PCF2127AT/1,512 datasheet by NXP Semiconductors

PCF2127AT/1,512 Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for PCF2127AT/1,512?
  The recommended crystal oscillator frequency for PCF2127AT/1,512 is 32.768 kHz, which is a standard frequency for real-time clocks.
• How do I configure the PCF2127AT/1,512 for battery-backed operation?
  To configure the PCF2127AT/1,512 for battery-backed operation, connect a battery to the VBAT pin and ensure that the VCC pin is connected to a power source. The device will automatically switch to battery-backed mode when VCC is below the battery switch-over voltage (typically 1.5 V).
• What is the maximum operating temperature range for PCF2127AT/1,512?
  The maximum operating temperature range for PCF2127AT/1,512 is -40°C to +85°C, making it suitable for a wide range of industrial and automotive applications.
• How do I reset the PCF2127AT/1,512 to its default settings?
  To reset the PCF2127AT/1,512 to its default settings, apply a low signal to the RST pin for at least 1 ms. This will reset the device to its power-on default state.
• What is the typical current consumption of PCF2127AT/1,512 in battery-backed mode?
  The typical current consumption of PCF2127AT/1,512 in battery-backed mode is around 0.5 μA, making it suitable for battery-powered applications.