DS1338C-33# datasheet by Maxim Integrated Products

DS1338C-33# Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1338C-33#?
  The recommended power-up sequence is to apply VCC first, followed by VBAT. This ensures that the internal oscillator is stabilized before the RTC starts counting.
• How do I ensure that the DS1338C-33# retains its clock data during power-down?
  To ensure that the DS1338C-33# retains its clock data during power-down, connect a battery to the VBAT pin. This allows the internal oscillator to continue running, maintaining the clock data.
• What is the maximum frequency for the external clock input on the DS1338C-33#?
  The maximum frequency for the external clock input on the DS1338C-33# is 1.024 kHz. Frequencies above this may cause the device to malfunction.
• Can I use the DS1338C-33# in a 5V system?
  No, the DS1338C-33# is designed to operate at 3.3V. Using it in a 5V system may cause damage to the device or affect its performance.
• How do I reset the DS1338C-33# to its default state?
  To reset the DS1338C-33# to its default state, apply a low pulse to the RST pin. This will reset the device to its power-on default state.