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M41T81M6F 参数 Datasheet PDF下载

M41T81M6F图片预览
型号: M41T81M6F
PDF下载: 下载PDF文件 查看货源
内容描述: 报警串行访问实时时钟 [Serial access Real-Time Clock with alarm]
分类和应用: 时钟
文件页数/大小: 30 页 / 303 K
品牌: STMICROELECTRONICS [ ST ]
 浏览型号M41T81M6F的Datasheet PDF文件第12页浏览型号M41T81M6F的Datasheet PDF文件第13页浏览型号M41T81M6F的Datasheet PDF文件第14页浏览型号M41T81M6F的Datasheet PDF文件第15页浏览型号M41T81M6F的Datasheet PDF文件第17页浏览型号M41T81M6F的Datasheet PDF文件第18页浏览型号M41T81M6F的Datasheet PDF文件第19页浏览型号M41T81M6F的Datasheet PDF文件第20页  
Clock operation  
M41T81  
The IRQ/FT/OUT/SQW pin is an open drain output which requires a pull-up resistor to V  
CC  
for proper operation. A 500-10k resistor is recommended in order to control the rise time.  
The FT Bit is cleared on power-down.  
Figure 10. Crystal accuracy across temperature  
Frequency (ppm)  
20  
0
–20  
–40  
–60  
2
F  
F
= K x (T – TO)  
–80  
–100  
–120  
–140  
–160  
= –0.036 ppm/°C2 0.006 ppm/°C2  
O = 25°C 5°C  
K
T
–40  
–30  
–20  
–10  
0
10  
20  
30  
40  
50  
60  
70  
80  
Temperature °C  
AI07888  
Figure 11. Clock calibration  
NORMAL  
POSITIVE  
CALIBRATION  
NEGATIVE  
CALIBRATION  
AI00594B  
16/30  
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