DS1302ZN+T&R datasheet by Maxim Integrated Products

DS1302ZN+T&R Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for the DS1302?
  The recommended crystal oscillator frequency for the DS1302 is 32.768 kHz.
• How do I ensure that the DS1302 retains its clock data during power-down?
  To ensure that the DS1302 retains its clock data during power-down, connect a battery backup (such as a lithium coin cell) to the VBAT pin.
• What is the maximum clock frequency that the DS1302 can handle?
  The DS1302 can handle clock frequencies up to 100 kHz.
• Can I use the DS1302 with a microcontroller that has a 5V supply?
  Yes, the DS1302 is 5V tolerant, so it can be used with microcontrollers that have a 5V supply.
• How do I reset the DS1302 to its default state?
  To reset the DS1302 to its default state, apply a low pulse to the RST pin.