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參數(shù)資料
| 型號： | M41T82RMY6E |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-18 |
| 文件頁數(shù)： | 26/58頁 |
| 文件大小： | 462K |
| 代理商： | M41T82RMY6E |
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Clock operation
M41T82 M41T83
The on-chip capacitance can be calculated as follows:
For example:
●
CLOAD (12h = x0000000) = 12.5 pF,
●
CLOAD (12h =11001000) = 3.5 pF, and
●
CLOAD (12h = 00100111) = 17.4 pF.
The oscillator sees a minimum of 3.5 pF with no programmable load capacitance selected.
Note:
These are typical values, and the total load capacitance seen by the crystal will include
approximately 1-2 pF of package and board capacitance in addition to the Analog
Calibration register value.
Any invalid value of Analog Calibration will result in the default capacitance of 25 pF.
The combination of analog and digital trimming can give up to –93 to +156 ppm of the total
adjustment.
Figure 18 on page 33 represents a typical curve of clock ppm adjustment versus the Analog
Calibration value. This curve may vary with different crystals, so it is good practice to
evaluate the crystal to be used with an M41T8x device before establishing the adjustment
values for the application in question.
C
LOAD
1
2
--- AC6 AC0 value
–
decimal
,
() 0.25pF
×
[] 25pF
+
=
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| M41T82ZQA6E | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T82RQA6F | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T82RMY6F | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| M41T82SQA6F | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T83RM6F | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
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| M41T82RMY6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T82RQ6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T82RQ6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T82RQA6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial I2C bus RTC with battery switchover |
| M41T82RQA6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial I2C bus RTC with battery switchover |
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