A Versatile Timing Microsystem Based on Wafer-Level Packaged XTAL/BAW Resonators With Sub-µW RTC Mode and Programmable HF Clocks.
David RuffieuxNicola ScolariFrédéric GiroudThanh-Chau LeSilvio Dalla PiazzaFelix StaubKai ZoschkeCharles Alix ManierHermann OppermannTommi SuniJames DekkerGiorgio AllegatoPublished in: IEEE J. Solid State Circuits (2014)