PCF8564AU/5GB/1,01

Real Time Clock Overview

The PCF8564AU/5GB/1,01 is a bare die CMOS real-time clock 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 wide clock operating voltage of 1.0 V to 5.5 V and a low back-up current typical of 250 nA at 3.0 V and 25 °C. It includes a 400 kHz two-wire I²C interface (1.8 V to 5.5 V), a low-voltage detector, alarm and timer functions, two integrated oscillator capacitors, and an internal Power-On Reset. The I²C slave address is read A3h and write A2h.

Real Time Clock Feature Summary

• Provides timekeeping based on a 32.768 kHz quartz crystal with BCD-coded registers.
• Wide operating voltage range from 1.0 V to 5.5 V with low backup current of 250 nA typical.
• Includes programmable clock output (32.768 kHz, 1.024 kHz, 32 Hz, 1 Hz) and interrupt capabilities.
• Features built-in voltage low detector and internal Power-On Reset (POR).

Real Time Clock Applications

• Timing devices such as time-of-day tracking and process timing
• Portable instruments
• Electronic metering
• Battery powered products

Real Time Clock Procurement Notes

Verify the ordering suffix /5GB/1,01 corresponds to the unsawn wafer delivery form as specified in the NXP data sheet. Confirm that the bare die package type matches the system's flip-chip or wire bond requirements. Ensure the IC revision level meets the design specifications before procurement.

Real Time Clock Selection Notes

Select this component for applications requiring a low-power RTC with a wide voltage range down to 1.0 V. The bare die format necessitates specific packaging considerations during assembly. Verify compatibility with the host microcontroller's I²C bus speed and voltage levels.

Real Time Clock Part Context

This part number belongs to the PCF8564A family of real-time clocks and calendars. The AU designation indicates a bare die wire bond die with 9 bonding pads. The /5GB/1,01 suffix specifies the delivery form as an unsawn wafer. This component is designed for integration into systems requiring precise timekeeping with minimal power consumption.

Real Time Clock Replacement Considerations

PCF8563 is a compatible alternative offering similar functionality in packaged formats.