DS3231S# datasheet by Maxim Integrated Products

DS3231S# Frequently Asked Questions (FAQs)

• What is the accuracy of the internal oscillator?
  The internal oscillator has an accuracy of ±2 ppm from 0°C to 40°C, and ±3 ppm from -40°C to 85°C.
• How do I set the clock to start from a specific date and time?
  You can set the clock by writing the desired date and time to the RTC registers (0x00-0x07) using the I2C interface.
• What is the purpose of the EOSC pin?
  The EOSC (Enable Oscillator) pin is used to enable or disable the internal oscillator. When EOSC is high, the oscillator is enabled, and when it's low, the oscillator is disabled.
• How do I use the alarm functions?
  The alarm functions can be used to generate an interrupt when a specific date and time is reached. You need to set the alarm registers (0x08-0x0F) with the desired date and time, and enable the alarm interrupt.
• What is the maximum frequency of the SQW pin?
  The SQW (Square Wave) pin can output a frequency up to 32.768 kHz, which is the same frequency as the internal oscillator.