3-WIRE SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION RV5C339A
(Serial Clock), and SIO (Serial Input/Output), and configured to perform serial transmission of time and calendar data to the CPU. This model incorporates different functional circuits. 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 circuits generate interrupt signals at preset times. The oscillation circuit is driven under constant voltage so that
fluctuations in oscillation frequency due to voltage are small and supply current is also small (TYP. 0.35µA at 3
volts). The oscillation halt sensing circuit can be used to judge the validity of internal data in such events as poweron.
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 (Nch. open drain) is intended to output sub-clock pulses for the external microcomputer. The oscillation adjustment circuit is intended to adjust time counts with high precision by correcting deviations in the oscillation frequency of the crystal oscillator. This model comes in an ultra-compact 10-pin SSOP-G (with a height of 1.20mm and a pin pitch of 0.5mm).
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3-WIRE SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION |
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[ Communication devices (multi function phone, portable phone, PHS or pager) ][ OA devices (fax, portable fax) ][ Computer (desk-top and mobile PC, portable word-processor, PDA, electric note or video game) ][ AV components (portable audio unit, video camera,camera, digital camera or remote controller) ][ Home appliances (rice cooker, electric oven) ][ Other (car navigation system, multi-function watch) ] |
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Datasheet |
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Please see the document for details |
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10-pin SSOP-G |
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English Chinese Chinese and English Japanese |
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2018/05/19 |
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EA-055-160701 |
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1.2 MB |
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