Technical Specifications

Brand:

NXP

Case/Package:

Contact Plating:

Gold

Mount:

Surface Mount

Number Of Pins:

Number of Terminals:

Ambient Temperature Range High:

85 C

Frequency:

400 kHz

Interface:

2-Wire, I2C

Logic Function:

Clock

Max Frequency:

32 kHz

Max Operating Temperature:

85 C

Max Supply Voltage:

5.5 V

Min Operating Temperature:

-40 C

Min Supply Voltage:

1.8 V

Number of Outputs:

Number of Timers/Counters:

Operating Supply Voltage:

2 V

Temperature Grade:

Industrial

Time Format:

HH:MM:SS

Height:

1.75 mm

Length:

4.9 mm

Terminal Pitch:

1.27 mm

Width:

3.9 mm

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:

Datasheet

Low Power I2C Real-Time Clock and Calendar IC with Programmable Clock Output

The PCF8563T/5,518 is a CMOS real-time clock (RTC) and calendar IC designed for low power timekeeping applications. Manufactured by NXP Semiconductors, this device provides accurate tracking of seconds, minutes, hours, days, weekdays, months, and years while consuming very low power. It communicates with microcontrollers through a two-wire I2C interface, making it easy to integrate into embedded systems, IoT devices, and battery-powered electronics.

The RTC includes additional features such as a programmable clock output, interrupt output, and voltage-low detector to improve system reliability. Data and register addresses are transferred serially over the I2C bus with automatic address increment for efficient communication. With a maximum bus speed of 400 kbit/s and a compact SOIC-8 package, the PCF8563T is widely used in devices requiring reliable real-time tracking, such as industrial controllers, consumer electronics, and smart metering systems.

Key Features

Real-Time Clock and Calendar – Tracks seconds, minutes, hours, days, weekdays, months, and years.
Low Power CMOS Design – Optimised for battery-powered and low-power embedded systems.
I2C Communication Interface – Two-wire bidirectional interface with up to 400 kbit/s bus speed.
Programmable Clock Output – Provides configurable clock signal for system timing applications.
Interrupt Output – Enables alarm and timer-based interrupt events for microcontroller control.
Voltage-Low Detection – Detects supply voltage drops for improved system reliability.
Automatic Address Increment – Simplifies multi-byte register read and write operations.
Compact SOIC-8 Package – Suitable for compact PCB layouts.