When ST-Ericsson began development of the next-generation U8500 chip, they knew they would face design and implementation challenges. Not only did the U8500 have an aggressive schedule but it also had aggressive design parameters that it needed to achieve. The U8500 had to balance performance, power consumption, and cost, while delivering the complex and sophisticated technology required to support the intensive consumer demands of today’s communications market. The push-button functionality of Calibre SmartFill not only helped ST-Ericsson hit their time-to-market window, but also provided a correct-by-construction approach to control the design and manufacturing variability associated with fill.