DS1337C datasheet by Maxim Integrated Products

DS1337C Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for the DS1337C?
  The recommended crystal oscillator frequency for the DS1337C is 32.768 kHz, which is a standard frequency for real-time clocks.
• How does the DS1337C handle battery switchover during power failure?
  The DS1337C has a built-in battery switchover circuit that automatically switches to the backup battery during power failure, ensuring continuous operation of the real-time clock.
• What is the accuracy of the DS1337C's internal oscillator?
  The accuracy of the DS1337C's internal oscillator is ±10 ppm (parts per million) over the operating temperature range of -40°C to +85°C.
• Can the DS1337C be used in a system with multiple power domains?
  Yes, the DS1337C can be used in a system with multiple power domains. It has a separate power pin for the real-time clock (VCC) and the battery (VBAT), allowing it to operate independently of the system power domain.
• How does the DS1337C handle clock calibration?
  The DS1337C has a built-in clock calibration circuit that allows the clock to be calibrated to an external reference clock. This ensures that the clock remains accurate over time.