DS3231 Precision Real-Time Clock Module with Battery

Microcontrollers forget the time when power is lost. The DS3231 keeps the date and time running on its coin-cell battery and stays accurate to about a minute per year thanks to a temperature-compensated crystal. It also offers two alarms, a square-wave output and a 32 KB EEPROM on many modules — ideal for data loggers, timers and schedulers.

Key features

• ±2 ppm accuracy (≈ 1 minute per year)
• Keeps time through power outages with a backup battery
• Two programmable alarms and square-wave output
• I²C interface; AT24C32 EEPROM on board

Specifications

What's in the box

• 1 × DS3231 module
• 1 × backup battery

Ideal for

• Data loggers
• Automatic feeders and irrigation timers
• Clocks and attendance systems