Hello guys, I am pretty new in designing and programming, and I am a little confused about my project.
I designed a "DIY Arduino2560" to improve performances of my board and use it as "standalone mode".
On the ATMEGA2560 I am only using those ports (apart from RX/TX and XTAL):
- SDA (PD1)
- SCL (PD0)
- Analog I/O : PE0 / PE1 / PE4 / PE5 / PE6 and PE7.
I read in the datasheet (page 83 to 87) that unconnected pins have to be connected to internal pull-up resistor to reduce power consumption.
I know that for using this "empty µC" I have to program the Arduino bootloader by using the example ArduinoISP from the IDE, but I don't know where and how to set up the pull-up resistor.
Is it in this bootloader program? If anyone can enlighten me