MS8563T

MS8563x is a low-power CMOS real-time clock/calendar IC featuring a programmable clock output, interrupt output, and power-fail detector. All addresses and data are transferred serially via the I2C bus interface at a maximum bus speed of 400Kbits/s. 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 based on a 32.768kHz crystal for seconds, minutes, hours, day of week, date, month, and year, with century indicator.
• Wide operating voltage range: 1.2~5.5V.
• Low standby current: typical 0.25μA (VDD = 3.0V, TA = 25℃).
• I2C bus slave address: read, 0A3H; write, 0A2H.
• Programmable clock output frequencies: 32.768kHz, 1024Hz, 32Hz, 1Hz.
• Alarm and timer functions.
• Integrated power-fail detector.
• Built-in oscillator capacitor.
• Package: SOP-8/DIP-8.
• Open-drain interrupt pin.