低频振荡器的使用注意事项Freescale Semiconductor AN2606 Rev. 1, 08/2005 Application Note Practical Considerations for Working With Low-Frequency Oscillators by: Meera Sridharan, Charles Melear 1 Introduction 1 Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Many devices use a 32768 Hz crystal; following are 2 Selecting External Circuit Components . . .……