Methods and systems for detecting and for responding to connection of a battery to a logic device

A method of placing a logic device into a low power state in response to connection of a battery to the logic device, the method comprising:

• detecting connection of the battery to a battery pin of the logic device;
• detecting a voltage level of the battery;
• performing a test on the voltage level of the battery in response to the step of detecting connection of the battery to the battery pin of the logic device, wherein the logic device has a voltage supply pin and wherein performing the test on the voltage level of the battery comprises:
• comparing the supply voltage level of the voltage supply pin to a supply voltage threshold;
• and
• placing the logic device into a low power state in response to the step of performing a test on the voltage level of the battery.

A method of responding to connection of a battery to a logic device, the method comprising:

• detecting connection of the battery to a battery pin of the logic device, the logic device having a voltage supply pin;
• detecting a voltage level of the battery;
• and
• delaying activity of at least a portion of the logic device for a first time period based on a charging time of a capacitive element coupled to the voltage supply pin of the logic device and a stabilization time of a voltage detection module within the logic device.

A method of detecting a battery condition for a logic device having a battery pin, the method comprising:

• detecting connection of the battery to the battery pin of the logic device;
• detecting a voltage level of the battery;
• performing a first test based on the voltage level of the battery when the logic device is in an execution mode of operation, wherein the logic device has a voltage supply pin, and wherein performing the first test comprises comparing a voltage level from the voltage supply pin to a supply voltage threshold;
• and
• performing a second test based on the voltage level of the battery when the logic device is in a low power mode of operation.

A method of responding to connection of a battery to a logic device, the method comprising:

• detecting connection of the battery to a battery pin of the logic device;
• detecting a voltage level of the battery;
• and
• performing a test on the voltage level of the battery to detect a bounce condition on the battery pin of the logic device.

A system comprising:

• a logic device having a battery pin and a voltage supply pin;
• a battery detector responsive to the battery pin, the battery detector detecting connection of a battery to the battery pin of the logic device and comparing the voltage level of the battery to a battery threshold;
• a voltage detection module that compares a voltage received at the voltage supply pin to a supply voltage threshold;
• and
• control logic responsive to the battery detector, the control logic placing at least a portion of the logic device into a low power state.