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MAXREFDES9000: Remote I2C and SPI Sensor Operation Using the DS28E18

MAXREFDES9000

参考设计免责声明 参照  重要声明和免责声明  涵盖参考设计和其他Maxim资源

描述

The MAXREFDES9000 is a reference design showcasing the DS28E18 that demonstrates how to both operate and power remote I2C and serial peripheral interface (SPI) sensors using only two wires. The DS28E18 is an easy-to-use bridge integrated circuit (IC) that operates as a 1-Wire® slave device to a host controller. The IC provides a 512-byte command sequencer that is loaded with commands and control data to operate an I2C or SPI device that is interfaced to the DS28E18. Once loaded, the host controller sends a 1-Wire command to autonomously execute the sequence, power, and collect data from the attached peripherals. A subsequent 1-Wire command reads collected data. Power for the attached sensors or peripherals is sourced from the 1-Wire line enabling a very efficient solution to remotely power and control complex devices such as environmental sensors, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and display controllers. The MAXREFDES9000 is designed to work as a remotely operated environmental monitoring system. This system includes a Liquid Crystal Display (LCD) screen to display the conditions of a variety of remote I2C and SPI sensors, each used to examine environmental conditions such as temperature and humidity.

特征

  • Power and communication to I2C and SPI sensors via two wires
  • 512-byte command sequencer for autonomous operation
  • Up to 10mA at 3.3V sensor power derived from 1-Wire
  • Up to 100m distance with the 1-Wire interface
  • Raspberry Pi® computer enables a powerful computing platform for creating an expansive system of sensors
  • Example source code demonstrates how to interface to various types of I2C and SPI sensors

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设计, 制作, 测试

图中的电路板已经完成封装和测试。不可售。

 

示意图

物料清单(BOM)

Maxim设备 (1)

器件号 名称 产品线 购买 设计套件和评估模块
DS28E18 1-Wire®至I2C/SPI桥接芯片,带指令顺序控制 安全认证器件 立即购买 Design Kits

Maxim设备 (1)

器件号 产品线
安全认证器件
1-Wire®至I2C/SPI桥接芯片,带指令顺序控制

设计资料 (2)

标题 类型 尺寸 日期
maxrefdes9000-bom ZIP 59KB 2020-11-10
maxrefdes9000-schematic ZIP 1MB 2020-11-10
日期 类型
2020-11-10

maxrefdes9000-bom

(ZIP, 59KB)

2020-11-10

maxrefdes9000-schematic

(ZIP, 1MB)

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