I have a 5V MCU that needs to be connected to a 3.3V Bluetooth device through a UART (115kbps+). The Bluetooth device isn't 5V tolerant. Is there a good way to shift the 5V signal to a 3.3V signal? I need a solution that will be as small as possible though preferably still hand solderable (i.e no BGA or CSP packages). I need the 5V supply to sample 5V Accelerometers so I can't just run the MCU on 3.3V.
Also, is there any reason not to connect 3.3V outputs to 5V inputs? The high and low switching voltages will work together.
The MCU is a Cypress PSoC CY8C29 and the bluetooth module is a ConnectBlue OEMSPA13i.
Thanks
Also, is there any reason not to connect 3.3V outputs to 5V inputs? The high and low switching voltages will work together.
The MCU is a Cypress PSoC CY8C29 and the bluetooth module is a ConnectBlue OEMSPA13i.
Thanks