M48T37Y Datasheet, PDF (19/29 Pages) STMicroelectronics – 3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM

Figure 11. Crystal Accuracy Across Temperature
M48T37Y, M48T37V
Frequency (ppm)
20
0
–20
–40
–60
–80
–100
–120
–140
–160
–40 –30 –20 –10 0
∆F
F
= -0.038
ppm
C²
(T - T₀)² ± 10%
T₀ = 25 °C
10 20 30 40 50 60 70 80
Temperature °C
AI00999
Figure 12. Clock Calibration
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
AI00594B
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