Epson Toyocom is claiming the smallest real-time clock chip fashioned by combining a quartz microelectromechanical system resonator with an ASIC. The chip was wire-bonded in the same 3.4-by-1.7-by-1-mm package. The RX-4571BD model uses a three-wire serial interface; the RX-8571BD uses NXP Semiconductor's I2C bus interface.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=212400221
Audio: http://homepage.mac.com/guitarmedia/interviews/rcjQMEMS-08-12-10.mp3
