High Accuracy I2C DS3231 RTC with AT24C32 32Kbit EEPROM

Description High Accuracy I2C DS3231 Real Time Clock Module with 32Kbit EEPROM and built-in 10 bit temperature sensor having resolution of 0.25C. The DS3231 is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SO package. Applications/Uses Global Positioning Systems (GPS) Servers Telematics Utility Power Meters Features DS3231 based RTC with 2032 Battery Holder Highly Accurate RTC Completely Manages All Timekeeping Functions Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year, with Leap-Year Compensation Valid Up to 2100 Digital Temp Sensor Output Register for Aging Trim Configureable I2C device Address for AT24C32 using SMD jumpers on pcb (A0,A1,A2) Two Time-of-Day Alarms Programmable Square-Wave Output Signal Battery-Backup Input for Continuous Timekeeping Low Power Operation Extends Battery-Backup Run Time 3.3V Operation Technical Specifications I2C interface : Fast (400kHz) I2C Interface EEPROM: AT24C32 32Kbit Serial I2C Digital Temp Sensor Output: 10 bit, ±3°C Accuracy and 0.25C resolution Time Format: HH:MM:SS (12/24 hr) Date Format: YY-MM-DD-dd Accuracy ±2ppm from 0°C to 40°C Accuracy ±3.5ppm from -40°C to 85°C 1Hz output pin SQW 32KHz output pin 32K Voltage – Supply Battery: 2.2 V ~ 5.5 V (for RTC) Operating Voltage: (VCC): 2.7V ~ 5.5V (including 24C32) Operating Temperature Ranges: Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) Battery Holder: 2032 Coin Battery Size: 38mm (length) * 22mm (W) * 14mm (height) Weight:8g (including Battery) Related Documents DS3231 RTC datasheet AT24C32 32K bit EEPROM datasheet Comparison between DS3231 vs DS1307 See here Arduino Library by MajicDesigns (modules are tested using this library at Art of Circuits) Arduino Library by Adafruit Package Includes 1x High Accuracy I2C DS3231AT24C32 Real Time Clock Module with 32Kbit EEPROM