background image

                                                                                                               Getting Started with the DS1840K . . .

2 of 13

Setting up the Hardware

1.

 

Choose a device to evaluate.
The DS1840K comes standard with several product samples.  Choose the one that you would like to
evaluate first.

2.

 

Look for the socket U1 (or U2 if you are evaluating the
DS1846) on the DS1840K board.  Your board may have been
shipped with a device already in the socket, or it may have
fallen out/shifted during shipping.  If the device you would
like to evaluate is already in the socket, make sure it is firmly
seated.  Otherwise match up the pin 1 indicators of the board
and device and insert the device into the socket (Figure 2).

3.

 

Connect 5V power supply to board.  As usual, the red banana
jack is Vcc, and the black jack is ground.  Note: if DIP switch
5 is on you may hear the buzzer (depending on your jumper settings).    Figure 2.  U1 Pin 1 Location

4.

 

Connect the DS9123 serial port dongle to your PC.

5.

 

Now connect the cable (6-conductor) from the DS9123 to the RJ-11 jack of the DS1840K Demo
Board.

6.

 

Finally, install the software (next section).

Installing the DS1840K Demo Software

Please note:  In order to maintain compatibility across operating systems, this installation may require you
to reboot your PC.
1.

 

Insert the DS1840K CD into your PC.

2.

 

If your CD autoplay is enabled, then simply follow the prompts.  Otherwise, if the CD does not
automatically start, then run 

setup.exe

 from the CD.

3.

 

If you opt not to install the software on your PC, or if your installation failed, you can still run the
DS1840K software.  The executable 

DS1840K.EXE

 is located in:

(your CD drive letter):\program files\Dallas Semiconductor\DS1840K\DS1840K.EXE

4.

 

You are now ready to begin evaluating.  Skip to the section of the device you would like to evaluate.

DS1845

Pin 1

U1

Summary of Contents for DS1840K

Page 1: ...inated with banana plugs bench supply or modified wall wart transformer for operation of the kit The DS1840K also provides an oscillator buzzer circuit that allows you to hear the potentiometers Kit C...

Page 2: ...buzzer depending on your jumper settings Figure 2 U1 Pin 1 Location 4 Connect the DS9123 serial port dongle to your PC 5 Now connect the cable 6 conductor from the DS9123 to the RJ 11 jack of the DS1...

Page 3: ...ers are installed on J4 or J5 Measuring from Hx x being 0 for pot 0 or 1 for pot 1 to Lx you will see the end to end resistance of the pot For a DS1845 010 you would measure 10KOhms Measuring from Wx...

Page 4: ...w you to hear the changes in resistance in case you do not have a multi meter handy This circuit is enabled disabled by DIP switch 5 labeled 555 ON To configure the circuit to work with the DS1845 set...

Page 5: ...rature range For more detailed information please refer to the datasheet The physical device pins associated with resistor 0 are L0 and H0 Resistor 1 has its own pins L1 and H1 Notice that since these...

Page 6: ...the Write Protect WP signal has an internal pull up resistor If the device is write protected then the wiper can not be moved and the memory can not be modified The defaultDIP switch settings for the...

Page 7: ...S9123 not found then click on the radio button next to COM2 Then click Apply If the status box displays DS9123 ready you are ready to continue Otherwise if you are still experiencing difficulties refe...

Page 8: ...lick on Write to Pot To read the pot setting click on Read Pot Another way to move the pot is by using the spin control up down arrows Click up or down until you reach the desired value Then click on...

Page 9: ...000 Figure 14 2 Wire page The DS1847 48 page allows you to display the current temperature as well as the corresponding resistor values from the lookup tables In addition a fill tool is provided to si...

Page 10: ...The DS1847 only has two memories these being the lookup table for Resistor 0 and the lookup table for Resistor 1 The DS1848 however has both lookup tables as well as a user EEPROM Figure 16 DS1847 48...

Page 11: ...Getting Started with the DS1840K 11 of 13 DS1840K Demo Board Schematic Figure 17 DS1840K Demo Board Schematic...

Page 12: ...with the DS1840K 12 of 13 Inside the DS9123 Serial Port Dongle Figure 18 DS9123 Schematic Check our FTP site for more DS9123 information to be added soon Contact information can be found at the end o...

Page 13: ...orld Wide Web Site www dalsemi com Ordering Information www dalsemi com products ordering pdf FTP Site ftp ftp dalsemi com pub system_extension pots Datasheets www dalsemi com datasheets pdfindex html...

Reviews: