Datasheet > DS28E18

DS28E18

更新时间： 2024-11-24 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
70页	1127K
描述
1-Wire?至I2C/SPI桥接芯片，带指令顺序控制

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DS28E18 数据手册

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DS28E18

1-Wire to I C/SPI Bridge with Command

Sequencer

General Description

Benefits and Features

● Operate Remote I C or SPI Devices Using Single-

The DS28E18 is a simple communications bridge that re-

sides at a remote SPI or I C sensor and allows the sen-

Contact 1-Wire Interface

sor to be controlled by just two wires coming from the

host system. It reduces the wire count from six (for SPI) or

four (for I C). These two wires use Maxim’s 1-Wire proto-

col that combines power and signal on a single wire, and

which is driven by the programmable I/O pins on the host’s

microcontroller. The 1-Wire network supports connection

lengths up to 100m and 10 sensor nodes or more.

• Extending I C/SPI Communication Distance

• Reduce Six Wires (for SPI) or Four Wires (for I C)

to Two Wires

• 512-Byte Sequencer for Autonomous Operation of

Attached Devices

• Two Configurable GPIO Pins for Additional

Peripheral Control

The IC provides a 512-byte command sequencer in SRAM

that can be loaded with multiple I C or SPI commands.

● No External Power Required

• DS28E18 Parasitically Powered from 1-Wire

Once loaded, the host controller sends a command to

execute the sequence, power, and collect data from at-

• I C/SPI Peripheral Power Derived from the 1-Wire

Line

tached I C or SPI peripherals. A subsequent 1-Wire com-

mand reads collected data. Power for attached sensors

or peripherals is sourced from the 1-Wire line making

the DS28E18 a very efficient solution to remotely power

and control complex I C or SPI devices such as sensors,

ADCs, DACs, and display controllers.

● Flexible 1-Wire and I C/SPI Master Operational

Modes

• Supports Standard (11kbps) and Overdrive

(90kbps) 1-Wire Communication

• 100kHz, 400kHz, and 1MHz for I C Slaves

When used as a bridge for I C slave devices, the

• Up to 2.3MHz for SPI Slaves

DS28E18 communicates at standard mode (100kHz), fast

mode (400kHz) or fast-mode plus (Fm+, 1MHz). In SPI

mode, multiple clock rates are supported up to 2.3MHz.

● Easy to Integrate

• Small, 2mm x 3mm x 0.75mm, 8-Pin TDFN

Package

• -40°C to +85°C Operation

• 2.97V to 3.63V Operating Voltage Range

Configuring for I C or SPI operation is performed with a

1-Wire command; I C is the power-on default. When oper-

ating in I C mode, two programmable GPIO pins are avail-

able for additional peripheral control.

Ordering Information appears at end of data sheet.

Each DS28E18 provides a unique and secure 64-bit ROM

identification number (ROM ID) that serves as the device's

address on the 1-Wire bus. Multiple DS28E18 devices can

coexist with other devices in a 1-Wire network and be ac-

cessed individually without affecting other devices.

Applications

● Examining Environmental Conditions

● Accessory Identification and Control

● Equipment Configuration and Monitoring

● Grain Elevator Monitoring

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

19-100832; Rev 0; 6/20

12 3 4 5 6 7...70

中文翻译

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与DS28E18相关器件

型号	品牌	获取价格	描述	数据表
DS28E22	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 2Kb User EEPROM
DS28E22	ADI	获取价格	内置1-Wire SHA-256和2Kb用户EEPROM的DeepCover安全认证方案
DS28E22_V01	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E22P	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 2Kb User EEPROM
DS28E22P+	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E22P+T	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E22Q	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 2Kb User EEPROM
DS28E22Q+T	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 2Kb User EEPROM
DS28E25	MAXIM	获取价格	The DS28E25 combines crypto-strong
DS28E25	ADI	获取价格	内置1-Wire SHA-256和4Kb用户EEPROM的DeepCover安全认证方案

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