Timekeeper-NVRAM-&-Serial-RTC-ST-M41T00M6E-Real-time-clock-YY-MM-DD-date-format-HH-MM-SS-time-format-serial-I2C-interface-250ns-data-setup-time-100k Hz-clock-frequency-35ppm-frequency-precision-2V-to-5-5V-supply-voltage-40-to-85-C-8-SOIC-case-the-M41T00-is-a-low-power-serial-real-time-clock-with-a-built-in-32-768-k Hz-oscillator-8-bytes-of-the-RAM-are-used-for-the-clock-calendar-function-&-are-configured-in-BCD-format-supplied-in-tube-ST-M41T00M6E-S08-Real-Time-Clock-Y2K-I2