PCF8563-HXY

The PCF8563 is a low-power CMOS real-time clock/calendar IC featuring a programmable clock output, an interrupt output, and a power-down detector. All addresses and data are transferred serially via the I²C bus interface at a maximum bus speed of 400kbps. The internal word address register increments automatically after each read/write operation.

Applications

• Portable media players
• Mobile phones
• Multi-rate energy meters
• IC card water meters
• IC card gas meters
• Fax machines
• Security electronics

Key features

• Timekeeping of seconds, minutes, hours, day of week, date, month, and year based on a 32.768kHz crystal, with century flag
• Wide operating voltage range: 2.5~5.5V
• Low standby current: typical 0.25μA (VDD=3.0V, TA=25℃)
• I²C bus slave address: read, 0A3H; write, 0A2H
• Programmable clock output frequency: 32.768kHz, 1024Hz, 32Hz, 1Hz
• Alarm and timer functions
• Integrated power-fail detector
• Internal oscillator capacitor
• Open-drain interrupt pin