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I suggest you search and ask on https://devzone.nordicsemi.com/, and also study the datasheet. You can set the GPIO-pin voltage level to 1.8v instead of 3.3v, using the REGOUT0 setting in the UICR. The datasheet could be clearer on this. |
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Hello,
I'm currently designing a PCB with a MDBT50Q as the main MCU running micropython. I would like to connect a BNO055 sensor to it.
Datasheet for MDBT50Q: https://www.raytac.com/download/index.php?index_id=43
The MDBT50Q show on page 36 a Reg0 DC/DC Enabled setup where an internal buck converter steps down the voltage. This allows me to connect a 3.6V Lithium Ion directly to the PCB, however, when fully charged (4.2V) this will be too much for the BNO055 sensor which is rated at 2.4V-3.6V. So my thinking was to use VDD (default 1.8V) that is set using the REGOUT0, however, I have no idea how to do this.
Any advice or links would be appreciated.
Thanks in advance.
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