R2025S/D High precision I2C-Bus Real-Time Clock Module
the CPU by two signal lines, SCL and SDA, and configured to perform serial transmission of time and calendar data to the CPU. The oscillation frequency is adjusted to high precision (0±5ppm: 13sec. per month at 25°C) The periodic interrupt circuit is configured to generate interrupt signals with six selectable interrupts ranging from 0.5 seconds to 1 month. The 2 alarm interrupt circuits generate interrupt signals at preset times. As the oscillation circuit is driven under constant voltage, fluctuation of the oscillator frequency due to supply voltage is small, and the time keeping
current is small (TYP. 0.48µA at 3V). The oscillation halt sensing circuit can be used to judge the validity of internal
data in such events as power-on; The supply voltage monitoring circuit is configured to record a drop in supply voltage below two selectable supply voltage monitoring threshold settings. The 32-kHz clock output function (CMOS output) is intended to output sub-clock pulses for the external microcomputer. The oscillation adjustment circuit is intended to adjust time by correcting deviations in the oscillation frequency of the crystal oscillator.
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R2025S 、 R2025D 、 R2025D-E2-F 、 R2025a-bb-c |
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Datasheet |
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Lead Free |
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Please see the document for details |
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SOP14;SON22 |
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English Chinese Chinese and English Japanese |
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2018/05/19 |
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EA-225-160706 |
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1.9 MB |
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