Extremely Accurate RTC Module ( On-board DS3231 I2C real-time clock chip, 24C32 32K I2C EEPROM memory)

Features

• Size: 38mm (length) * 22mm (W) * 14mm (height)
• Weight: 8g
• 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)
• Battery type: LIR2032 (not included )
• 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