Functional Introduction

The AT8563 supports the following features and specifications on the Real Time Clock (RTC) module.

• Wide working voltage range: 1.0 V to 5.5 V
• The typical value of low sleep current is 0.25 μ A (VDD = 3.0 V, Tamb = 25 ℃)
• With a century symbol, it can work from year 1900 to 2099 (years are related to the century, mainly used to calculate the number of days in February during leap years)
• I2C bus interface supports the frequency up to 400k Hz (VDD = 1.8 V to 5.5V); Read address is 0A3H and write address is 0A2H
• Programmable clock output frequency is 2.768k Hz/1024 Hz/32 Hz/1 Hz
• Contains alarms and timers
• Supports low voltage detection function and power-on reset failure function
• Open drain interrupt output pin