DS3231 i2C Precision Clock RTC with AT24C32 Memory

DS3231 I2C Precision RTC Module with AT24C32 Memory is a highly accurate real-time clock module designed for breadboard projects. Combining the DS3231 RTC chip with the AT24C32 EEPROM, it features a temperature-compensated crystal oscillator for precise timekeeping.

The module includes a built-in voltage comparator that monitors VCC, detects power failures, and automatically switches to backup power to ensure continuous operation.

Key Features

• Highly accurate real-time clock for reliable timekeeping
• Battery backup input for uninterrupted timekeeping even during power outages
• Low power operation to extend battery life
• Breadboard-friendly 6-pin header for easy prototyping

Applications

• Create custom clocks using LCD, OLED, or HDMI displays
• Time-stamp data logging projects
• Schedule events to occur at specific times of day, week, or month

Specifications

• Clock chip: DS3231
• Memory chip: AT24C32 (32KB)
• Operating voltage: 3.3V – 5.5V DC
• Communication: I2C bus, up to 400 kHz
• Operating temperature: Commercial 0°C to +70°C, Industrial -40°C to +85°C
• Accuracy: ±2ppm (0°C to +40°C), ±3.5ppm (-40°C to +85°C)
• Dimensions: 38 × 22 × 14 mm (1.5 × 0.87 × 0.55 in)