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Renesas MCU as we know Renesas makes microcontrollers (mcu) that provide expand ability while allowing customers to make full use of existing resources.
Some of the popular microcontrollers (mcu) made by Renesas are:
RL78 is the family name for a range of 16-bit microcontrollers.
The RX MCU family
The RX, an acronym for Renesas Xtreme, is the family name for a range of 32-bit microcontrollers developed by Renesas.
The RA, an acronym for Renesas Advanced, is the family name for a range of 32-bit microcontrollers with Arm Cortex processor cores.
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
Read lessHello, I’m presently working on a RA2L1 custom board and using the E2 emulator lite for debugging by e2 studio. I want to flash the device. still, I’m not finding any clear methodology documented for the same. It would be ...Read more
Hello,
I’m presently working on a RA2L1 custom board and using the E2 emulator lite for debugging by e2 studio. I want to flash the device. still, I’m not finding any clear methodology documented for the same. It would be helpful if the following points are clarified.
1. Do I’ve to use the Renesas flash programmer for flashing or it can be done through e2 studio?
2. Do I need to alter include anything in the code (tested fine in debug mode) specifically for flashing purpose?
3. Does the code need to be copied from flash to RAM in runtime for better performance? If yes, how do I insure that?
A step-wise guide application note on this topic would be of great help.
Regards,
Read less
Hello, Thanks for sharing your question with Volt Engineering Community! Please take a look at Code written for downloading and debugging with E2 will most likely just hang when run without a debugger attached. 1. RFP is an option, or any development environment such as e2 studio or 3rd party toolsRead more
Hello,
Thanks for sharing your question with Volt Engineering Community!
Please take a look at Code written for downloading and debugging with E2 will most likely just hang when run without a debugger attached.
1. RFP is an option, or any development environment such as e2 studio or 3rd party tools can program the flash of the device.
2. No special accommodations in the application code are necessary to enable flashing the device. Most designs will incorporate a custom charge-loader that uses a particular interface (UART, CAN, etc.) with a proprietary comm protocol, but this isn’t needed if the serial programming mode of the device can be set and a tool used that supports factory programming protocol.
3. Renesas devices are optimized to execute code from the flash. Some designs that use comparatively slow flash technology can profit from RAM execution but that isn’t the case for RA devices.
Kind Regards,
Vikas Nagpal
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.
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,
Hello, How reliable is the data flash (using FSP VEE module) in case of interrupting power supply during write/erase operation?
Hello,
How reliable is the data flash (using FSP VEE module) in case of interrupting power supply during write/erase operation?
Read less
Hi, However, it seems that if 2 consecutive power interrupts during write operations occur, the data aren't copied again after the second power interrupt, If I understand your concern right. So the VEEPROM has no valid data in this case. I hope it helps. Thank You
Hi,
However, it seems that if 2 consecutive power interrupts during write operations occur, the data aren’t copied again after the second power interrupt, If I understand your concern right. So the VEEPROM has no valid data in this case.
I hope it helps.
Thank You
See lessHello, 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
Read lessHi, 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,
See lessHello, 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.
Read lessHi, 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.
Dear Volt.Tech, I’ve been trying to run the IIC master example code with the EK- RA6M3 board but it doesn’t make with the latest FSP version(4.0.0). To workaround this I installed v3.8.0 but I’m facing issues with the IDE where it doesn’t enter the function which has a multi-byte i2c read sequence. I’m using the MAX86161 detector to test this out. Thanks & Regards
Dear Volt.Tech,
I’ve been trying to run the IIC master example code with the EK- RA6M3 board but it doesn’t make with the latest FSP version(4.0.0). To workaround this I installed v3.8.0 but I’m facing issues with the IDE where it doesn’t enter the function which has a multi-byte i2c read sequence. I’m using the MAX86161 detector to test this out.
Thanks & Regards
Read lessHi, Thanks for reaching out to Engineering Community. Could you please check your e² studio version? Please note that FSP versions of 3.7.0 and later require a minimal e² studio version of 2022- 04 and FSP versions of 4.0.0 and later require a minimum e² studio version of 2022- 07. Best regards,
Hi,
Thanks for reaching out to Engineering Community.
Could you please check your e² studio version? Please note that FSP versions of 3.7.0 and later require a minimal e² studio version of 2022- 04 and FSP versions of 4.0.0 and later require a minimum e² studio version of 2022- 07.
Best regards,
See lessHello, I’m using the RA6M3 regulator in one of the applications where I need 2 UARTS. uart0 and uart1. In the configurator, I’ve configured uart0 for 115200 buad and uart1 for 9600 buad ( as that’s what I need to communicate ...Read more
Hello,
I’m using the RA6M3 regulator in one of the applications where I need 2 UARTS. uart0 and uart1. In the configurator, I’ve configured uart0 for 115200 buad and uart1 for 9600 buad ( as that’s what I need to communicate to my peripherals). But ever these 2 different baud rates don’t work together. Seems I can configure both at 115200 or both at 9600 and also both would work( I tried checking it on teraterm).
Is there any way to configure 2 different devices uart0 and uart1 to different baud rates? Any suggestion in this direction would help me.
Thanks for reaching out to Engineering Community. Could you try setting each baud rate with R_SCI_UART_BaudSet() function? Please make sure you call it after you have opened the SCI_UART channel and before you start any data transmission. Let us know if it helped. Regards,
Thanks for reaching out to Engineering Community.
Could you try setting each baud rate with R_SCI_UART_BaudSet() function? Please make sure you call it after you have opened the SCI_UART channel and before you start any data transmission.
Let us know if it helped.
Regards,
See less
Hi, I am curious about what kind of the internal flash of RA6T2 is? Is it NOR flash or NAND flash? According to the program and erase size, it seems to be NOR flash? still, what’s the physical interface of the flash? ...Read more
Hi,
I am curious about what kind of the internal flash of RA6T2 is? Is it NOR flash or NAND flash?
According to the program and erase size, it seems to be NOR flash?
still, what’s the physical interface of the flash? Does it use the SPI or other?
If it was NOR flash.Thanks
RA6T2 uses the Renesas proprietary Metal Oxide Nitride Oxide Semiconductor( MONOS) flash technology, it's neither NOR nor NAND. You can search the general web or the Renesas web pages and find information about this. The interface is a direct register grounded via the flash application command interRead more
RA6T2 uses the Renesas proprietary Metal Oxide Nitride Oxide Semiconductor( MONOS) flash technology, it’s neither NOR nor NAND. You can search the general web or the Renesas web pages and find information about this.
The interface is a direct register grounded via the flash application command interface( FACI). From the RA6T2 hardware U/ M
The FCU( flash control unit) controls the programming and erasure of the flash memory. The FACI( flash application command interface) controls the FCU according to the specified FACI commands.
Hi, I search for a small example for SPI Master and DMA transfer. So that I can receive e.g. 15 bytes with DMA and get a transfer end to intrude/ message when it’s finished. Thanks in advance!
Hi,
I search for a small example for SPI Master and DMA transfer.
So that I can receive e.g. 15 bytes with DMA and get a transfer end to intrude/ message when it’s finished.
Thanks in advance!
Read lessFSP4.0 supports DTC and DMAC transfer interface in the driver Add ther_spi driver to your design Add the DMAC transfer driver to the stack
FSP4.0 supports DTC and DMAC transfer interface in the driver
Add ther_spi driver to your design
Add the DMAC transfer driver to the stack
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
See less