DS3231 RTC Module

DS3231 RTC Module

SKU: S/M-11

High Accuracy DS3231 Precise Real Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C.

The DS3231 Precise Real Time Clock Module 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.





Operating Voltage Range

2.7V ~ 5.5V (including 24C32).

Voltage Supply for RTC

2.2 V ~ 5.5 V


±2ppm from 0°C to +40°C.
±3.5ppm from -40°C to +85°C.

Battery Holder

2032 Coin Battery.

I2C interface

Fast (400kHz) I2C Interface.


AT24C32 32Kbit Serial I2C.

Time and Date Format

Time: HH: MM: SS (12/24 hr).
Date Format: YY-MM-DD-dd.

Operating Temperature Range

Commercial (0°C to +70°C)
Industrial (-40°C to +85°C).

Digital Temp Sensor Output

10 bit, ±3°C Accuracy and 0.25C resolution.


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