Below is the Frequently Asked Questions List for IO Wizard
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1. tENESAS Below is the Frequently Asked Questions List for IO Wizard FAQ 001 30 11 2006 Function Part number Pin Package Question For M16C Tiny series I could not find my target MCU part number in the MCU list Answer On IO Wizard the peripheral settings display for each MCU group are designed based on higher pin package device Corresponding to the peripheral settings supported on IO Wizard only higher pin package MCU devices are listed for user selection For M16C tiny series 1 M16C 26A group 48 pin package device part number is listed for selection 42 pin package device part number are not available for selection ii M16C 28 and 29 group 80 pin package device part number are listed for selection 64 pin package device part number are not available for selection FAQ 002 30 11 2006 Function Timer operation with external clock Question For timer peripheral settings the IO Wizard did not support timer calculation when external clock is selected as count source frequency for timer mode operation Why Answer In order to run the timer calculation a known timer count source frequency value is required Calculation cannot be carried out for external clock because it is an unknown frequency to IO Wizard engine FAQ 003 30 11 2006 Function UART asynchronous serial I O mode with external clock Question For UART asynchronous serial I O mode the IO Wizard did not allow me to select external clock for2. 2 and manually set PCLKO and PCLK1 bit by themselves FAQ 013 30 11 2006 Function Version number Question How to check the version number of IO Wizard software Answer On IO Wizard main window system setting window do a right click on IO Wizard title and then select About IO Wizard to view IO Wizard version number FAQ 014 30 11 2006 Function PLL clock Question For M16C tiny series MCU why the peripheral frequency value used doesn t tally with my clock frequency and PLL multiplication factor selection Example For M16C 26A I selected 16MHz clock and PLL multiplying factor of 2 in main window but the frequency displayed on bottom bar of peripheral window is 20MHz Answer When PLL is used according to combination of user selection clock frequency and PLL multiplying factor there is possibility that the calculated frequency falls to invalid range When such situation happen IO Wizard will automatically set to use the maximum PLL clock frequency Refer to above example For M16C 26A PLL clock frequency spec is 1OMHz to 20MHz When calculated frequency is 16MHz x 2 which is 32MHz invalid IO Wizard will automatically set to use 20MHz 4 7 tENESAS FAQ 015 05 03 2007 Function Part number Question For R8C 22 23 group devices I could not find my target MCU part number in the MCU list Answer For R8C 22 23 groups the MCU settings on IO Wizard are designed based on J version devices T
3. IO Wizard Question Can IO Wizard insert source codes into multiple HEW workspaces at one go Answer IO Wizard is designed to insert source code into the current active HEW workspace As such please ensure that only 1 copy of HEW is opened when IO Wizard is to be used 6 7 tENESAS FAQ 021 02 04 2008 Function Invoke HEW from IO Wizard Question I have followed the instructions in the User Manual regarding the setup for invoking HEW from IO Wizard However I am still getting error message Answer IO Wizard needs to be closed and reopened if you have made any changes to the environment settings If you are using this new function for the first time restarting IO Wizard will solve the problem 717
4. baud rate generator Why Answer IO Wizard does not allow external clock source selection for UART asynchronous serial T O mode due to following reason For UART IO Wizard would like to illustrate the correct setting of bit rate register as according to baud rate In order to run the baud rate calculation a known count source frequency value is required Calculation cannot be carried out for external clock because it is an unknown frequency to IO Wizard engine FAQ 004 30 11 2006 Function Entering wait mode or stop mode for low power consumption tENESAS Question On IO Wizard there isn t any available setting for entering to wait mode or stop mode Why Answer The output files of IO Wizard are meant for illustration of source code program sample and also the peripheral initialization setting In MCU application entering to wait mode or stop mode won t be done at beginning of program Therefore IO Wizard does not support setting for wait mode or stop mode Scenario for wait mode and stop mode Upon MCU reset the program will do necessary system machine initialization and set up after the program has carried out some process and came to a state whereby MCU is idling then it is times to save power consumption by entering into wait mode or stop mode FAQ 005 30 11 2006 Function Watchdog timer Question On IO Wizard there isn t any available setting for watchdog timer setting Why Answer Watchdog timer settin
5. er Yes all program lines displayed in Status window will be generated on the output c file However the order of program lines shown in status window and program lines generated in the output c file might not be the same 3 7 tENESAS FAQ 012 30 11 2006 Function M16C 26A M16C 28 M16C 29 Incorrect operation on timers or serial I O for f1 and f2 clock select Question When I tested the timers or serial I O on actual system the operation is incorrect The problems happened only for f1 and f2 clock select Target MCU M16C 26A M16C 28 M16C 29 Answer For M16C tiny series MCU a single PCLKO bit is used to select f1 or f2 clock for few peripherals Example M16C 26A PCLKO control clock select for timers A B and dead timer as a whole M16C 28 and M16C 29 PCLKO control clock select for timer A B S dead timer S T O 3 S I O 4 and multi master I2C bus as a whole Also PCLK1 bit is used to select f1 or f2 clock for UARTO to UART2 as a whole The IO Wizard engine does not do consistency check on fl and f2 clock select for inter related peripherals with respect to PCLKO bit and PCLK1 bit Scenario On IO Wizard user can select f1 for timer 1 f2 for timer 2 In this case there is conflict on PCLKO setting User is advised to read and follow the advice comment stated in the config c file under the title area of each peripheral setting Take into the consideration of whole system operation user should decide choice of f1 or f
6. etting on IO Wizard although the MCU data sheets stated it is available for my target MCU Answer Present IO Wizard does not support CRC function FAQ 009 30 11 2006 Function Port register setting Question After I have set the port direction to output I would like to do port level setting But I could not find available setting on IO Wizard Answer IO Wizard only support port direction selection for initialization setting After the output source files are generated user can manually add in the port level setting line in the main function or after port direction setting line in init function FAQ 0010 30 11 2006 Function Port direction for external interrupt pins timer pins serial and other communication protocol pins ADC pins Question Does IO Wizard auto set the port direction of external interrupt pins timer pins serial and other communication protocol pins ADC pins as according to peripheral operation mode Answer No IO Wizard does not do consistency check for user s port direction setting with peripheral operation mode setting In another words IO Wizard will not auto change the port direction User is advised to read and follow the advice comment stated in the config c file under the title area of each peripheral settings FAQ 011 30 11 2006 Function Program lines Question Will those program lines displayed in Status window during peripheral settings be generated into the output c file Answ
7. export the generated source codes into HEW 5 7 tENESAS Answer The prerequisite for the exporting to work is that HEW and HEW Target Server COM has already been installed on your machine If HEW is already installed on your machine please verify it is version 4 2 or above FAQ 018 07 03 2008 Function Invoke HEW from IO Wizard Question Why is it that I cannot export the generated source codes into HEW even when HEW is opened Answer You might have open HEW without opening any workspace Please open an existing workspace and try again FAQ 019 07 03 2008 Function Invoke HEW from IO Wizard Question How to register HEW target server Answer 3 setup steps must be done before we can invoke HEW from IO Wizard 1 Check that Hew 4 02 00 and above has been installed Registering HewTargetServer exe in your Registry In windows explorer navigate to the latest copy of Hew and double click on REGISTERSERVER bat e g C Program Files Renesas HEW 3 Registering EcxHewTargetServer dll Launch HEW and in the Welcome dialog box click on the Administration button Under the Extension components folder you will see that EcxHewTargetServer dll is not registered Next click the Search disk button and choose Start Select HewTargetServer from the components listed and click the Register button After setup has been done launch IO Wizard and try to invoke HEW again FAQ 020 01 04 2008 Function Invoke HEW from
8. g is not supported on IO Wizard due to following 2 reasons i Watchdog timer is a function to detect when the program is out of control Watchdog should be included into the software at very last stage of software development that is after the system software is done and tested ii Major IO Wizard users are inexperienced in MCU software writing These users will have hard timer to debug the software if they turn on the watchdog and do not use it properly Remark The correct way to use watchdog timer is After the watchdog timer is started the program should include reset watchdog timer counter setting at different points of the program code so that watchdog timer counter can be regularly get reset during actual program execution FAQ 006 30 11 2006 Function Voltage detection circuit Question I could not find voltage detection setting on IO Wizard although the MCU data sheets stated it is available for my target MCU Answer Present IO Wizard does not support voltage detection circuit setting FAQ 007 30 11 2006 Function Oscillation stop detection function Question I could not find oscillation stop detection function on IO Wizard although the MCU data sheets stated it is available for my target MCU 2 7 tENESAS Answer Present IO Wizard does not support oscillation stop detection function FAQ 008 30 11 2006 Function CRC cyclic redundancy code Question I could not find CRC cyclic redundancy code s
9. herefore only J version device part number are listed for selection FAQ 016 07 03 2007 Function UART asynchronous serial I O mode transmitter and receiver Question For UART asynchronous serial I O mode how to set both receiver and transmitter to same UART channel Answer On IO Wizard user can only select either transmitter or receiver for UART operation In this way inexperience MCU user can have clearer information on the related settings for transmitter itself and just receiver itself If you want to have both receiver and transmitter for same UART channel you can manually integrate the program lines for UART transmitter and UART receiver into the same file FAQ 018 07 03 2007 Function Type Code Product Number for H8 SLP series Question For H8 SLP series I could not find my target MCU type code in the MCU list Answer On IO Wizard the peripheral settings display for H8 38347 group is designed based on product number Corresponding to the peripheral settings supported on IO Wizard only product number for MCU devices is listed for user selection For H8 SLP series 1 H8 38347 group Available product numbers are H8 38342 H8 38343 H8 38344 H8 38345 H8 38346 and H8 38347 11 H8 38347 group Each product number has options for Mask ROM versions F ZTAT versions Type Code Mark Code and Package Package Code FAQ 017 07 03 2008 Function Invoke HEW from IO Wizard Question Why is it that I cannot
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