devices talk to each other using a unique addressing system. The 1-Wire bus is used by the DS2431P+T&R to talk to the host machine.

1-Wire protocol overview

The 1-Wire protocol used by the DS2431P+T&R consists of a set of rules and commands that govern the communication between the host and the device. Here is a brief overview of the 1-Wire protocol:

  • The host starts contact by sending a “reset” signal on the 1-Wire bus. The DS2431P+T&R reacts to the bus with a presence pulse to show that it is there.
  • ROM Command: Once the DS2431P+T&R has been set up, the host can send orders to it. One of the important statements is the ROM command, which lets the host talk to a specific device on the bus by using its unique ROM registration number.
  • Read and Write Commands: The host can send data to and from the DS2431P+T&R by sending read and write commands. With these words, you can get to the device’s scratchpad memory and EEPROM memory.
  • Data Transfer: The host and the DS2431P+T&R take turns sending and getting bits as the data is transferred. The least important bit (LSB) is sent first.
  • CRC Check: The 1-Wire system uses a cyclic redundancy check (CRC) to make sure that data is correct. Both the server and the DS2431P+T&R do CRC calculations to make sure that the data being sent is correct.

Addressing and data transfer


For addressing, the DS2431P+T&R uses its unique 64-bit ROM registration number. The host sends a ROM order followed by the 64-bit address of the DS2431P+T&R device it wants to talk to on the 1-Wire bus. The DS2431P+T&R matches the address it receives to its own ROM registration number and then acts accordingly.

Data Transfer

  • The host sends the right read or write commands to the DS2431P+T&R to move data to or from it. The data is sent one bit at a time, with both the host and the device sending and getting it. First comes the LSB.
  • The DS2431P+T&R uses scratchpad memory when it needs to write something. The server checks the data after it is written to an 8-byte scratch pad. Once the data has been checked, a programme can be used to copy it to the EEPROM memory.
  • During a read process, the host sends a “read” command, and the DS2431P+T&R sends the data that was asked for in response.
  • To ensure that the data sent is accurate, both the server and the DS2431P+T&R perform CRC calculations.
  • By using the addressing and data transfer mechanisms and following the 1-Wire protocol, the host machine can talk to the DS2431P+T&R and get to its memory.

Frequently Asked Questions

● What makes the DS2431P+T&R different from the DS2431?

The DS2431P+T&R and the DS2431 are both basically the same chip. The “P+T&R” part of the name refers to how the chip is packaged. “P+T&R” means “Plastic, Tape, and Reel” packaging, which is often used in automated processes for making and putting things together.

● Can I connect more than one DS2431P+T&R to the same 1-wire bus?

Yes, the DS2431P+T&R can talk to more than one place on the 1-Wire bus. Each DS2431P+T&R device has its own ROM registration number. This makes it possible to call each device on the bus separately. On the same 1-Wire bus, you can join multiple devices at the same time.

● How do I put information on the DS2431P+T&R?

Follow the 1-Wire technique to write data to the DS2431P+T&R. First, send a ROM command, then the 64-bit address of the DS2431P+T&R device you want to talk to. Then, use the right write commands to put the data in the scratchpad’s memory. After making sure the information is correct, you can copy it from the scratchpad to the device’s EEPROM memory.

● Can I lock down certain pages of memory on the DS2431P+T&R?

Yes, the DS2431P+T&R lets you protect each of its four memory pages from being written to. This feature lets you protect certain parts of the memory from being changed or deleted by accident.

● Can data saved in the DS2431P+T&R be changed?

During normal use, the DS2431P+T&R lets you put and change data in its memory. But the chip also has a mode that acts like an EPROM, where bits can only change from 1 to 0. This mode gives a better level of data security and integrity by making it impossible to change data after it has been written.

● Can the DS2431P+T&R be used in gadgets that run on batteries?

Yes, the DS2431P+T&R is made to work in low-power situations and can be used in devices that run on batteries. It uses little power when it’s not being used and can be powered straight from the 1-Wire bus, so it can be used in energy-saving applications.

These answers should help you understand the DS2431P+T&R and answer some typical questions about how it works and what it can do. If you need more help or have more detailed questions, feel free to ask.

Closing Thoughts

The DS2431P+T&R is a flexible and reliable EEPROM chip that can be used for many different things. Its 1-Wire transmission protocol makes wiring easier and lets it connect to more than one place. The write protection and EPROM-emulation modes of the chip give you more ways to protect your information. The DS2431P+T&R is a good choice for embedded systems, IoT devices, and industrial control applications because it is small and uses little power. Use its power to store data in your projects and systems in a safe and effective way. Get in touch with ICRFQ to get the DS2431P+T&R and see what it can do.

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Kevin Chen