PCF8563BS/4,118

Real Time Clock Overview

The PCF8563BS/4,118 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. It provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal. The device features a 400 kHz I²C-bus interface, programmable clock output, alarm and timer functions, and an open-drain interrupt pin. Operating voltage ranges from 1.0 V to 5.5 V, with a typical backup current of 0.25 μA at VDD = 3.0 V. It includes integrated oscillator capacitors, internal Power-On Reset (POR), and a voltage-low detector.

Real Time Clock Feature Summary

• Provides complete timekeeping including year, month, day, weekday, hours, minutes, and seconds.
• Features a 400 kHz two-wire I²C-bus interface compatible with standard and fast mode devices.
• Includes programmable clock output frequencies: 32.768 kHz, 1.024 kHz, 32 Hz, and 1 Hz.
• Integrates alarm and timer functions with open-drain interrupt capability.

Real Time Clock Applications

• Mobile telephones
• Portable instruments
• Electronic metering
• Battery-powered products

Real Time Clock Procurement Notes

Verify the package type HVSON10 (SOT650-1) and ordering suffix /4,118 against the latest NXP datasheet before procurement. Confirm that the component meets the required operating temperature range and voltage specifications for the target application environment.

Real Time Clock Selection Notes

Select this part for applications requiring low standby current and precise timekeeping via I²C. Ensure the design supports the 1.0 V to 5.5 V supply range. Consider the HVSON10 package dimensions (3 × 3 × 0.85 mm) for PCB layout constraints. Verify compatibility with the host microcontroller's I²C bus speed and voltage levels.

Real Time Clock Part Context

The PCF8563 series is a family of CMOS RTCs designed for low-power applications. The PCF8563BS/4 variant specifically utilizes the HVSON10 package. This component serves as a reliable timebase for embedded systems, offering calendar functions and programmable outputs without requiring external components for the oscillator circuit.

Real Time Clock Replacement Considerations

The datasheet notes that this part is not recommended for new designs and suggests PCF85063ATL as a replacement. Verify functional compatibility and pinout correspondence if substituting.