DS2431
1024-Bit 1-Wire EEPROM
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1Kb Serial EEPROM Operates from Single-Contact 1-Wire Interface
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Features
- Easily Add Traceability and Relevant Information to Any Individual System
- 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
- Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode (Write to 0)
- Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
- Minimalist 1-Wire Interface Lowers Cost and Interface Complexity
- IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, typ)
- Reads and Writes Over a Wide Voltage Range from 2.8V to 5.25V from -40°C to +85°C
- Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps
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The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop, 1-Wire net environment.
Applications
- Accessory/PC Board Identification
- After-Market Management of Consumables
- Analog Sensor Calibration Including IEEEP 1451.4 Smart Sensors
- Ink and Toner Print Cartridge Identification
- Medical Sensor Calibration Data Storage
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DS2431
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Smart Cable Aids Quality Control and Authentication
Implementing Nonvolatile, Nonresettable Counters for Embedded Systems
Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact
Transition Guide: Replacing the DS2430A with the DS2431
How to Level Shift 1-Wire Systems
Wirelessly Powering and Accessing a 1-Wire Network
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
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Apr 14, 2020
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
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RECOMMENDED FOR NEW DESIGNS |
1-Wire SHA3-256 Secure Authenticator with DS2431/DS28E07 Compatibility |
Evaluation Kits 6
DS9481R-3C7
USB-to-1-Wire/iButton Adapter
Features and Benefits
- Driver Support for Windows® 11 and Windows 10 Operating Systems
- Enumerates as a Virtual PC COM Port by Use of the Prolific PL-2303GC USB-to-UART Bridge IC
- Emulates the DS2480B 1-Wire Line Driving Functionality
- 1-Wire OTP/EPROM Programming Provided Without the Need of an External Power Supply (12V on OW, 7V on PULSE)
- 3.3V Read/Write Operation to 1-Wire/iButton Devices
- RJ11 Interface for Standard Connectivity Accessories such as the DS9120 Socket Adapter
- Supports Standard and Overdrive 1-Wire Communication
- Provides Strong Pullup to 3.3V
- Fully Compliant with USB 2.0 Specification
Product Detail
The DS9481R is a USB-to-1-Wire adapter for easy PC connectivity to 1-Wire devices. The adapter provides an RJ11 connector with the signals to communicate with all 1-Wire and iButton devices that support a 3.3V data I/O level. Additionally, the adapter provides the support and signaling to program 1-Wire/iButton EEPROM and one-time programmable (OTP)/EPROM devices. To provide a total hardware solution, the DS9481R can readily be used with the DS9120 socket adapter to create a 1-Wire PC programmer for 1-Wire peripheral devices (contact factory for more information). The equivalent peripheral hardware solution for the iButton is the DS1402D-DR8.
Resources
DS9090K
1-Wire Device Evaluation Kit Rev B4
Features and Benefits
- 1pc. PCB: 1-Wire Device Evaluation Board
- 1pc. RJ11 male to RJ11 male cable, 7ft
- 1pc. 1-Wire USB adapter with RJ11 Maxim DS9490R#
- 1pc. 64-bit silicon serial number (3-pin TO92) Maxim DS2401+
- 1pc. 1-Wire dual-addressable switch plus 1kb EPROM memory (6-pin TSOC) Maxim DS2406P+
- 1pc. 1-Wire dual-channel addressable switch (6-pin TSOC) Maxim DS2413P+
- 1pc. 1024-bit 1-Wire EEPROM (3-pin TO92) Maxim DS2431+
- 1pc. 4Kb 1-Wire EEPROM (3-pin PR-35) Maxim DS2433+
- 1pc. 4096-Bit Addressable 1-Wire EEPROM with PIO (on EV kit) Maxim DS28E04S-100+
- 1pc. 20Kb 1-Wire EEPROM (3-pin TO92) Maxim DS28EC20+
- 1pc. Package of 11 2-pin shunts for jumpering
Product Detail
The DS9090K provides the hardware and software necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. All 1-Wire EEPROM, EPROM, and ROM devices are readable with the DS9090K. All 1-Wire devices with memory or PIO/switches can be written with the DS9090K except 1-Wire EPROM devices*. In this way, the engineer can evaluate 1-Wire chips for potential design purposes or support end-product development activity. Kit operation requires a host PC. Demonstration software consists of the OneWireViewer (a Java™ program). For 32-bit and 64-bit Windows® operating systems, the OneWireViewer comes as part of the 1-Wire Drivers install package. For other operating systems, refer to the online version of the OneWireViewer.
DS9090EVKIT
1-Wire Device Evaluation Kit
Features and Benefits
- Easy Setup with USB Adapter
- Fully Compliant with USB 2.0 Specification
- Software Runs on Windows 8, Windows 7, WindowsVista®, and Windows XP® OS (32-Bit and 64-Bit Versions)
- Convenient On-Board Test Points and Dual TO92 Socket
- Standard RJ11 Connector Interfaces to DS9120 Socket Boards
- Free Download of 1-Wire Drivers and OneWireViewer Demonstration Software
- Compatible with Other 1-Wire Devices Purchased Separately
Product Detail
The DS9090EVKIT evaluation system (EV system) consists of a DS9490+ USB-to-1-Wire®/iButton® adapter for PC connectivity, a DS9120P+ socket board with RJ11 cable, and seven different 1-Wire devices. This EV system provides the special hardware and software system to exercise the features of 1-Wire devices with memory or PIO/switches, except 1-Wire EPROM devices. (EPROM devices such as the DS2502 and DS2506 require a different adapter (DS9481R-3C7) to perform an EPROM write. This adapter can be purchased separately.) 1-Wire EPROM devices are available for sampling.
The EV system software consists of the OneWireViewer (a Java® program) that runs under Windows ® OS and comes as part of the 1-Wire drivers installation package.
DS9120P
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
Resources
DS9120Q
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
DS9120
Socket Boards for Evaluating 1-Wire Devices
Product Detail
The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.
Tools & Simulations 1
Software Development 2
