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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  
AC ELECTRICAL CHARACTERISTICS  
Unless otherwise specified: VSS=0V,Topt=-40 TO +85°C  
Input / Output condition: VIH=0.8xVDD,VIL=0.2xVDD,VOH=0.8xVDD,VOL=0.2xVDD,CL=50pF  
Symbol  
Item  
Condi-  
tion  
Unit  
VDD1.7V  
Min.  
1.3  
Typ.  
Max.  
400  
fSCL  
tLOW  
SCL Clock Frequency  
SCL Clock ”L” Time  
KHz  
µs  
tHIGH  
SCL Clock ”H” Time  
0.6  
0.6  
0.6  
0.6  
62  
µs  
µs  
µs  
µs  
tHD;STA  
tSU;STO  
tSU;STA  
tRCV  
Start Condition Hold Time  
Stop Condition Set Up Time  
Start Condition Set Up Time  
Ricovery Time from Stop  
Condition to Start Condition  
Data Set Up Time  
µs  
tSU;DAT  
tHD;DAT  
tPL;DAT  
200  
0
ns  
ns  
µs  
Data Hold Time  
SDA “L” Stable Time  
After Falling of SCL  
SDA off Stable Time  
After Falling of SCL  
Rising Time of SCL and  
SDA (input)  
Falling Time of SCL and  
SDA (input)  
Spike Width that can be  
removed with Input Filter  
0.9  
0.9  
300  
300  
50  
tPZ;DAT  
tR  
µs  
ns  
ns  
ns  
tF  
tSP  
S
Sr  
P
S
SCL  
tSP  
tLOW  
tHIGH  
tHD;STA  
SDA(IN)  
tHD;STA  
tSU;DAT  
tHD;DAT  
tSU;STO  
tRCV  
tSU;STA  
SDA(OUT)  
tPL;DAT  
tPZ;DAT  
Start Condition  
Stop Condition  
S
P
Repeated Start Condition  
Sr  
6
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