The DS3231 Real Time Clock Module is a small electronic module used to keep accurate date and time in embedded systems and IoT projects, even when the main power is turned off.
RTC Chip:DS3231
Operating Voltage : 3.3V – 5.5V
Communication Protocol :I2C
Time Accuracy:±2ppm (about ±1 minute/year)
Backup Battery :CR2032 coin battery
Current Consumption :Very low power
Temperature Range :-40°C to +85°C
Time Format: 24-hour and 12-hour
Calendar Support :Day, Date, Month, Year
Leap Year Compensation :Yes
Built-in Sensor:Temperature sensor
I2C Address :0x68
EEPROM (on some modules):AT24C32 32KB EEPROM
Output Pins:SQW, 32KHz output
Features
High precision real-time clock
Battery backup support
Automatic leap year correction
Built-in temperature compensation
Can generate alarms and square wave signals
Advantages
More accurate than DS1307
Maintains time even during power failure
Easy interfacing with microcontrollers
Suitable for IoT and embedded systems