M41T82 datasheet(29/58 Pages) STMICROELECTRONICS

Part #	M41T82

Description	Serial RTC with battery switchover

PDF	58 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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M41T82 M41T83

Clock operation

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Table 6.

Digital calibration values

Calibration value (binary)

Calibration value rounded to the nearest ppm

DC4 – DC0

Negative calibration (DCS = 0) Positive calibration (DCS = 1)

0 (00000)

1 (00001)

-2

2 (00010)

-4

3 (00011)

-6

4 (00100)

-8

5 (00101)

-10

6 (00110)

-12

7 (00111)

-14

8 (01000)

-16

9 (01001)

-18

10 (01010)

-20

11 (01011)

-22

12 (01100)

-24

13 (01101)

-26

14 (01110)

-28

15 (01111)

-31

16 (10000)

-33

17 (10001)

-35

18 (10010)

-37

19 (10011)

-39

20 (10100)

-41

21 (10101)

-43

22 (10110)

-45

23 (10111)

-47

24 (11000)

-49

25 (11001)

-51

102

26 (11010)

-53

106

27 (11011)

-55

110

28 (11100)

-57

114

29 (11101)

-59

118

30 (11110)

-61

122

31 (11111)

-63

126

N/491520 (per minute)

N/245760 (per minute)

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