PCF85063ATT/AJ

Real Time Clock Overview

The PCF85063ATT/AJ is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption, manufactured by NXP Semiconductors. It operates within a clock voltage range of 0.9 V to 5.5 V and features a typical current consumption of 0.22 μA at VDD = 3.3 V and Tamb = 25 °C. The device communicates via a two-line bidirectional I2C-bus with a maximum data rate of 400 kbit/s. It provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal. The component includes an offset register for fine-tuning the clock frequency and selectable integrated oscillator load capacitors.

Real Time Clock Feature Summary

• I2C interface supporting up to 400 kbit/s data rate
• Programmable clock output providing frequencies from 32.768 kHz down to 1 Hz
• Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF
• Alarm function, countdown timer, and minute/half-minute interrupts

Real Time Clock Applications

• Digital still camera
• Digital video camera
• Printers
• Copy machines
• Mobile equipment
• Battery-powered devices

Real Time Clock Procurement Notes

Verify that the ordering suffix AJ corresponds to the TSSOP8 package type as specified in the manufacturer's ordering information table. Confirm the packing method matches the required reel specifications for production integration. Ensure environmental compliance certificates are available if RoHS or halogen-free status is required for the specific batch.

Real Time Clock Selection Notes

Select this part when a TSSOP8 package is required for the PCF85063A RTC functionality. The device supports both 12-hour and 24-hour time formats and includes software reset capabilities. Consider the internal Power-On Reset (POR) and oscillator stop detection functions for system reliability. Verify that the operating temperature range of -40 °C to +85 °C meets the application requirements.

Real Time Clock Part Context

The PCF85063ATT/AJ belongs to the PCF85063A family of tiny real-time clocks. It shares core functionalities with other variants such as the SO8 (PCF85063AT) and DFN2626-10 (PCF85063ATL) packages. The primary distinction lies in the physical package dimensions and pin configuration, while maintaining identical electrical characteristics and register maps across the family.

Real Time Clock Replacement Considerations

Direct package replacements include PCF85063ATT/AJ from other distributors. For different packages, consider PCF85063AT/AY (SO8) or PCF85063ATL/1,118 (DFN2626-10). Ensure pin compatibility and PCB footprint adjustments are made when switching between package types.