DS1307 RTC Real Time Clock Module Tiny RTC I2C External Clock Module No Battery
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This tiny RTC module is based on the clock chip DS1307 which supports the I2C protocol. It uses a Lithium cell battery (CR1225). The clock/calendar provides seconds, minutes, hours, days, dates, months, and years information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.
1. Size: 38mm (length) * 22mm (W) * 14mm (height)
2. Weight: 8g
3. Operating voltage:3.3 – 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
6. Calendar alarm clock with two
7. Programmable square-wave output
8. Real-time clock generator seconds, minutes, hours, day, date, month, and year timing and provide valid until the year 2100 leap year compensation
9. Chip temperature sensor comes with an accuracy of ± 3
10. Memory chips: AT24C32 (storage capacity 32K)
11. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
12. Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
|Dimensions||3.8 × 1.2 × 1.4 cm|