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PDF DS1701K Data sheet ( Hoja de datos )
| Número de pieza | DS1701K | |
| Descripción | 1-Wire Thermal Device Evaluation Kit | |
| Fabricantes | Dallas | |
| Logotipo |  |
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FEATURES
§ Demonstrates the Full Features of the Dallas
1-Wire® Thermal Devices, Including:
-DS18B20
-DS18S20
-DS1821
-DS1822
§ Complete Read/Write Access to All Registers
Within the Devices.
§ Measures Temperatures from the Full Range
of the Devices -55°C to +125°C. Fahrenheit
Equivalent is -67°F to +257°F.
§ Celsius and Fahrenheit Temperature Reading
and Charting is Provided for All Supported
Devices.
§ Interfaces to the Serial Port of a PC Running
Windows® 95 or Newer.
INDEX
Evaluation Kit Contents
Equipment Needed
Introduction
Setup and Installation
Board Connections
Software Installation
Selecting the Device
Selecting the COM Port
Program Menus
Register Windows
Program Tabs
Thermometer
Datalogging
Memory
ROM Code
DS1701K
1-Wire Thermal Device Evaluation Kit
1-Wire Board
87-1701K-000*
EVALUATION KIT CONTENTS
1 pc. DS1701K 1-Wire Board
1 pc. DS9123 Serial Port Adapter
1 pc. RJ-11 Phone Cable
1 pc. DS1701K CD Containing:
DS1701K Evaluation Software
DS1701K Related Data Sheets
EQUIPMENT NEEDED
1. A PC Running Windows 95 or Newer with a
CD-ROM Drive and an Available Serial Port
2. A Battery or a Power Supply with Output
Between +3.0V and +5.5
*Kit demonstration boards will vary as they are improved upon over time.
1-Wire is a registered trademark of Dallas Semiconductor.
Windows is a registered trademark of Microsoft Corp.
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MODE
DS1701K
The Mode menu is also only visible when the DS1821 is selected. This allows the user to switch between
the 1-Wire Mode and Thermostat Mode of the DS1821. When entering the Thermostat Mode, the
software will automatically set the power-up operating mode bit of the Status Register and then prompt
the user to “Set VDD to 0V”. When VDD is set to 0V, click OK, and the DQ line will be pulsed 16 times in
order to temporarily enter Thermostat Mode as outlined in the DS1821 data sheet. When exiting
Thermostat Mode, the program will prompt the user to again “Set VDD to 0V”. When that is done, click
OK and DQ will be pulsed 16 times to temporarily enter the 1-Wire Mode and the power-up operating
mode bit of the Status Register is cleared. In order to power-up in the new mode, DQ and VDD should be
low for approximately 10 seconds.
RESOLUTION
The Resolution menu allows the user to select the resolution of the temperature conversion. The
DS18B20 and DS1822 will produce temperature results in 9-, 10-, 11-, or 12-bit resolution. The DS18S20
allows for 9-bit or a High-Resolution mode. The DS1821 allows for 8-bit or a High-Resolution mode.
When the resolution is changed for the DS18B20 or the DS1822, the resolution bits of the configuration
register will be updated. When the High-Resolution mode is selected for the DS18S20 or the DS1821, the
additional steps, as outlined in the device data sheets, will be taken to appropriately read the Count
Remaining and Count Per °C registers and make the required calculations.
PREFERENCES
The Preferences menu allows the user to change COM port settings at any time. Edit Preferences opens
the Select Preferences window. See Selecting the COM Port above.
HELP
Selecting the About topic from the Help menu will open a window containing information about this
program and Dallas Semiconductor.
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