DS1673E-3+ datasheet by Maxim Integrated Products

DS1673E-3+ Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1673E-3+?
  The recommended power-up sequence is to apply VCC first, followed by VBAT. This ensures that the internal circuitry is properly initialized and that the device operates correctly.
• How do I ensure accurate timekeeping with the DS1673E-3+?
  To ensure accurate timekeeping, it is essential to use a high-quality crystal oscillator with a frequency tolerance of ±20 ppm or better. Additionally, the device should be calibrated periodically to account for any deviations in the crystal frequency.
• What is the purpose of the VBAT pin, and how should it be connected?
  The VBAT pin is used to connect a battery or a supercapacitor to provide backup power to the device during power failures. It should be connected to a battery or supercapacitor with a voltage range of 2.7V to 5.5V, and a capacitor with a value of at least 0.1 μF should be connected between VBAT and VCC to filter out noise.
• How do I interface the DS1673E-3+ with a microcontroller?
  The DS1673E-3+ can be interfaced with a microcontroller using a 3-wire serial interface (SCLK, SDATA, and RST). The microcontroller can communicate with the device using a serial protocol, such as I2C or SPI, to read and write data to the device's registers.
• What is the maximum operating temperature range for the DS1673E-3+?
  The DS1673E-3+ can operate over a temperature range of -40°C to +85°C, making it suitable for use in a wide range of applications, including industrial and automotive systems.