DS3231 Real Time Clock Module I2C with AT24C32 Memory

DS3231 High-Accuracy I2C Real Time Clock Module with AT24C32 EEPROM Unlock precision timekeeping in your electronics projects with the DS3231 Real Time Clock (RTC) module. This is a low-cost yet extremely accurate I2C RTC, featuring an integrated temperature-compensated crystal oscillator (TCXO) that ensures remarkable long-term stability. The module reliably keeps track of seconds, minutes, hours, date, month, and year, with automatic adjustments for months with fewer than 31 days and leap-year compensation valid up to the year 2100. Beyond timekeeping, this versatile board includes an onboard AT24C32 EEPROM chip, providing 32K of memory for data logging, storing user settings, or any other non-volatile storage needs. With its battery backup circuit, the module maintains accurate time even when the main power supply is disconnected. It is an essential component for any time-sensitive DIY project, including data loggers, alarm clocks, and automation systems, and is fully compatible with popular platforms like Arduino and Raspberry Pi. Specifications Main Chips: DS3231 (RTC) & AT24C32 (EEPROM) Operating Voltage: 3.3V – 5.5V Communication Interface: I2C Bus (Max Speed: 400KHz at 5V) Clock Accuracy: 2ppm (within 0-40°C range), approx. 1 minute error per year Memory Capacity: 32K (AT24C32) Integrated Temperature Sensor: Accuracy of ±3°C Programmable Features: Two calendar alarms and a square-wave output Dimensions: 38mm (L) x 22mm (W) x 14mm (H) Weight: 8g Backup Battery Support: Holder for CR2032 or LIR2032 battery