Efficient Communication and Control Solution
The DS28E18Q+T 1-Wire to I2C/SPI Bridge with Command Sequencer 8-TDFN is an advanced communications bridge designed to simplify control and reduce wiring complexity. This device enables seamless control of remote SPI or I2C sensors with only two wires from the host system, combining power and signal through Analog Devices' 1-Wire protocol. Capable of supporting up to 100 meters of connection length and multiple sensor nodes, it offers a reliable and efficient solution for various industrial applications.
The DS28E18Q+T comes with a 512-byte command sequencer in SRAM, allowing the host controller to execute complex sequences and collect data from I2C or SPI peripherals efficiently. This device is powered directly from the 1-Wire line, eliminating the need for external power sources and enhancing the overall system efficiency. Whether operating in I2C or SPI mode, it supports multiple clock rates and offers two programmable GPIO pins for additional peripheral control.
Key Features:
- 1-Wire Interface: Operate remote I2C or SPI devices using a single-contact 1-Wire interface.
- Communication Distance Extension: Extend I2C/SPI communication distance up to 100 meters.
- Wire Reduction: Reduce six wires (for SPI) or four wires (for I2C) to just two wires.
- Autonomous Operation: 512-byte sequencer for autonomous operation of attached devices.
- Peripheral Control: Two configurable GPIO pins for additional peripheral control.
- No External Power Needed: Parasitically powered from the 1-Wire line.
- Flexible Modes: Supports multiple operational modes for 1-Wire and I2C/SPI master operations.
- Clock Rates: Standard (11kbps) and Overdrive (90kbps) 1-Wire communication; up to 2.3MHz for SPI and up to 1MHz for I2C.
- Integration and Packaging: Easy to integrate with a small, 8-pin TDFN package (2mm x 3mm x 0.75mm).
- Wide Operating Range: Operates in temperatures from -40°C to +85°C and voltages from 2.97V to 3.63V.
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