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ashishgawade
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ashishgawade
Asked: December 22, 2022In:
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Dear Volt Team, We’ve some questions related to the product/ manufacturing of custom boards using RA4M2 MCU. 1. Is multiple boards flashing at a time supported? If yes, please share the documents for the tools and configuration. 2. How do we handle the ...Read more

Dear Volt Team,

We’ve some questions related to the product/ manufacturing of custom boards using RA4M2 MCU.

1. Is multiple boards flashing at a time supported? If yes, please share the documents for the tools and configuration.

2. How do we handle the MD pin in case of multiple board flashing, without manual intervention?

Regards & Thanks,

AG

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boardflashingmcupinra4m2renesas
  1. vikas Nagpal

    Hello Ashish, Thanks for sharing your question with Volt.Tech Engineering Community! Yes, you can program multiple devices with Renesas Flash Programmer. For Renesas Flash Programmer's latest performances from V3.05.00 or later you can create a single design and specify the serial number of each emuRead more

    Hello Ashish,

    Thanks for sharing your question with Volt.Tech Engineering Community!
    Yes, you can program multiple devices with Renesas Flash Programmer. For Renesas Flash Programmer’s latest performances from V3.05.00 or later you can create a single design and specify the serial number of each emulator( E1 emulator/ E2/ E2 Lite) in the tool option when starting RFP via command.

    You can find all the necessary tools, manuals, and documents.
    https//www.renesas.com/us/en/software-tool/renesas-flash-programmer-programming-gui#overview

    As far as it concerns the MD pin then’s the suggested connection from the RA4M2 hardware manual for JTAG, SWD, and Serial Programming


    Generally, this pin should be high in debug mode and low when programming the device( flashing).
    Then there’s a different manual for e2 programmers.

    https//www.renesas.com/document/man/e2-emulator-e2-emulator-lite-additional-document-users-manual-notes-connection-ra-devices-0
    And let us know!

    Kind Regards,
    Vikas Nagpal

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nidhi singh
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nidhi singh
Asked: December 7, 2022In:
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Hi, I was looking at a schematic that uses the STMPS2161, and the FAULT pin is pulled up to VIN (open drain), still, it isn’t being read. Is it necessary to pull up this pin if it’ll not used or ...Read more

Hi, I was looking at a schematic that uses the STMPS2161, and the FAULT pin is pulled up to VIN (open drain), still, it isn’t being read. Is it necessary to pull up this pin if it’ll not used or can it be left floating?

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managementpinpowerstmps2161
  1. ashishgawade

    Welcome, to the community! The FAULT pin of the STMPS2161 is only used to signal an error. However, you can simply leave it open and unconnected, If you don't query it anyway and therefore do without this signaling. Does it answer your question? Regards Ashish

    Welcome, to the community!

    The FAULT pin of the STMPS2161 is only used to signal an error. However, you can simply leave it open and unconnected, If you don’t query it anyway and therefore do without this signaling.
    Does it answer your question?

    Regards

    Ashish

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Alex thomas
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Alex thomas
Asked: October 15, 2022In:
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Hello everyone, When using the XCOUT pin as normal input, and also power on, the pin is always low position and it’s set to pull up externally. why? Can anyone tell me? ( By the way, XCIN is ok).

Hello everyone,

When using the XCOUT pin as normal input, and also power on, the pin is always low position and it’s set to pull up externally. why? Can anyone tell me? ( By the way, XCIN is ok).

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mcumicrocontrollerpinra2l1renesasxcout
  1. vikas Nagpal

    Hi, You should add the Clock Generation Circuit stack in the Stacks tab of RA Smart Configurator and configure the pins as follows. Also, the pins are configured as XCIN and XCOUT. Let us know if you have further issues. Regards

    Hi,

    You should add the Clock Generation Circuit stack in the Stacks tab of RA Smart Configurator and configure the pins as follows.
    Also, the pins are configured as XCIN and XCOUT.

    Let us know if you have further issues.
    Regards

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Alex thomas
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Alex thomas
Asked: October 4, 2022In:
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I’ve read quite a bit about needing a resistor when powering a 5 mm LED from an esp32 GPIO pin, still, other experts say that if a LED is powered right, it will not need a resistor at all will ...Read more

I’ve read quite a bit about needing a resistor when powering a 5 mm LED from an esp32 GPIO pin, still, other experts say that if a LED is powered right, it will not need a resistor at all will not burn out.

1. Is it as easy as purchasing a LED that’s powered properly for an esp32 GPIO pin so that it will not probably burn out in a reasonable amount of time( years)?
2. Still, what’s the current on each GPIO pin? ( I know that the voltage on each GPIO pin is 3, If so.3 V)
3. Rather than adding a resistor, I can add a second LED parallel to add resistance and meet the power requirements, right?

Thanks!

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esp32gpioledspin
  1. nidhi singh

    The maximum power per pin is 40mA. You shouldn't push more than 150 mA through all your output pins( and probably less than that to avoid overheating). You can find the correct resistor value using any led resistor calculator online and the datasheet for your led. I do not see how parallel resistorsRead more

    The maximum power per pin is 40mA. You shouldn’t push more than 150 mA through all your output pins( and probably less than that to avoid overheating). You can find the correct resistor value using any led resistor calculator online and the datasheet for your led. I do not see how parallel resistors will be useful if you’re powering directly through the pin, and you do not have to get the exact resistance calculated. However, you should have a transistor gating a separate power supply for the light, If you need more than milliamps.

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