DS3231 I2C RTC Module

(Dimensions: 38mm (length) * 22mm (W) * 14mm (HWeight: 8GWorking voltage :3.3 – 5 .5 VClock chip: high-precision clock chip DS3231Clock accuracy the range :0-40 ℃, accuracy 2ppm, the error was about 1 minuteWith two calendar alarmProgrammable square-wave outputReal-time clock generation seconds, minutes, hours, day, date, month and year timing, and provide valid until the year 2100 leap year compensation℃Internal chip temperature sensor comes with an accuracy of ± 3(memory chips: AT24C32 (storage capacity of 32KM(IIC bus interface, the maximum transmission speed 400KHz (working voltage of 5VIIC other devices can be cascaded, 24C32 address can be modified by short-circuiting A0/A1/A2, the default address is 0x57With rechargeable battery LIR2032, to ensure that the system is powered down, the clock of any course of normal walkingPackage: single anti-static packaging:(Wiring instructions (with Arduino uno r3 for exampleSCL → A5SDA → A45V→ VCCGND→ GND:Related Linkhttp://www.l8ter.com/?p=417