DS17287-5 datasheet by Maxim Integrated Products

DS17287-5 Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the DS17287-5?
  Maxim provides a recommended layout and routing guide in their application note AN1441, which includes guidelines for PCB design, component placement, and signal routing to ensure optimal performance and minimize noise.
• How do I handle the power-on reset (POR) and brown-out reset (BOR) in my design?
  The DS17287-5 has an internal POR and BOR circuitry. To handle these, ensure that your power supply is stable and within the recommended voltage range. You can also add external capacitors to filter out noise and ensure a clean power-on reset. Additionally, consider using a voltage supervisor IC to monitor the power supply and generate a reset signal if necessary.
• What is the maximum clock frequency that can be used with the DS17287-5?
  The DS17287-5 can operate with clock frequencies up to 100 kHz. However, it's recommended to use a clock frequency between 32 kHz and 50 kHz for optimal performance and to minimize power consumption.
• How do I ensure data integrity and prevent data corruption during power failures?
  The DS17287-5 has a built-in battery-backed RAM (BBRAM) that stores data during power failures. To ensure data integrity, use a high-quality battery with a long lifespan, and consider adding a capacitor to the VBAT pin to filter out noise. Additionally, implement a power-fail detect circuit to detect power failures and prevent data corruption.
• What is the typical current consumption of the DS17287-5?
  The typical current consumption of the DS17287-5 varies depending on the operating mode. In active mode, the current consumption is around 1.5 mA, while in standby mode, it's around 10 μA. In battery-backed mode, the current consumption is typically around 1 μA.