Interface and communication protocol for a mobile device with a smart battery

A battery for providing supply power to a mobile communication device, the mobile communication device comprising:

• a main processor for controlling operation of the mobile communication device;
• and
• the battery configured to be coupled to the main processor, the battery comprising a battery processor for controlling operation of the battery and communicating with the main processor;
• and a battery module having one or more batteries for providing power;
• and
• a battery interface that is able to be coupled between the main processor and the battery processor for providing communication therebetween, wherein the battery interface comprises:
• a data communication line and protection circuitry comprising an RC network that protects the main processor from electrostatic discharge when the battery is coupled to the mobile communication device;
• and
• first and second tri-state buffers that are coupled between the RC network and the main processor and configured to receive enable/disable control signals to aid in resolving voltage compatibility issues between the main processor and the battery processor.

A mobile communication device comprising:

• a main processor for controlling operation of the mobile communication device;
• a smart battery coupled to the main processor for providing supply power to the mobile communication device, the smart battery comprising a battery processor for controlling operation of the smart battery and communicating with the main processor, and a battery module having one or more batteries for providing the supply power;
• and
• a battery interface coupled between the main processor and the battery processor for providing communication therebetween, wherein the battery interface comprises:
• a data communication line and RC network means for protecting the main processor from electrostatic discharge;
• and
• first and second tri-state buffers that are coupled between the RC network and the main processor and configured to receive enable/disable control signals to aid in resolving voltage compatibility issues between the main processor and the battery processor.

A battery for providing supply power to a mobile communication device, the mobile communication device comprising a main processor for controlling the operation of the mobile communication device, and the battery configured to be coupled to the main processor, the battery comprising:

• a battery processor for controlling operation of the battery and communicating with the main processor;
• a battery module having one or more batteries for providing power;
• and
• a battery interface that is able to be coupled between the main processor and the battery processor for providing communication therebetween, wherein the battery interface comprises a data communication line and RC network means for protecting the main processor from electrostatic discharge when the battery is coupled to the mobile communication device;
• and first and second tri-state buffers that are coupled between the RC network and the main processor and configured to receive enable/disable control signals to aid in resolving voltage compatibility issues between the main processor and the battery processor.