User's Manual

720 Hardware User Guide

Figure 2-7 Push switch controlling

Figure 2-8 MCU controlling

If the module is powered on but the power-on sequence has not been completed, the states of

each pin are uncertain. The power-on sequence of the module is shown in Figure 2-9.

Figure 2-9 N720 power-on/off sequence

If your application does not require ON/OFF control, you can pull the PWRKEY pin down to GND

through 1.5K resistor. Then the module can start automatically after it is powered on. If you do