DS1374U-3+T&R datasheet by Maxim Integrated Products

DS1374U-3+T&R Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1374U-3+T&R?
  The recommended power-up sequence is to apply VCC first, followed by VBAT. This ensures that the internal registers are properly initialized and the device operates correctly.
• How do I handle the case where the battery is dead or removed?
  When the battery is dead or removed, the DS1374U-3+T&R will automatically switch to VCC as the power source. However, it's recommended to use a supervisory circuit to monitor the battery voltage and generate a reset signal to the microcontroller if the battery voltage falls below a certain threshold.
• What is the maximum capacitance value that can be connected to the X1 and X2 pins?
  The maximum capacitance value that can be connected to the X1 and X2 pins is 20pF. Exceeding this value may affect the oscillator's stability and frequency accuracy.
• How do I ensure that the DS1374U-3+T&R oscillator starts up correctly?
  To ensure that the oscillator starts up correctly, make sure that the X1 and X2 pins are properly terminated with a crystal or ceramic resonator, and that the oscillator enable pin (OE) is driven high during power-up.
• What is the purpose of the RST pin, and how should it be used?
  The RST pin is an active-low reset input that can be used to reset the DS1374U-3+T&R. It should be connected to a microcontroller's reset output or a manual reset switch. When the RST pin is driven low, the device will reset and all registers will be cleared.