Mutual awakening system and method thereof between a handheld device and a wireless communication module

A mutual awakening system between a handheld device and a wireless communication module, applicable to the case that the wireless communication module is inserted into and electrically coupled to the handheld device, comprising:

• a handheld device storing a host interrupt routine and a host detector module, and the host interrupt routine for awakening the handheld device;
• a wireless communication module storing a communication interrupt routine and a communication detector module, and the communication interrupt routine for awakening the wireless communication module;
• a host control line, electrically coupled to the handheld device and the wireless communication module, and wherein the wireless communication module transmits a first voltage signal through the host control line;
• and
• a communication control line, electrically coupled to the handheld device and the wireless communication module, and wherein the handheld device transmits a second voltage signal through the communication control line;
• wherein, when the wireless communication module is placed in a sleep state and the communication detector module detects that the second voltage signal of the communication control line is in a high voltage state, the communication detector module actuates the communication interrupt routine to awaken the wireless communication module;
• and when the handheld device is placed in a sleep state and the host detector module detects that the first voltage signal of the host control line is in a high voltage state, the host detector module actuates the host interrupt routine to awaken the handheld device;
• wherein if the wireless communication module lowers the first voltage signal of the host control line, the host detector module detects that the first voltage signal of the host control line has dropped to a low voltage state, and suspends the host interrupt routine.