Cyclone® 10 LP FPGA – AN 493: I2C Battery Gauge Interface Design Example - A battery gauge is a device that continuously monitors the state of a battery's capacity and displays it to the user in a simple form. Often in embedded systems, the status of the battery supply is monitored remotely. Communication between the embedded system and battery gauge can be facilitated through an industry-standard two-wire I2C bus and an interfacing device. Because of its low overhead, the two-wire communication link minimizes the number of traces required on the PCB to monitor the power source. An Cyclone® 10 LP FPGA can easily serve as the interfacing device. The I2C interface allows the Cyclone® 10 LP FPGA to access readings from the battery gauge remotely. An I2C serial interface consists of a data line (SDA) and a clock line (SCL). Both the lines are bidirectional and are pulled up to the VCC of the system. This bus is also a common bus for any other I2C-compliant device in the system. - 2017-06-29

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17.0.0