USB-to-I2C Hardware User`s Manual
Contents
1. ke A ken ka DERE V V N 3 ASSSUITIPUL ONS M MM E E as ved bseusveavatanatd weiss vhagi N vida hea saaasin ieee ee 3 Static Handlins Precautions eii esiritta e ear n ae H rek e ken na ch sedeya yad kk 3 MINIMUM SYS YEM REQUIREMENTS serekek eee axek ek e e keke keka keka kk Ka KA KAKA KAK KA KA HAA 3 ADAPTER POWER REQUIREMENTS sure eee keke keke ee kn keke ke ka kaka KA KA KA HARE KA HE KA HE A HAA HA 3 INSTALLATION semita lae kK Haa PANEL NOKE RO D Se REK NN ae ARA a ENA HAKI E de EVANA VIE Ken NNN 3 USB to T2C Software sisiesc cies cl kake k b l xir si d P w k UR p k W w kU QA e H YAW a HESTA Hu ek eV we EW a Hu a 3 USB to I2C Hardware connection to computer USB port u ekere kek k k 3 HARDWARE DESCRIPTION s 5nx i4545 455525551 xin D YE tia ee 4 SP POL ach dawns A bed cae E KA W nda rese d da ERA a ed re MY dun Seren AGA K dek 5 PC MPU cscosscascchdodasida lessees sonics soho slantbonsaueledsndseb ona bben 5 HP O E sien cst oven ca TE A re GeO eb asbencens eee dseioieciohi gee 5 USB TO I2C HARDWARE TO TARGET CONNECTION ceecceescceceseeseseeeeteeeeees 7 Minimum hardware connection between USB to I2C and User Hardware 7 Typical hardware connection between USB to 12C and User Hardware 7 USING USB TO I2C TO POWER USER s SYSTEM ee eee ek kek kek kek k KAKA 7 FIRMWARE UPDATES e2. check for updates whenever your PC has an internet connection This feature can be found under the Options menu USB to I2C updates can also be downloaded manually from the following website http www i2ctools com updates html Check our website periodically for update announcements and information Technical Support for USB to I2C is available via an email to support i2ctools com If you have problems with the software installation ensure that you have Admin Privileges If the installer application doesn t launch when the CD ROM is inserted then manually browse the CD ROM and find the Setup exe file in the root directory of the CD Double click on the Setup exe file to start the installation process The Adapter has 3 3k _pull up resistors connected to the I2C bus lines Ensure that additional pull up resistors in the connected target system do not bring the pull up resistance below 1 6k for 5V systems or 1 1K _ for 3 3V systems The on board pull up resistors can be removed from the system by removing the pull up resistor jumpers RPU see Hardware Description above USB to I2C monitors the communications on the IC bus for proper operation of connected peripherals any errors on the bus are detected and reported by the software Bus communication is stopped if errors are detected and can be resumed when the hardware problem is corrected and the transmission retried Keep the original USB to I2C installation CD ROM in the ev
3. 2C Installation and User s Guide USB to I2C application USB to SPI application C and SPI DLL and examples OG OG Proper use of USB to I2C is the sole responsibility of the user SB Solutions Inc is not responsible for any damage resulting from misuse or improper installation SB Solutions Inc will at our option repair or replace a defective USB to I2C hardware within thirty 30 days of the purchase date Return shipping is the responsibility of the user Assumptions We are assuming the user of this product has experience with the I C Bus protocol The 12C Bus specification is a good source of detailed information about the I C Bus The complete specification can be downloaded from the NXP Semiconductors website Static Handling Precautions The USB to I2C hardware contains CMOS devices that can be damaged by ESD It is recommended to use a ground strap or touching the PC case or other grounded source before unpacking or handling the USB to I2C hardware PC Pentium 60 processor or equivalent 8 MB RAM and 16 MB of hard drive space One USB port either 2 0 or 1 1 compatible 32 bit or 64 bit versions of XP Vista Windows 7 and Windows 8 CD ROM Drive for installation note that we recommend using the latest installation package available for download from our website http www 12ctools com downloads html A SN The USB to I2C hardware obtains its power from the computer s USB port It should not be po
4. CL and GND to your target system Details can be found in the section titled USB to I2C Hardware To Target Connection of this document SCL is the serial clock generated by the USB to I2C hardware Clock stretching is supported SDA is the bidirectional I C data pin Supply a voltage at VP for the pull up resistors or remove the jumpers at RPU before using the I2C port It is advisable to remove the jumpers when connecting the USB to I2C hardware to a target system assuming the target already has pull up resistors This will allow you to use the USB to I2C hardware at the voltage of your target system The I C pins may be used as open drain IO pins controlled by the DLL if not used for 12C functionality GPIO the USB to I2C hardware has one general purpose input and one general purpose input IN pin operates as an input with the following characteristics INPUT PORT CHARACTERISTICS Vil low level input voltage 0 3 VDD 0 99V Vih high level input voltage 0 7 VDD 2 31V Note that the microcontroller is a 3 3V device but this input is 5V tolerant The OUT pin has the following characteristics OUTPUT PORT CHARACTERISTICS Von 2 9V min 4 mA Voi 0 4V max 3 2mA 3 3V Switched Output provides the user with the ability to power a low power target system at 3 3V The USB to I2C software has the ability to switch this output on and off The total current provided by the USB to I2C Hardware to the targ
5. GND 6 Blue MOSI 7 Violet SDA 8 Gray GND 9 White IN 10 Black SCLK 11 Brown OUT 12 Red 3 3V 13 Orange 5V 14 Yellow VCC is the 3 3V power for the USB to I2C hardware This supply is active whenever the hardware is plugged into a USB port It is provided here to supply the pull up resistors It can also be used to power a user s target hardware VP supplies the power to the IC pull up resistors see RPU Note that the UPULL UP nr USB to I2C hardware by default has the MISO jumpers connected at RPU and it is up MOSI to the user to ensure that a voltage GND source is connected to the VP pin A SCLK pull up voltage up to 5 5V maximum 3 3U_0UT i 9 Y_OUT may be applied to the VP pin If pull up J1 resistors are not required please remove the two jumpers at connector RPU It is not be necessary to apply a voltage at VP if the RPU jumper are not installed SPI Port the SPI signals are connected to the target system from this port Note that these signals drive a 3 3V output To communicate with a SPI slave you require four signals and GND SSN Slave Select also known as CS or Chip Select MISO Master In Slave Out is connected to the SPI slave output MOSI Master Out Slave In is connected to the SPI slave input SCLK Serial Clock outputs the clock to the slave device The SPI pins may be used as IO pins controlled by the DLL if not used for SPI functionality I C Port connect these two pins SDA and S
6. USB to I2C Hardware User s Manual http www i2ctools com Information provided in this document is solely for use with the USB to I2C product from SB Solutions Inc SB Solutions Inc reserves the right to make changes or improvements to this document at any time without notice SB Solutions Inc assumes no liability whatsoever in the sale or use of this product including infringement of any patent or copyright Reasonable efforts have been made to ensure the accuracy of the information presented However SB Solutions Inc assumes no responsibility for the accuracy of the information No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of SB Solutions Inc P O Box 4506 Cary NC 27519 4506 Microsoft and Windows are registered trademarks of Microsoft Corporation Other brand names are trademarks or registered trademarks of their respective owners Copyright 2004 2013 SB Solutions Inc All rights reserved Table of Contents INTRODUCTION s 54 5530445454255005545540i 2e io epee soup a D N H NE ee 1 USB TO Z2C KITCONTEN TTS 5 4 3 4 515254445543 4 42k5 25a d k ka bi uc r i GENS E SEKAN E K NA SER N 1 DISCLAIMER AND WARRANTY sisciissscscessstaved eee xakeke keke ek keke keke ke kak KAKA KARA HAH KAKE KA Hu HA HARA HA 2 GETTING S TAR ELD ssni ieena 4455505 E Era EN EES Kek
7. eed to connect the SCL SDA GND and 3 3V or the VCC pin to your target system The pull up resistors may be left in the circuit or they may be removed by removing the jumpers at RPU If using the on board pull up resistors you should connect an appropriate voltage to VP VCC or 3 3V or 5V USB to l2C sce useR HARDWARE E ZER HARDWARE USB to I2C Hardware used to power a user application Important note the total current consumed by the USB to 12C hardware and the target system must be limited to 100mA by the user when using the power outputs The USB to I2C hardware uses about 60mA so the target system can consume a maximum of 40mA The firmware in the USB to I2C hardware can be updated by the user No special software is required for the update The firmware can be updated by using the following procedure 1 Disconnect the USB to I2C hardware from the USB port It should also be disconnected from any user target hardware 2 Place a jumper across the bottom two pins of jumper JFU see figure in the Hardware Description section of this document 3 Plug the USB to I2C hardware into the computer s USB port 4 The USB to I2C hardware will be displayed as a mass storage device in Windows as shown below VE N L an x D gt Computer I2CTOOLS 0 E Search I2CTOOLS D Organize v Share with Burn ae Name Date modified B Desktop ip Downloads S Recent Places Type a fi
8. ent the software needs to be re installed Future USB to I2C updates from our Website may require a previous installation from the original media If you get a Timeout message when using the software make sure that there is a pull up connected to the SDA and SCL pins The Timeout occurs when either or both of the I2C pins are held low for more than 0 5 seconds If pull ups are connected remove the connection to the target system Reset the hardware by removing the USB cable and reinserting it Make sure that all three jumpers are connected then try 11 sending an I2C message If you still get a Timeout then microcontroller has probably been damaged The unit will need to be returned for repair If all else fails email a description of the problem you are having to us at Support liZetools com Note that all technical support requests must begin with an email to this email address 12
9. et system should not exceed 40mA It is the user s responsibility to ensure that excessive current is not drawn from this supply pin 5V Switched Output provides the user with the ability to power a low power target system at 5V The USB to I2C software has the ability to switch this output on and off The total current provided by the USB to I2C Hardware to the target system should not exceed 40mA It is the user s responsibility to ensure that excessive current is not drawn from this supply pin Jumper RPU allows the user to connect 3 3Kohm pull up resistors which are connected between the I C pins SDA and SCL and the VP pull up voltage The jumpers should be removed when connecting the USB to I2C hardware to a target system if pull up resistors are already available on the target system 14 pin Ribbon Cable The USB to I2C hardware is shipped with a 14 pin ribbon cable with a 2x7 pin connector The connector has a 0 1 2 54mm spacing The pin configuratio n of the connector when 14 pin viewed from _ connector above is VCC VP shown here SSN SCL MISO GND MOSI SDA GND IN When connecting the USB to I2C Hardware to an I C target system a cable with a minimum of three 3 wires will be required The SDA SCL and GND on the USB to I2C Hardware must be connected to their corresponding signals on the target The USB to I2C Hardware has 3 3K _ ull up resistors connected to pin VP on t
10. he 14 pin header If the VP is not connected you must remove the jumpers at RPU If the jumpers are left in the circuit ensure that VP has a voltage source applied and note that the total 1 C sink current of 3mA is not exceeded when the target pull ups and USB to I2C pull ups are taken into consideration The SDA and SCL lines may be pulled up to a voltage range between 3 3V and 5 5V It may work at voltages down to 2 5V however the noise margins will be lower USB to 2c SDA UsER HARDWARE 6ND HARDWARE Minimum hardware connection between USB to I2C and User Hardware Jumpers at RPU removed USB to I2C USER HARDWARE spa k _ HARDWARE Typical hardware connection between USB to I2C and User Hardware Internal pull up resistors jumpers at RPU When connecting the USB to I2C Hardware to the user s hardware the target system can be self powered or it may be powered from the VCC 3 3V or 5V connectors on the USB to I2C hardware The 3 3V and 5V power outputs can be turned on and off using the USB to I2C software or DLL To turn on the power select the appropriate item under the Options menu A check 7 mark will be shown in the menu beside an enabled power output The status bar at the bottom of the USB to I2C software will also indicate if a power output is enabled Note that the 3 3V and 5V power outputs are disabled upon hardware reset To use the USB to I2C hardware in a 3 3V environment you will n
11. neinio oaeee kekan na WO Wl den bal de k kek n KER EERE E S nS 8 SOFTWARE UPDATES 55543 5545554xo5y5 k2 v4na w da pawan kp bek a t ane bg an k n 090 EE dn Ok QEDR TERASS 11 TECHNICAL SUPPOR 3 55 25554434 Xiaa n di ek Hu RAS KI M SERRE ROER tanta une EA e EKA NA d k eee 11 TROUBLESHOOTING ss ees dace E Ebe yanda Y Na KE em a y na ed eens 11 iii The USB to I2C Hardware connects to a standard USB port found on most IBM compatible PCs and provides bi directional communication with I C devices using the I C protocol The Hardware is powered directly from the PC s USB port The LED located beside the USB connector illuminates after it has successfully been enumerated by the USB host The USB to I2C software runs on Windows 98SE ME 2000 XP Vista and is compatible with any PC hardware having a minimum of a Pentium processor and an USB port The software allows the user to select a memory device EEPROM FRAM or SRAM from a menu and also provides several Universal modes to allow communication with most I C devices The USB to I2C software is designed to operate only with the included USB to I2C hardware USB to I2C Hardware USB to I2C software installation CD ROM optional which loads the following files Software license agreement USB to I2C user Registration Form USB to I2C Software User s Manual USB to I2C Hardware User s Manual USB to I
12. rmware bin 1 11 2008 1 49 PM BIN File Libraries JE Computer Local Disk C 2CTOOLS D 1 item 5 Select the firmware bin file and delete it You will be asked if you would like to delete the file Choose Yes Are you sure you want to permanently delete this file a firmware bin aN Type BIN File Size 8 00 KB Date modified 1 11 2008 1 49 PM 6 Place the new firmware update into the folder Organize v B Open v Burn New folder Name Date modified Type Favorites Bil Desktop 2 USBI2C_Pro bin 12 30 2010 5 14 PM BIN File j Downloads S Recent Places Libraries jE Computer amp Local Disk C a PCTOOLS D USBI2C_Pro bin Date modified 12 30 2010 5 14 PM Date created 1 2 2011 5 21 PM BIN File Size 7 25 KB 7 Disconnect the USB to I2C hardware from the USB port 8 Remove the jumper from JFU You can now use the USB to I2C hardware with updated firmware You can check to see which firmware revision is loaded by clicking on About in the Help menu in the USB to I2C software usSB to I2C PC Made Simple Software Version 5 2 0 5 Firmware Revision 3 1 Orders http i2ctools com Email sales i2ctools com Technical support support i2ctools com Product Updates http www i2ctools com loads html Orders 919 342 6514 Copyright SB Solutions Inc 2004 2010 10 The USB to I2C software has a built in update feature which allows you to
13. wered by an external power source USB to IZC Software e You must have Administrator privileges to install the software e Insert the USB to I2C installation CD ROM into the appropriate drive e The installation software should automatically start e Ifthe installation software does not start automatically double click on the Setup exe file on the CD ROM e Complete and send in the registration form via email USB to IZC Hardware connection to computer USB port e Neutralize any ESD static charge by touching the bare metal on the rear of your computer before removing the USB to I2C Hardware from the packaging e Connect the USB to I2C Hardware to a USB Port using a standard USB cable 3 e The LED beside the USB port should illuminate USB PORT RPU PULL UP RESISTORS fPY USB to I2C Pro WeYuuy 12ctools com V3 1 14 PIN RIBBON CABLE The figure above shows the items on the hardware which you should become familiar with Her e are the details USB Port this is where you plug the usb cable into the board USB LINK LED the LED should be illuminated when the cable has been connected between the PC and the USB to I2C hardware and the software has been installed correctly J2 Header Header J1 contains the connections to a user target application A 14 pin ribbon cable is included with the following definitions Signal Pin Ribbon cable color wire VCC 1 Brown VP 2 Red SSN 3 Orange SCL 4 Yellow MISO 5 Green
Download Pdf Manuals
Related Search