DS1338U-3+ datasheet by Maxim Integrated Products

DS1338U-3+ Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for the DS1338U-3+?
  The recommended crystal oscillator frequency for the DS1338U-3+ is 32.768 kHz.
• How do I ensure the accuracy of the real-time clock (RTC) in the DS1338U-3+?
  To ensure the accuracy of the RTC, use a high-quality crystal oscillator, ensure proper power supply decoupling, and minimize noise on the VCC and GND pins.
• What is the maximum operating temperature range for the DS1338U-3+?
  The maximum operating temperature range for the DS1338U-3+ is -40°C to +85°C.
• How do I reset the DS1338U-3+ to its default settings?
  To reset the DS1338U-3+, apply a low signal to the RST pin for at least 100 ns. This will reset the device to its default settings.
• What is the purpose of the SQW/OUT pin on the DS1338U-3+?
  The SQW/OUT pin can be configured as a square wave output or an interrupt output. It can be used to generate a clock signal or to interrupt a microcontroller.