This is our 2nd release (17/3) of DS28E17 breakout board. The 1st board release (16/3) still available on the request.

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.

Features:

• Converts 1-Wire Communication Protocol to I2C Master I/O
• Extend I2C Communication Distance with 1-Wire Protocol - Typically 100meters in Standard Speed for a Properly Configured Network
• 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

Board Options:

• Option 1: Similar to the original 16/3 release (3V3 and 3V3AWK not in use and connected to VIN=VDD DS28E17 that should be between 2.6V and 3.6V)

• Option 3: as Option 2 (except VIN=1.8V-5.5V) plus Buck-Boost ISL9120 VOUT=3.3V Switching Regulator, TPS22860 Ultra-low leakage load switch, HDC1080 Temperature/Humidity sensor, three LEDs (for BUSY,ED and XD pins) and 3K3 I2C pull-up resistors.

Additional RJ25 6P6C Breakout Board can be used to sandwich with the main board and provides:

• RJ-11/25 cable connectivity (for example, cab be paired with ClosedCube DS2484 or ClosedCube DS2482-800 w/shield)
• host up to four 1-Wire ICs (DS18S20,DS2431 etc) 3 Pins TO-92 package

Technical details:

• Mfr. Part No.: Maxim Integrated DS28E17Q+
• Designed and Assembled in London, UK

Documents:

Maxim Integrated - Extending I2C Communication Distance with the DS28E17