DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
Features:
- Operating voltage :3.3 – 5 .5 V
- Clock chip: high-precision clock chip DS3231
- Clock Accuracy :0-40 ℃ range, the accuracy 2ppm, the error was about 1 minute
calendar alarm clock with two programmable square-wave output - Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
- Chip temperature sensor comes with an accuracy of ± 3 ℃
- Memory chips: AT24C32 (storage capacity 32K)
- IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
- Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
