Electronic device capable of sharing a memory and method for operating an electronic device to share a memory

An electronic device, comprising:

• a first chip coupled to a memory, the first chip comprising a first master slave recognition pin coupled to a master voltage, a first access detection pin coupled to a first voltage, and a first interface pin coupled to the memory, wherein the first chip is configured to switch among an idle state, a detection state and an access state according to the voltage of the first master slave recognition pin and the voltage of the first access detection pin;
• and
• a second chip coupled to the memory, the second chip comprising a second master slave recognition pin, a second access detection pin coupled to the first access detection pin, and a second interface pin correspondingly coupled to the first interface pin and the memory, wherein the second chip is configured to switch among the idle state, the detection state and the access state according to the voltage of the second master slave recognition pin and the voltage of the second access detection pin;
• wherein:
• when the first chip is activated, the first chip enters the idle state;
• and
• when the first chip stays in the idle state for more than a predetermined idle time and the first access detection pin remains at the first voltage, the first chip enters the access state so as to access the memory via the first interface pin and fix a voltage of the first access detection pin at a second voltage;
• and
• the first voltage and the second voltage are different.