MAXREFDES132#

MAXREFDES132# Datasheet

MAXREFDES132# 1-Wire Shield

Part	Datasheet
MAXREFDES132#	MAXREFDES132# (pdf)

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System Board 6304 MAXREFDES132# 1-Wire Shield MAXREFDES132# provides a convenient platform for interfacing with devices, Evaluation Kits EV kits , and devices using the DS2484 master, or a master on D2 of the Arduino pinout. • DS2484 master • F5 iButton socket • 6P6C jack • mbed.org library and Arduino libraries • shield form factor Competitive Advantages • Portable • Compact • Flexible • Cost effective • Network • Data Logging • Rapid Prototyping Introduction Maxim’s 1-Wire bus continues to flourish in the era of IoT. This unique protocol provides communication and power along a single wire, at relatively long distances. Now, with MAXREFDES132#, Maxim merges a reliable, hardware based 1-Wire master with Arduino and mbed.org platforms. MAXREFDES132# provides a convenient platform for interfacing with 1-Wire devices, 1-Wire EV kits, and iButton through the DS2484 I2C-to-1-Wire master, or a bit-bang master on D2 of the Arduino form-factor pinout. Both masters are supported by the mbed OneWire Library and the Arduino Library. Bit Banging is only supported on the MAX32600MBED platform, the DS2484 I2C-to-1-Wire master can be used on any mbed platform. System Diagram Figure The MAXREFDES132# reference design block diagram. Detailed Circuit Description Figure 1 is a block diagram of MAXREFDES132#. The MAX3394E two-channel bidirectional level-translator provides compatibility between 5V and 3.3V platforms using the IOREF pin of the Arduino form factor. The DS2484 I2C-to-1-Wire master provides internal user-adjustable timers that relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. In addition, the 1-Wire bus can be powered down under software control through D3 of the Arduino form-factor pinout. D2 can be used to bit bang the 1-Wire bus by installing JP1 on pins 1-2 and installing JP2 to connect the provided pullup to the bus. Bit Banging is only supported by the OneWire Library on mbed for the MAX32600MBED board. Detailed Description of Firmware A OneWire Library that supports all of our silicon masters from one common API has been developed for ARM micros using the online development environment mbed.org. The library and example programs can be found at the following links. • mbed.org o Library o Demo Program • Arduino o Library o Example programs for Arduino can be found in the library download folder OneWire/examples The demo program iterates through the devices on the 1-Wire bus, and prints their 64-bit ROM IDs to a terminal. If the DS1920 is found, a temperature conversion is executed and the temperature is displayed in the terminal. Figure Demo program flow chart. Quick Start Required equipment: • PC with a USB port • MAXREFDES132# • Compatible Arduino mbed platform Procedure The reference design is fully assembled and tested. Follow the steps below to verify board operation. mbed.org Connect MAXREFDES132# to your platform. Ensure JP1 and JP2 are configured properly for the master you would like to use. DS2484 JP1 on pins JP2 removed. Bit Bang JP1 on pins JP2 installed. Bit Bang is only supported on MAX32600MBED platform. Install the provided DS1920 iButton, or user supplied device. Connect USB cable from the PC to your platform. If you have never used mbed, setup an account and add your platform to your online compiler according to the instructions on your platform's product page. If you are using Windows and have never used serial communications between your PC and your mbed platform, follow the instructions. Navigate your browser to the following link. Click the 'Import this program' button and import the demo as a 'program' Ensure that the #define for the master you want to use is uncommented and all others commented out Compile and download the resulting binary to your platform. Open Hyperterminal, or your favorite terminal emulator to find the appropriate COM port for your platform, and configure the connection for 9600bps, with no flow control. Ensure the terminal is configured for 'Auto' receive and 'CR+LF' transmit. Press the reset button on your platform and exercise the demo. Arduino Download the OneWire Library and install it to your libraries folder following the directions. Connect MAXREFDES132# to your Arduino board. Ensure JP1 and JP2 are configured properly for the master you would like to use DS2484 JP1 on pins JP2 removed master JP1 on pins JP2 installed. Install the provided DS1920 iButton, or user supplied device Connect USB cable from the PC to your Arduino board. Ensure that you have the COM port that your Arduino board is connected to selected in the Arduino IDE. Download the example program to your Arduino board and open the Serial terminal. is a registered trademark of Maxim Integrated Products, Inc. Arduino is a registered trademark of Arduino LLC. ARM, Cortex, and mbed are registered trademarks of ARM Holdings. iButton is a registered trademark of Maxim Integrated Products, Inc. Windows is a registered trademark and registered service mark of Microsoft Corporation. 2017 Maxim Integrated

PDF Datasheet Preview

System Board 6304

MAXREFDES132# 1-Wire Shield

MAXREFDES132# provides a convenient platform for interfacing with devices, Evaluation Kits EV kits , and devices using the DS2484 master, or a master on D2 of the Arduino pinout.
• DS2484 master
• F5 iButton socket
• 6P6C jack
• mbed.org library and Arduino libraries
• shield form factor

Competitive Advantages
• Portable
• Compact
• Flexible
• Cost effective
• Network
• Data Logging
• Rapid Prototyping

Introduction Maxim’s 1-Wire bus continues to flourish in the era of IoT. This unique protocol provides communication and power along a single wire, at relatively long distances. Now, with MAXREFDES132#, Maxim merges a reliable, hardware based 1-Wire master with Arduino and mbed.org platforms. MAXREFDES132# provides a convenient platform for interfacing with 1-Wire devices, 1-Wire EV kits, and iButton through the DS2484 I2C-to-1-Wire master, or a bit-bang master on D2 of the Arduino form-factor pinout. Both masters are supported by the mbed OneWire Library and the Arduino Library. Bit Banging is only supported on the MAX32600MBED platform, the DS2484 I2C-to-1-Wire master can be used on any mbed platform.

System Diagram

Figure The MAXREFDES132# reference design block diagram.

Detailed Circuit Description Figure 1 is a block diagram of MAXREFDES132#. The MAX3394E two-channel bidirectional level-translator provides compatibility between 5V and 3.3V platforms using the IOREF pin of the Arduino form factor. The DS2484 I2C-to-1-Wire master provides internal user-adjustable timers that relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. In addition, the 1-Wire bus can be powered down under software control through D3 of the Arduino form-factor pinout.

D2 can be used to bit bang the 1-Wire bus by installing JP1 on pins 1-2 and installing JP2 to connect the provided pullup to the bus. Bit Banging is only supported by the OneWire Library on mbed for the MAX32600MBED board. Detailed Description of Firmware A OneWire Library that supports all of our silicon masters from one common API has been developed for ARM micros using the online development environment mbed.org. The library and example programs can be found at the following links.
• mbed.org o Library o Demo Program
• Arduino o Library o Example programs for Arduino can be found in the library download folder OneWire/examples

The demo program iterates through the devices on the 1-Wire bus, and prints their 64-bit ROM IDs to a terminal. If the DS1920 is found, a temperature conversion is executed and the temperature is displayed in the terminal.

Figure Demo program flow chart.

Quick Start

Required equipment:
• PC with a USB port
• MAXREFDES132#
• Compatible Arduino mbed platform

Procedure

The reference design is fully assembled and tested. Follow the steps below to verify board operation.
mbed.org

Connect MAXREFDES132# to your platform. Ensure JP1 and JP2 are configured properly for the master you would like to use.

DS2484 JP1 on pins JP2 removed. Bit Bang JP1 on pins JP2 installed. Bit Bang is only supported on MAX32600MBED
platform. Install the provided DS1920 iButton, or user supplied device. Connect USB cable from the PC to your platform. If you have never used mbed, setup an account and add your platform to your online compiler
according to the instructions on your platform's product page. If you are using Windows and have never used serial communications between your PC and your
mbed platform, follow the instructions. Navigate your browser to the following link. Click the 'Import this program' button and import the demo as a 'program' Ensure that the #define for the master you want to use is uncommented and all others commented out Compile and download the resulting binary to your platform. Open Hyperterminal, or your favorite terminal emulator to find the appropriate COM port for your platform, and configure the connection for 9600bps, with no flow control. Ensure the terminal is configured for 'Auto' receive and 'CR+LF' transmit. Press the reset button on your platform and exercise the demo.

Arduino

Download the OneWire Library and install it to your libraries folder following the directions.

Connect MAXREFDES132# to your Arduino board. Ensure JP1 and JP2 are configured properly for the master you would like to use

DS2484 JP1 on pins JP2 removed master JP1 on pins JP2 installed.

Install the provided DS1920 iButton, or user supplied device Connect USB cable from the PC to your Arduino board. Ensure that you have the COM port that your Arduino board is connected to selected in the

Arduino IDE. Download the example program to your Arduino board and open the Serial terminal.
is a registered trademark of Maxim Integrated Products, Inc. Arduino is a registered trademark of Arduino LLC. ARM, Cortex, and mbed are registered trademarks of ARM Holdings. iButton is a registered trademark of Maxim Integrated Products, Inc. Windows is a registered trademark and registered service mark of Microsoft Corporation.
2017 Maxim Integrated

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MAXREFDES132# Datasheet file may be downloaded here without warranties.

Datasheet ID: MAXREFDES132# 647474