【通信应用笔记】音频M41T00AUD实时时钟的理解和运用

【通信应用笔记】音频M41T00AUD实时时钟的理解和运用
AN2583
Application note
Understanding and applying the
M41T00AUD real-time clock with audio

Introduction
Drawing on the fact that the squarewave generator built in to many ST serial RTCs can be
used as a tone generator, users have been employing ST real-time clocks in printer-fax
scanner units for several years. In these applications, the squarewave output is used to
create the audible beeps these all-in-one (AIO) machines make when a key is pressed or an
error occurs.
The