DS1374C-33# - Analog Devices

DS1374C-33# Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1374C-33#?
  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 voltage (VBAT) is lower than the supply voltage (VCC)?
  In this case, the device will automatically switch to battery-backed mode, and the internal registers will be maintained. However, it's recommended to ensure that VBAT is always higher than or equal to VCC to prevent any potential issues.
• 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 accuracy.
• How do I ensure that the DS1374C-33# is in a low-power state when not in use?
  To minimize power consumption, set the EOSC bit in the Control Register to 1, which disables the oscillator. Additionally, ensure that the VCC pin is powered down or set to a low voltage state.
• What is the recommended layout and routing for the crystal oscillator circuit?
  The recommended layout and routing for the crystal oscillator circuit is to keep the X1 and X2 pins as close as possible to the crystal, and to use short, low-impedance traces to minimize noise and interference. Additionally, ensure that the crystal is placed away from any high-frequency signals or noise sources.