1-Wire®-to-IC Master Bridge

The DS28E17 is a 1-Wire slave to I2C master bridge device that interfaces directly to I2C slaves at standard (100kHz max) or fast (400kHz max). Data transfers serially by means of the 1-Wire® protocol, which requires only a single data lead and a ground return. Every DS28E17 is guaranteed to have a unique 64-bit ROM registration number that serves as a node address in the 1-Wire network. Multiple DS28E17 devices can coexist with other devices in the 1-Wire network and be accessed individually without affecting other devices. The DS28E17 allows using complex I2C devices such as display controllers, ADCs, DACs, I2C sensors, etc. in a 1-Wire environment. Each self-timed DS28E17 provides 1-Wire access for a single I2C interface.

Applications

* Accessory Identification and Control

* ADCs/DACs

* Display Controllers

* I2C Sensors

* Converts 1-Wire Communication Protocol to I2C Master I/O

* Operates I2C Slave Peripherals over the Single-Contact, 1-Wire Interface

* Extend I2C Communication Distance with 1-Wire Protocol

* 100 Meters (typ) in Standard Speed for a Properly Configured Network

* Flexible 1-Wire Slave and I2C Master Operational Modes

* Supports 15kbps and 77kbps 1-Wire Protocol with Packetized I2C Data Payloads

* Factory-Programmed, Unique 64-Bit 1-Wire ROM ID Provides Unalterable Serial Number to End Equipment

* Standard 100kHz and 400kHz Communication Rates for I2C

* I2C Clock Stretching Automatically Supported

* Low Power Consumption

* 0.3µA (typ) in Sleep Mode

* 2.6mA (typ) when Operational

* Separate Pins for Sleep and Wakeup Flexibility

* Remote Power Controlled by an Awake Pin

* Sleep Mode Enabled by Sleep Pin or a 1-Wire Device Command

* Easy to Integrate

* 3.3V(nom) Supply, Small 4mm x 4mm x 0.75mm TQFN package, -40°C to +85°C Operation

* Evaluation HW and SW Available