32.768K/2012/7PF/20PPM 32.768K+-20PPM 32.768K12.5 32.768K12.5P2/DT26 32.768K12.5P2/DT38 32.768K12.5PI/3215E 32.768K12.5PI/4115E 32.768K12.5PI/6914E 32.768K12.5PI/MC146 32.768K12.5PI/MC306