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Home/ra mcu

volt.tech Latest Questions

vikas Nagpal
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vikas Nagpal
Asked: January 11, 2023In: Microcontroller

How RA2A1 24 Bit Single end input measure negative signal?

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Hello, I am thinking to use RA2A1 MCU to measure a very small AC (50Hz) signal, perhaps millivolt range or lower, but it’s sin wave that has negative amplitude, is RA2A1 MCU single-end input can handle negative signal? Thank You

Hello,

I am thinking to use RA2A1 MCU to measure a very small AC (50Hz) signal, perhaps millivolt range or lower, but it’s sin wave that has negative amplitude, is RA2A1 MCU single-end input can handle negative signal?

Thank You

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mcumicrocontrollerra mcura2a1renesasRenesas Microcontrollersignal
  1. Alex thomas
    Added an answer on January 18, 2023 at 11:50 am

    Hi, You can find the input voltage range in differential input mode in Table 33.7: Thank You

    Hi,

    You can find the input voltage range in differential input mode in Table 33.7:

    Thank You

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  • 1 Answer
Answer
Anonymous
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Anonymous
Asked: November 9, 2022In: Microcontroller

Why USB PCDC Stack Shows an Error?

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Hello, I am working on the USB. I added the” USB PCDC” stack. But there’s an error” Requires USB clock to be 48 MHz”. How can I fix it?Please see attached screenshot. Thanks.

Hello,
I am working on the USB. I added the” USB PCDC” stack. But there’s an error” Requires USB clock to be 48 MHz”. How can I fix it?

Please see attached screenshot.
Thanks.

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mcupcdcra mcurenesasRenesas Microcontrolleruartusb
  1. nidhi singh
    Added an answer on November 14, 2022 at 10:17 am

    Hello, You need to go to the" Clocks" tab of the FSP configurator and enable the UCLK clock. also, adjust your PLL Mul and UCLK Div to reach the UCLK frequency of 48 MHz. Kind regards,

    Hello,

    You need to go to the” Clocks” tab of the FSP configurator and enable the UCLK clock. also, adjust your PLL Mul and UCLK Div to reach the UCLK frequency of 48 MHz.


    Kind regards,

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  • 1 Answer
Answer
Alex thomas
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Alex thomas
Asked: November 2, 2022In: Microcontroller

R7FA2L1 UART Recieve Data?

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Hello, I am experimenting with UART, I’m transferring data every 1 second in my application. When I connect the Rx and Tx pins there’s no trouble.But when I cut the pin attachments. The data I send comes back to me ...Read more

Hello,

I am experimenting with UART, I’m transferring data every 1 second in my application. When I connect the Rx and Tx pins there’s no trouble.
But when I cut the pin attachments. The data I send comes back to me in the form of an interruption. How can I fix this situation? What’s the reason for this situation?

Thanks

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mcumicrocontrollerr7fa2l1ra mcurenesasRenesas Microcontrolleruart
  1. ashishgawade
    Added an answer on November 4, 2022 at 10:29 am

    Hi, Thanks for reaching out to Volt.Tech Engineering Community. The UART- related interrupts can be seen below and call the defined callback function if it's defined. If you do not want a break in you can disable it by configuring SCR( Serial Control Register) properly. Else, you can close UART withRead more

    Hi,

    Thanks for reaching out to Volt.Tech Engineering Community.
    The UART- related interrupts can be seen below and call the defined callback function if it’s defined.

    If you do not want a break in you can disable it by configuring SCR( Serial Control Register) properly. Else, you can close UART withR_SCI_UART_Close() when no physical connection is established between the pins and open it again when there’s a connection.
    Let us know if you solved your issue.

    Regards,

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Answer
vikas Nagpal
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vikas Nagpal
Asked: October 31, 2022In: Microcontroller

How to Save Data After Power Off with RA6T1?

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Hello, guys. I’m working with the RA6T1 chip, and now my application needs to save some data to flash when powered off and read it when power on. For now, 8k bytes is enough, so I want to use one code flash ...Read more

Hello, guys.

I’m working with the RA6T1 chip, and now my application needs to save some data to flash when powered off and read it when power on.

For now, 8k bytes is enough, so I want to use one code flash block to do it.

But I’m worried about the time because perhaps erasing code flash and programming one block takes 50 – 60ms, now I use LVD to check power voltage, and will erase and program flash when power force drop-down 2.99 V, my question is what voltage is the power drop to, the chip will stop work(erase and program flash), I didn’t get this information according to the manual. Thanks a lot.

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datamcumicrocontrollerra mcura6t1renesasRenesas Microcontroller
  1. nidhi singh
    Added an answer on November 2, 2022 at 9:59 am

    Hi, Thanks for reaching out to Volt.Tech Engineering Community. As stated in 41.15.5 of the flash section, the operating voltage range (VCC2.7 to3.6 V for RA6T1) should be within the allowed range. Let us know if it helps.

    Hi,

    Thanks for reaching out to Volt.Tech Engineering Community.
    As stated in 41.15.5 of the flash section, the operating voltage range (VCC2.7 to3.6 V for RA6T1) should be within the allowed range.


    Let us know if it helps.

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  • 2 Answers
Answer
Anonymous
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Anonymous
Asked: July 25, 2022In: Microcontroller

Differnce between “Simple SPI” and “Standalone SPI”?

  • 0

I have noticed that e2studio uses the term “simple SPI” for the SCI peripherals.  I am setting up a new board where I need two SPI connections for my RA4M3 board.  One to some motor drivers and one to non-QSPI ...Read more

I have noticed that e2studio uses the term “simple SPI” for the SCI peripherals.  I am setting up a new board where I need two SPI connections for my RA4M3 board.  One to some motor drivers and one to non-QSPI external flash.  I will use the one “standalone SPI” that is available, and then one of the SCI peripherals.

Are there any constraints I need to worry about?

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non-Qspi external flashra mcura4m3SCI peripheralsspi
  1. pallavi sharma
    Added an answer on July 29, 2022 at 4:33 pm

    The "simple SPI" mode of the SCI is significantly different than the SPI peripheral. For example the simple-SPI is limited to only 8-databits while the standalone-SPI supports many different bit lengths.  If your needs are met by what the simple-SPI supports there is no reason to avoid to using it.

    The “simple SPI” mode of the SCI is significantly different than the SPI peripheral.

    For example the simple-SPI is limited to only 8-databits while the standalone-SPI supports many different bit lengths.  If your needs are met by what the simple-SPI supports there is no reason to avoid to using it.

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Anonymous
  • 0
Anonymous
Asked: July 1, 2022In: Microcontroller

Unable to debug Renesas RA6M4 using E2 Lite

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While trying to debug Renesas RA6M4 MCU using E2 Lite through SWD , but it is showing error Break at address “0x4bda” with no debug information available, or outside of program code. How to solve this issue?

While trying to debug Renesas RA6M4 MCU using E2 Lite through SWD , but it is showing error Break at address “0x4bda” with no debug information available, or outside of program code. How to solve this issue?

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0x4bdae2 litera mcura6m4renesasRenesas MicrocontrollerRenesas RA6M4 MCUswd
  1. Shivali Singh
    Added an answer on July 27, 2022 at 6:15 pm

    Hi, Please check your below pin / connection is ok. 1. SWCLK 2. SWDIO 3. 3.3V 4. GND 5. RESET need pulled up and give small filter capacitor. 6. MD, need this pin as pullup.   Please check this above pins and let me know if you have face any issues. Thanks & Regards Shivali Singh  

    Hi,

    Please check your below pin / connection is ok.

    1. SWCLK

    2. SWDIO

    3. 3.3V

    4. GND

    5. RESET need pulled up and give small filter capacitor.

    6. MD, need this pin as pullup.

     

    Please check this above pins and let me know if you have face any issues.

    Thanks & Regards

    Shivali Singh

     

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  • 1 Answer
Answer
techfreak
  • 0
techfreak
Asked: June 24, 2022In: Microcontroller

Binary compression solution in the FSP

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Is there any binary compression solutions in the FSP? Something like BZ2, LZ4, LZMA, Z standard, Heatshrink or CRLE compression?

Is there any binary compression solutions in the FSP? Something like BZ2, LZ4, LZMA, Z standard, Heatshrink or CRLE compression?

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bz2fspheatshrinkra mcuzstandard
  1. pallavi sharma
    Added an answer on July 29, 2022 at 5:21 pm

    No - there are not compression APIs included with the FSP.  There are many open source compression libraries that you can add to your FSP project.

    No – there are not compression APIs included with the FSP.  There are many open source compression libraries that you can add to your FSP project.

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  • 1 Answer
Answer
Anonymous
  • 0
Anonymous
Asked: June 14, 2022In: Microcontroller

Language change in Smart Configurator project from C to C++

  • 0

We started a software project in C , using RA Smart Configurator. Now we want to move to C++. How can we change an existing Smart Configurator Project from C to C++?

We started a software project in C , using RA Smart Configurator. Now we want to move to C++.

How can we change an existing Smart Configurator Project from C to C++?

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cc++ra mcurenesasSmart Configurator
  1. dev krishnan
    Added an answer on July 13, 2022 at 4:56 pm

    I am not sure if this is possible with smart configurator but with the latest Eclipse CDT, it is possible to add/remove the nature of the project. Then you can convert to C++. Try searching about using eclipse to convert C projects to C++ project. 

    I am not sure if this is possible with smart configurator but with the latest Eclipse CDT, it is possible to add/remove the nature of the project. Then you can convert to C++. Try searching about using eclipse to convert C projects to C++ project. 

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  • 1 Answer
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