DS3231 AT24C32 IIC Precision Real Time Clock Memory Module

The DS3231 I2C precision clock module is suitable for projects that need accurate timekeeping capabilities. Typical applications include clocks and data logging devices.
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  • DS3231 is a low cost and extremely accurate I2C real-time clock, with an integrated crystal and temperature-compensated crystal oscillator (TCXO).  DS3231 can be operated using supply voltages ranging from 2.3 V to 5.5 V and it also features battery backup capabilities.
  • The DS3231 features an integrated crystal, 2 programmable time-of-day alarms, a temperature sensor, and 32.768 kHz signal output pin.
  • The AT24C32 EEPROM is a 32K EEPROM that can be used to add non-volatile data storage to your electronic projects and prototypes.
  • The module also features a battery holder, allowing you to add a backup battery to ensure continuous operation.


  • Can be connected directly to the microcontroller 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 ℃
  • I2C bus interface maximum speed: 400 kHz
  • Size: 38 x 22 x 14 mm
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Shipping & Tracking
  • We accept order for customer from Malaysia including Semenanjung, Sabah and Sarawak
  • For Sabah and Sarawak customer, it is advisable to contact us before commit to purchase. We will advise you whether we can ship to your address or not
  • Please take note that we only process the order once the money is transfer successfully and the paid amount is reflected in our account
  • Please notify us and update your payment status once payment is made. This is to avoid delay in processing your order.
  • Payment receipt only act as indication that payment has been made but serve no proof that the money is transferred successfully.
  • Item will be dispatched within 2-3 working day once payment is cleared
  • Order made on Sat or Sun will be sent on the next working day once payment is cleared
  • Order made on public holiday will be sent on the next working day once payment is cleared
  • Item normally dispatched from 9:00AM to 9:30AM everyday but not guaranteed
  • Item send by Pos Laju with tracking number. Customer will be advised if item send by other means. Please take note that Pos Laju takes some time to update their system with the tracking number. Customer can track their Pos Laju package at their website.
  • Invoice will be provided via email upon request

For order made before 9:00AM and payment is cleared before 9:00AM, we will try our best to send the same day but is not guaranteed.

Return Policy
  • 7 days warranty from the date of purchase
  • Goods sold are non-refundable, we will replace instead
  • Faulty item need to be returned to us for replacement
  • Item return must not shown symptom of abuse or modification from its original state
  • No refund for item purchased and cannot be used due to configuration issues, etc. If you are not sure, please contact us before commit to purchase
  • Replacement item will be sent once we received the faulty item
Q & A

Total 1 question(s)

Is battery included?

Question submitted by: guest on: 2015-10-30 18:14:27

Battery not included. Battery type is Lithium Ion Rechargeable (LIR) 2032. We also sell this battery in our store. Just search for 'LIR2032'.

Answer submitted by: Support on: 2015-10-30 18:31:31

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