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Serial programming with target voltage between 1.7V to 3.3V

benjamin.joa

Hi,

Is possible to program the nRF52832 with a target voltage between 1.7V to 3.3V? I'm thinking to power supply the MCU with a pair of AA batteries in series.

Thanks for your response.

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  • +1

    You shouldn't run at 1.7v. The high end of the brownout reset is 1.7v.  Normally people consider the bottom end to be 1.8v. Not sure why the spec calls out 1.7 under recommended.

    Of course you can program from 1.8 to 3.3. You just have to make sure whatever you are talking to is compatible. You can't have a 1.8v device talking to a 3.3v device.  A lot of stuff goes wrong when you try that.

    So, 1.8v has to talk to 1.8v. Same for 3.3v.

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  • +1

    You shouldn't run at 1.7v. The high end of the brownout reset is 1.7v.  Normally people consider the bottom end to be 1.8v. Not sure why the spec calls out 1.7 under recommended.

    Of course you can program from 1.8 to 3.3. You just have to make sure whatever you are talking to is compatible. You can't have a 1.8v device talking to a 3.3v device.  A lot of stuff goes wrong when you try that.

    So, 1.8v has to talk to 1.8v. Same for 3.3v.

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