- Size: 38mm (length) * 22mm (W) * 14mm (height)
- Operating voltage :3.3 – 5 .5 V
- Clock chip: high-precision clock chip DS3231
- Clock Accuracy :0-40 Degree 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 Degree
- 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
- SCL ? A5
- SDA ? A4
- VCC ? 5V
- GND ? GND
- 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, disconnects the main power supply and maintains accurate timekeeping.
- Integrated oscillator improves long-term accuracy of the device and reduces the number of components of the production line.