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Power supply NRF52

Hi,

I want to know that what should be the supply voltage to NRF52 IC. Another thing is that we want to connect our product with NRF52. Our product has TTL wires which has TX, RX, GND, RTS, CTS and power supply of 3.2 volts.

Can we connect our product to the UART pins of the NRF52 ? Please give us some recommendations about it.

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