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