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R2025S 参数 Datasheet PDF下载

R2025S图片预览
型号: R2025S
PDF下载: 下载PDF文件 查看货源
内容描述: 高精度I2C总线实时时钟模块 [High precision I2C-Bus Real-Time Clock Module]
分类和应用: 时钟
文件页数/大小: 47 页 / 563 K
品牌: RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
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R2025S/D  
error as follows:  
(1) Output a 1Hz clock pulse of Pulse Mode with interrupt pin  
Set (0,0,x,x,0,0,1,1) to Control Register 1 at address Eh.  
(2) After setting the oscillation adjustment register, 1Hz clock period changes every 20seconds ( or every 60  
seconds) like next page figure.  
1Hz clock pulse  
T0  
T0  
T0  
T1  
19 times  
1 time  
Measure the interval of T0 and T1 with frequency counter. A frequency counter with 7 or more digits is  
recommended for the measurement.  
(3) Calculate the typical period from T0 and T1  
T = (19×T0+1×T1)/20  
Calculate the time error from T.  
30  
 复制成功!