DS1307ZN/T&R datasheet by Maxim Integrated Products

DS1307ZN/T&R Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for the DS1307?
  The recommended crystal oscillator frequency for the DS1307 is 32.768 kHz, which is a standard frequency for real-time clocks.
• How does the DS1307 handle leap years?
  The DS1307 automatically handles leap years, taking into account the extra day in February for years that are divisible by 4 (e.g., 2020, 2024, etc.).
• What is the backup battery life for the DS1307?
  The backup battery life for the DS1307 depends on the type and capacity of the battery used, but typically ranges from 5 to 10 years with a 48mAh battery.
• Can the DS1307 be used with a non-standard oscillator frequency?
  While the DS1307 is designed to work with a 32.768 kHz oscillator, it can be used with other frequencies, but this may require adjustments to the clock calibration and may affect accuracy.
• How does the DS1307 handle power failures?
  The DS1307 has a built-in battery-backed register that retains the clock data during power failures, allowing the clock to continue running even when the main power supply is interrupted.