PCF8523TS/1,112 datasheet by NXP Semiconductors

PCF8523TS/1,112 Frequently Asked Questions (FAQs)

• What is the recommended crystal oscillator frequency for PCF8523TS/1,112?
  The recommended crystal oscillator frequency for PCF8523TS/1,112 is 32.768 kHz, which is a standard frequency for real-time clocks.
• How do I configure the PCF8523TS/1,112 for battery-backed operation?
  To configure the PCF8523TS/1,112 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 clock accuracy of the PCF8523TS/1,112?
  The maximum clock accuracy of the PCF8523TS/1,112 is ±2 minutes per year at 25°C, which is equivalent to an accuracy of ±5 ppm.
• Can I use the PCF8523TS/1,112 as a timer?
  Yes, the PCF8523TS/1,112 has a built-in timer function that can be used to generate interrupts at specific intervals. The timer can be configured to operate in one-shot or periodic mode.
• How do I reset the PCF8523TS/1,112?
  The PCF8523TS/1,112 can be reset by pulling the RST pin low for at least 1 ms. This will reset the device to its default state and clear all registers.