DS3231 Real Time Clock Module 3.3V/5V with Battery for Raspberry Pi

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Module itself can adapt to 3.3V and 5V system without level conversion, this is a super easy!

two. Characteristics:

• -40 [deg.] C to + 85 ° C temperature range, timing accuracy is maintained at ± 5ppm (± 0.432 s / day)
• Continuous Timekeeping Battery Backup
• Low power consumption
• The device package and function DS3231 is compatible with
• complete calendar clock 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
• reset output and buttons to input jitter
• 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 working temperature range
• 16 pin SO (300mil) package