DS3231 AT24C32 High Accuracy Real Time Clock RTC Modules
Price RM10.30
Size (L x W x H) 3.8 cm x 2.2 cm x 1.4 cm
Availability In Stock
  • High Quality Control
  • 100% Ready Stock
  • Same Day Dispatch
  • 1 Month Manufacturing Defect Warranty


The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC". And, hey, it does exactly what it says and it is the most precise RTC you can get in a small, low power package.


Most RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly when the temperature changes (the temperature changes the oscillation frequency very very very slightly but it does add up!) This RTC is in a beefy package because the crystal is inside the chip! And right next to the integrated crystal is a temperature sensor. That sensor compensates for the frequency changes by adding or removing clock ticks so that the timekeeping stays on schedule.



  • Can be connected directly to the microcontroller IO ports
  • 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
  • Address can be set using the pins A0/A1/A2 (the default address is 0x57)
  • Battery socket compatible with LIR2032 batteries
  • 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 
  • I2C bus interface maximum speed: 400 kHz
  • Size: 38mm (length) * 22mm (W) * 14mm (height)



Reviews (0)
view all
0 reviews
What's in the box

1x DS3231 AT24C32 High Accuracy Real Time Clock RTC Modules 

Tags: Module