INTO THE GUTS OF USB DRIVERS

摘要

When it comes to replacing a legacy RS-232 interface with USB, we've done it with a Silicon Laboratories CP2102 USB-to-UART bridge controller. We've also done it with their CP2103. We've even done it with an FTDI FT232R USB UART IC. Well, now it's time to do it again. This time, with a Microchip PIC18F14K50 USB Flash microcontroller.