DS3231 AT24C32 IIC Module Precision RTC Module

Chip DS3231SN Operating voltage: 3.3-5.5V Clock accuracy: 0-40 ℃ range, accuracy of 2ppm, annual error of about 1 minute With 2 calendar alarms Programmable square wave output Real-time clock generates seconds, minutes, hours, days of the week, date, month and year timing, and provides valid until 2100 leap year compensation Chip with internal temperature sensor, accuracy of ± 3 ° C Memory chip: AT24C32 (memory capacity 32K) IIC bus interface, the highest transmission speed of 400KHz (operating voltage of 5V) Can be cascaded with other IIC devices, 24C32 address can be modified by short-circuiting A0/A1/A2, the default address of 0x57