Product description: RTC DS3231 I2C real time clock module - STEMMA QT / Qwiic - Adafruit 5188
The real time clock (RTC) module from Adafruit. It features a DS3231 chip that integrates a quartz resonator and temperature compensator, which significantly improves the accuracy of the module. The accuracy of the DS3231 is ±3.5 ppm (±0.3024 seconds/day). The DS3231 I2C Real-Time RTC clock module also features a battery slot, allowing the module to maintain high timing accuracy even when the main power supply to the device is interrupted. The module also has STEMMA QT / Qwiic connectors for convenient connection.
CR1220 battery not included. Please purchase separately.
Battery connector for the real time clock module from Adafruit.
Features of DS3231 RTC real-time clock module
- Equipped with a battery slot, which allows you to maintain high precision timing even when the main power supply to the device is interrupted.
- Providing seconds, minutes, hours, day, week, month and year information.
- Automatic month-end date adjustment, including leap year adjustments.
- Clock presents data in 24-hour or 12-hour format with AM / PM indicator.
- Two programmable alarms and programmable square wave output available.
- The module has an RST pin, which can be used as a button input to reset the microprocessor.
Description of module pins
- VIN - power supply for RTC module
- GND - system ground
- SCL - I2C bus data line
- SDA - I2C bus clock line
- RST - calibration reset pin
- SQW - optional square wave or interrupt output
The manufacturer provides a user guide for the RTC module along with sample code, which is useful when starting to work with the module.
Pinoutdiagram of the module.
Specifications of RTC DS3231 module
- Supply voltage: from 3 V to 5 V
- Communication interface: I2C bus
- I2C address: 0x68
- Time measurement range: 1970 to 2100
- Work environment temperature: from -40°C to 85°C
- Timing accuracy: ±3.5 ppm (±0.3024 seconds / day)
- Product size: 25.4 x 17.8 x 7.8 mm
- Weight: 2.5 g
Set contents
- RTC DS3231 I2C real time clock module - STEMMA QT / Qwiic - Adafruit 5188
- Goldpin strip for self-soldering
Useful links |
