DS3231 RTC Timer Module for Arduino & Raspberry Pi | High-Precision Real Time ClockSKU 2023

Sensors & Modules

DS3231 RTC Timer Module for Arduino & Raspberry Pi | High-Precision Real Time Clock

₹169

01 — About

What it does

The DS3231 RTC Timer Module for Arduino & Raspberry Pi | High-Precision Real Time Clock is a low-cost, extremely accurate I2C real-time clock with an integrated temperature-compensated crystal oscillator. It maintains accurate timekeeping even when the main power is off.

Key features

  • Highly accurate RTC with ±2ppm (±5 seconds/month) precision
  • Integrated TCXO (temperature-compensated crystal oscillator)
  • I2C interface for easy microcontroller connection
  • CR2032 battery backup maintains time during power loss
  • Two programmable alarms for scheduled events
  • Built-in temperature sensor with ±3°C accuracy
  • Aging trim register for fine calibration

Good to know

  • Install CR2032 battery for time retention during power loss
  • Use RTClib by Adafruit for Arduino support
  • First run requires setting the time via microcontroller
  • Built-in temperature sensor can be read but is for TCXO compensation
  • SQW pin outputs square wave or alarm signal – configure as needed

02 — Datasheet

Specifications

09
Model
DS3231
Accuracy
±2ppm (0°C to +40°C)
Interface
I2C (100kHz/400kHz)
I2C Address
0x68
Operating Voltage
3.3V – 5V
Backup Battery
CR2032 (not included)
Temperature Sensor
±3°C
Alarm Outputs
2 programmable
Dimensions
38mm x 22mm