Cypress USB-UART LP Reference Design Kit Cypress Semiconductor USB-UART LP Reference Design Kit is an easy-to-use software configuration utility that can quickly change the parameters of the USB-UART LP Bridge Controller. The Reference Design Kit and its hardware documentation serve a reference design for applications such as USB-to-UART cables. Cypress' CY7C652xx USB-Serial Bridge Controllers and USB-UART LP Reference Design Kit are supported with drivers for Windows, Mac, Linux and Android operating systems.