YSN8563MS

This device is a CMOS real-time clock and calendar chip optimized for low power consumption. It also provides programmable clock output, interrupt output, and low-voltage detection functions. All addresses and data are transferred serially through a two-wire bidirectional I²C bus, with a maximum bus speed of 400 kbit/s. The register address is automatically incremented after each write or read of a data byte.

Applications

• Mobile phones
• Portable instruments
• Electronic metering
• Battery-powered products

Key features

• Year, month, day, day-of-week, hours, minutes, and seconds based on 32.768 kHz quartz crystal
• Century flag bit included
• Clock operating voltage range: 1.0V to 5.5V at room temperature
• Low backup current: typical 0.25μA (VDD = 3.0V, Tamb = 25℃)
• 400kHz two-wire I²C bus interface (VDD = 1.8V to 5.5V)
• Programmable clock output for peripherals (32.768 kHz, 1.024 kHz, 32 Hz, and 1 Hz)
• Alarm and timer functions
• Integrated oscillator capacitor
• Built-in power-on reset circuit
• I²C bus slave address: read A3h, write A2h
• Open-drain interrupt pin