Overview
PCF8563 is a low-power CMOS real-time clock/calendar chip, which provides a programmable clock output, an interrupt output and a power-off detector. All addresses and data are transmitted serially through the I2C bus interface. The maximum bus speed is 400Kbits/s. After each read and write of data, the embedded word address register will automatically increase.
Features 
Low operating current: 0.25μA typical (VDD=3.0V, Tamb=25℃); Century logo; Large operating voltage range: 1.0～5.5V; Low sleep current: 0.25μA typical (VDD=3.0V, Tamb=25℃); 400KHz I2C bus interface (VDD=1.8～5.5V); Programmable clock output frequency: 32.768KHz, 1024Hz, 32Hz, 1Hz; Alarm and timer; Power failure detector; Internal integrated oscillator capacitor; 
On-chip power reset function; I2C bus slave address: Read: 0A3H; Write: 0A2H; Open drain interrupt pin.
Applications Mobile phones; Portable instruments; Fax machines; Battery-powered products.
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51 MCU application development from entry to mastery
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Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
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