EFM8SB1_DEMO

    There is not a lot of information about EFM8 on the Internet. I will be a porter and create a minimal version of the system.

    About the microcontroller : As we all know, the EFM8SB1 microcontroller is a low-power 8-bit microcontroller from Xinke, with single-cycle instructions and a maximum clock of 24.5Mhz; iic, spi, uart are all available... Worth mentioning It has a 13-channel capacitive touch detection function, which can easily realize touch buttons, touch sliders and other functions. In addition, the official studio software comes with a touch library, which is very convenient for configuration and debugging. By the way, I mentioned low power consumption at the beginning, how low can it be? Deep sleep 50nA, 150uA/MHz Well, it’s really awesome.

   About the circuit board : Let’s talk about this minimal system again. In order to test the performance of the microcontroller in terms of low power consumption, the author added an additional diode step-down power supply circuit (gated through a DIP switch), combined with the sampling resistor and LM358 op amp, so that Developers can either use a multimeter to measure the voltage of the sampling resistor to convert the precise power consumption of the microcontroller, or they can roughly judge the working mode of the microcontroller through three LEDs.

     Finally: The author's energy is limited, so if I make any mistakes, I would like to ask fellow Taoists to correct me.