The Grove – RTC is based on the Serial Real-Time Clock chip DS1307 which supports I2C. It uses a Lithium cell battery (CR1225). The clock/calendar provides seconds minutes hours day date month and year information. The number of days is automatically adjusted for all months including for leap years. The clock operates in either the 24-hour or 12-hour format with AM/PM Indicator. The chip has a built-in power sense circuit that detects power failures and automatically switches from primary supply to the battery supply.
Note: Battery is not included.
Key Features
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Grove compatible interface
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RTC counts seconds minutes hours date of the month month day of the week and year with Leap-Year compensation valid up to 2100
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I2C serial interface
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Programmable Square-Wave output signal
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Automatic Power-Fail detection and switching circuit
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Consumes less than 500nA in Battery-backup Mode with Oscillator Running
For all Grove users (especially beginners) we provide you guidance PDF documents. Please download and read throughPreface - Getting StartedandIntroduction to Grovebefore your using of the product.
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