BU9873FVM数据手册集成电路（IC）的实时时钟规格书PDF

描述 Description

BU9873FVM是内置CPU中断功能的实时时钟。通过I²C接口进行通信，通过串行传输将时间、日历的各数据发送至CPU。内置数字式钟表误差补偿电路，可补偿与水晶振子的匹配不当导致的振荡频率误差，高精度调整时间。

特性 Features

•Connected to the CPU via I²C Interface
•Time (Hour･Minute･Second, Selectable 12-Hour and 24-Hour Mode Setting)
•Calendar (Year･Month･Day･Week)
•Periodic Interrupt Function (Output from INTRB, Ranging from 1 Second to 1 Month)
•Alarm Interrupt Function (Day-of-Week･Hour･Minute in Setting Format, Output from INTRB)
•Oscillation Halt Sensing Function
•32.768 kHz Clock Output (Output from 32KOUT with Control Pin)
•±30 Second Adjustment Function
•Automatic Leap Year Recognition up to the Year 2099
•Built-in Oscillation Stabilizing Capacitors (CG, CD)
•High-Precision Oscillation Adjustment Circuit