PCF8563DRG

The PCF8563 is a low-power CMOS RTC/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. The maximum bus speed is 400Kbits/s, and the built-in word address register increments automatically after each read/write operation.

Applications

• Portable instruments
• Mobile phones
• Fax machines
• Multi-rate energy meters, IC card water meters
• Access control, attendance machines
• Clock calendars

Key features

• Timekeeping of seconds, minutes, hours, day of week, date, month, and year based on 32.768kHz crystal
• Century flag; wide operating voltage range: 1.2~5.5V
• Low standby current: typical 0.25μA (VDD = 3.0V, TA = 25°C)
• I2C bus slave address: read, 0A3H; write, 0A2H
• Programmable clock output frequencies: 32.768kHz, 1024Hz, 32Hz, 1Hz
• Alarm and timer functions
• Power-fail detector
• Integrated internal oscillator capacitor
• Package types: SOP-8 / MSOP-8 / DIP-8
• Open-drain interrupt pin