DS1375T+T&R datasheet by Maxim Integrated Products

DS1375T+T&R Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1375T+T&R?
  The recommended power-up sequence is to apply VCC first, followed by VBAT. This ensures that the internal registers are properly initialized.
• How do I ensure that the DS1375T+T&R oscillator starts reliably?
  To ensure reliable oscillator startup, make sure that the crystal oscillator circuit is properly designed and laid out, and that the crystal is of high quality. Also, ensure that the oscillator enable pin (OE) is properly driven.
• What is the maximum frequency deviation of the DS1375T+T&R's internal oscillator?
  The maximum frequency deviation of the internal oscillator is ±100 ppm over the entire operating temperature range.
• How do I handle the case where the battery (VBAT) is disconnected or drained?
  When the battery is disconnected or drained, the DS1375T+T&R will reset and all registers will be cleared. To handle this case, it is recommended to use a supervisory circuit to monitor the battery voltage and generate a reset signal to the microcontroller when the battery voltage falls below a certain threshold.
• What is the purpose of the RST pin on the DS1375T+T&R?
  The RST pin is an active-low reset input that can be used to reset the DS1375T+T&R. When the RST pin is driven low, the device will reset and all registers will be cleared.