USB5 Optical Mouse Design NotesDesigning a Low Cost USB-PS/2 Optical Mouse using the Cypress CY7C63723 USB Microcontroller and Agilent ADNS-2051Optical Sensor Introduction The Universal Serial Bus (USB) is an industry standard serial interface between a computer and peripherals such as a mouse, joystick, keyboard, UPS, etc. This application note describes how a cost-effective combination USB-PS/2 optical mouse can be built using the Cypress Semiconductor CY7C63723 USB microcontroller and the Agilent ADNS-2051 optical sensor. The document starts with the basic operations of a computer mouse peripheral followed by an introduction to the CY7C63723 USB microcontroller and the Agilent Technologies ADNS-2051 Optical Navigation Sensor. A schematic of the CY7C63723 USB microcontroller to the optics and buttons of a standard mou……