V3025 EMMICRO [EM Microelectronic - MARIN SA], V3025 Datasheet - Page 5

• Manufacturer Part Number: V3025
• Description: 17Very Low Power 8-Bit 32 kHz RTC Module with Digital Trimming, User RAM and Battery Switch-over
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Module Characteristic
Typical V
Typical Battery Switch Resistance vs. Temperature
Copyright © 2004, EM Microelectronic-Marin SA
DD
Switch Resistance vs. Temperature
R
∆F/F
T
T
To determine the clock error (accuracy) at a given
temperature, add the frequency tolerance at 25°C to the
value obtained from the formula above.
∆
F
O
O
5
F
= -0.038
O
=
=
=
the ratio of the change in frequency to the
nominal value expressed in ppm (it can be
thought of as the frequency deviation at any
temperature)
the temperature of interest in °C
the turnover temperature (25 ± 5°C)
ppm
°
C
2
(T – T
O
)
2
± 10%
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V3025
Fig. 6
Fig. 7
Fig. 8