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vikas Nagpal
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Asked: 2022-10-31T10:48:54+05:30 In:

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 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.

datamcumicrocontrollerra mcura6t1renesasRenesas Microcontroller
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    2 Answers

    1. Hi Mr. Vikas , Pls confirm on how much clock frequency you are running CPU depending on clock frequency dataflash memory erase time changes pls let us know clock fequency first  

      Hi Mr. Vikas ,

      Pls confirm on how much clock frequency you are running CPU

      depending on clock frequency dataflash memory erase time changes

      pls let us know clock fequency first

       

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    2. 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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