Voltage Level togic UART

[pavan]

Hi All,

We are working with one of project where we are interfacing our nRF51822 with GPS module via UART . now the query is our GPS module works on 3.3V rx/tx logic but nrf51822 works on VDD(3.3)+0.3v input pin voltage so how to achieve the communication in such cases?

[RK]

what on earth do you mean by VDD + 0.3? Are you talking about the maximum voltage which can be applied? Since your GPS is 3.3v that's within the maximum so why do you think that's a problem?