DS3231SN Real Time Clock (RTC) IC

Description

DS3231SN Real Time Clock Module Real Time Clock IC Integrated Circuits

• RTC, TCXO, CRYSTAL, 3.3V, 16SOIC
• Clock IC Type: RTC
• Minimum Supply Voltage: 2.3V
• Maximum Supply Voltage: 5.5V
• Digital IC Package Style: SOIC
• Number of Pins: 16
• Interface Type: I2C, Serial
• Base Number: 3231
• Clock Frequency: 32.768kHz
• IC Package Style: SOIC
• Interface: Serial, I2C
• Interface Type: I2C
• No. of Outputs: 1
• Operating Temperature Range: from a
• Package / Case: SOIC
• RTC Features: Square Wave Output
• Supply Voltage Range: from 2.3V to 5.5V
• Termination Type: SMD
• Type: RTC
• Voltage Vcc: 3.3V
• Max Voltage Vcc: 5.5V
• Min Voltage Vcc: 2.3 V

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Tutorial: How to use DS3231SN RTC

The DS3231SN is an integrated circuit that provides the time and date accurately, ideal for Arduino projects that require good time management.

What you need

• Arduino Uno or compatible
• USB Type B cable
• CR1220 battery

Steps

1. Connect the DS3231SN to the Arduino using the corresponding pins (check the datasheet)
2. Install the RTClib library through the Arduino IDE Library Manager
3. Insert a CR1220 battery into the DS3231SN cell to ensure timekeeping in case of disconnection

Example code

RTC_DS3231 rtc;

void setup() {
displayDateTime();
}

void loop() {}

void displayDateTime(){
time_t t = rtc.now();
Serial.println(ctime(&t));
}

Mini project

Create a digital clock that displays the time and date on the Arduino serial monitor

Common mistakes

• Do not install the RTClib library correctly
• Insert an incompatible battery
• Omit the connection of the SQW/INT pin to pin 2 of the Arduino to receive signals

Recommended accessories

• CR1220 battery
• RTClib library
• Arduino Uno
• USB type B cable

Frequently asked questions

How can I set the time and date?
Use the setSyncProvider() method of the RTClib library to synchronize with Arduino.

How long does the CR1220 battery last?
The duration varies but generally extends between 5-7 years under optimal conditions.