M41T81MY6 STMICROELECTRONICS [STMicroelectronics], M41T81MY6 Datasheet - Page 22
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M41T81MY6
Manufacturer Part Number
M41T81MY6
Description
Serial Access Real-Time Clock with Alarms
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M41T81MY6.pdf
(28 pages)
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M41T81
Figure 20. Crystal Accuracy Across Temperature
Figure 21. Clock Calibration
22/28
Frequency (ppm)
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
–100
–120
–140
–160
–20
–40
–60
–80
20
0
–40
–30
–20
–10
0
10
Temperature C
F
F = -0.038
20
T
30
0
ppm
= 25 C
C
2
(T - T
40
0
)
2
50
10%
60
70
80
AI00999
AI00594B