I2C DS3231 AT24C32 Real Time Clock Module

The DS3231 I2C precision clock module is suitable for projects that need accurate timekeeping capabilities. Typical applications include clocks and data logging devices. 

• Can be connected directly to the micro controller IO ports
• Standard 2.54 mm pins for input and output connections
• Two calendars and alarm clock
• Two programmable square-wave outputs
• Real time clock generator for seconds, minutes, hours, day, date, month, and year timing
• Valid until 2100 with leap year compensation
• Can be cascaded with other I2C devices
• The address can be set using the pins A0/A1/A2 (the default address is 0x57)
• Battery socket compatible with LIR2032 batteries
• I2C interface
• Operating voltage: 3.3 V to 5.5 V
• Real-time clock chip: DS3231
• Clock accuracy: 2 ppm
• Memory chip: AT24C32 (32 Kb storage capacity)
• On-chip temperature sensor with an accuracy of +/-3 degrees
• I2C bus interface maximum speed: 400 kHz

• DS3231 Datasheet
• AT24C32 Datasheet
• AT24C32 Example Code