參數(shù)資料
型號(hào)： M41T82SQA6F
廠商： STMICROELECTRONICS
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, QCC16
封裝： 4 X 4 MM, ROHS COMPLIANT, QFN-16
文件頁(yè)數(shù)： 26/58頁(yè)
文件大小： 462K
代理商： M41T82SQA6F
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
+
=
相關(guān)PDF資料
PDF描述
M41T83RM6F 1 TIMER(S), REAL TIME CLOCK, PDSO8
M41T83ZM6E 1 TIMER(S), REAL TIME CLOCK, PDSO8
M41T83ZQA6E 1 TIMER(S), REAL TIME CLOCK, QCC16
M41T83RMY6E 1 TIMER(S), REAL TIME CLOCK, PDSO18
M41T83ZQA6F 1 TIMER(S), REAL TIME CLOCK, QCC16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M41T82ZM6E 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
M41T82ZM6F 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線(xiàn)接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
M41T82ZMY6E 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Serial RTC with battery switchover
M41T82ZMY6F 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Serial RTC with battery switchover
M41T82ZQ6E 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Serial RTC with battery switchover
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