The ePL6802 integrates proximity and ambient light sensors with both I2C and Interrupt Pin outputs. It is used in notebook PCs, smartphones, MIDs (mobile internet devices), PNDs (portable navigation devices), e-books, tablet PCs, flat-panel televisions, and other mobile devices to offer a more comfortable visual experience and longer battery life. Ambient light sensor (ALS) optimizes the screen brightness to save battery power. Proximity sensor (PS) turns off the LCD screen when the device is held close to your ear, placed inside the pocket, purse, bags, or the like. Proximity sensor can also work as a device wake-up sensor by sensing the user waving the hand in front of the device.