DS3231SN datasheet by Maxim Integrated Products

DS3231SN Frequently Asked Questions (FAQs)

• What is the accuracy of the DS3231SN's internal oscillator?
  The internal oscillator of the DS3231SN 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 time on the DS3231SN?
  The time can be set on the DS3231SN by writing to the hour, minute, second, day, date, month, and year registers using the I2C interface.
• What is the purpose of the EOSC pin on the DS3231SN?
  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 is low, the oscillator is disabled.
• Can the DS3231SN be used as a battery-backed RTC?
  Yes, the DS3231SN can be used as a battery-backed RTC. It has a battery input pin (VBAT) that allows it to continue keeping time even when the main power supply is removed.
• What is the maximum frequency of the SQW pin on the DS3231SN?
  The SQW (Square Wave) pin on the DS3231SN can output a square wave at frequencies up to 32.768 kHz.