R EM MICROELECTRONIC-MARIN SA V3020 Ultra Low Power 1-Bit 32 kHz RTC Features n n n n n n n n n n n n n n n n Supply current typically 390 nA at 3 V 50 ns access time with 50 pF load capacitance Fully operational from 1.
2 V to 5.
5 V No busy states or danger of a clock update while accessing Serial communication on one line of a standard parallel data bus or over a conventional 3 wire serial interface Interface compatible with both Intel and Motorola Seconds, minutes, hours, day of month, month, year, week day and week number in BCD format Leap year and week number correction Time set lock mode to prevent unauthorized setting of the current time or date Oscillator stability 0.
3 ppm / volt ...

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