The new C8051T62x/T32x USB families are designed to reduce cost, simplify design and shorten development time. These products are based on a crystal-less operation capability that enables the USB module to operate in low and full speeds without the need for an expensive high precision external crystal, thereby lowering BOM cost. They also integrate high-performance analog functions such as high-precision ADCs and high speed comparators which are five times faster than competitive USB products. This enables customers to implement sophisticated data acquisition systems or take high precision measurements. In addition, Silicon Labs high-speed, pipelined 8051-compatible MCU core enables customers to accomplish more work in less time. This reduces power consumption by allowing the system to stay in low power modes for longer periods of time. OTP (one time programmable) versions are also available for cost-sensitive applications (C8051T62x/32x). Production ready-software drivers, step-by-step application notes, code examples, and easy-to-learn development tools accelerate time-to-market. These are available at www.silabs.com/USB. These product families are pin and code compatible with legacy products enabling an easy migration path while simultaneously giving customers some new and enhanced features. The C8051T32x OTP device is pin and code compatible with the flash-based C8051F32x enabling a cost reduction path.