RTC-8564JEB

Key Features:

- Functions: clock/calendar, timer, alarm;
- Serial input/output: I²C™ bus;
- Oscillator frequency accuracy: ±23 ppm (3V, 25°C);
- Supply voltage:
Bus: 1.8÷5.5 V;
Clock: 1.0÷5.5 V;
- Operating temperature: -40÷85°C;
- Current consumption: 275nA for VDD = 3.0 V;
- Available in VSOJ20 package.

Block Diagram:

- Bidirectional, two-wire (clock/data), serial, synchronous I²C™ interface (max. 400kHz);
- Control Logic unit;
- Built-in 32.768 kHz oscillator;
- Frequency divider;
- Power-on reset circuit;
- Address register – automatically increments by 1 byte after each data write/read;
- Power-down detection (VLOW = 0.9 V);
- Output Control – clock signal output with selectable programmable frequency: 32768, 1024, 32, or 1 Hz;

Device Registers:

- Control/state registers: Control 1, Control 2;
- Clock registers: Seconds, Minutes, Hours, Days, Weekdays, Month/Century, Years;
- Alarm registers: Minutes Alarm, Hour Alarm, Day Alarm, Weekday Alarm;
- CLKOUT frequency – selection of output clock frequency on CLKOUT;
- Timer Control – timer control register;
- Timer – initial value for the timer;