DS17287-3+ datasheet by Maxim Integrated Products

DS17287-3+ Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the DS17287-3+ to minimize noise and ensure reliable operation?
  The recommended layout and routing for the DS17287-3+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the crystal oscillator. Additionally, it is recommended to use a low-ESR capacitor for the VCC bypass capacitor.
• How do I ensure the accuracy of the real-time clock (RTC) in the DS17287-3+?
  To ensure the accuracy of the RTC, it is recommended to use a high-quality crystal oscillator, maintain a stable power supply, and minimize the effects of temperature and voltage variations on the device. Additionally, the RTC can be calibrated using the built-in calibration feature.
• What is the maximum frequency of the clock output of the DS17287-3+?
  The maximum frequency of the clock output of the DS17287-3+ is 32.768 kHz, which is the typical frequency of a watch crystal oscillator.
• Can the DS17287-3+ be used in a battery-backed SRAM application?
  Yes, the DS17287-3+ can be used in a battery-backed SRAM application. The device has a built-in battery switch and a low-battery detector, making it suitable for battery-backed SRAM applications.
• How do I interface the DS17287-3+ with a microcontroller?
  The DS17287-3+ can be interfaced with a microcontroller using a serial interface such as I2C or SPI. The device has a built-in serial interface that allows it to communicate with a microcontroller.