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This is a Super Capacitor Real-Time Clock module, it design for Raspberry Pi, but it also can be used to Arduino. Pluging it into Raspberry Pi GPIO interface, and all is ok. This is the easiest way to keep it in time.
Features:
- -40 ° C to + 85 ° C temperature range, timing accuracy is maintained at ± 5ppm (± 0.432 seconds / day)
- Continuous Timekeeping Battery Backup
- Low power consumption
- The device package, and functionally compatible with the DS3231
- The complete clock calendar functions include seconds, minutes, hours, day, date, month and year time, and provide valid until 2100 Leap Year Compensation
- The two-day alarms
- 1Hz and 32.768kHz output
- The reset output and input buttons to shake
- High-speed (400kHz) I2C serial bus
- + 2.3V to + 5.5V supply voltage
- The accuracy of ± 3 ° C Digital Temperature Sensor
- -40 ° C to + 85 ° C operating temperature range
- 16 Pin SO (300mil) package
- Underwriters Laboratories (UL) certification
