Real-Time Clock (RTC) Accuracy: ±1 minute per year (from -40°C to 85°C) Power Supply Voltage: 2.3V to 5.5V Backup Battery: 3V lithium coin cell (CR2032 or equivalent) Interface: I2C (Serial communication: SDA, SCL) Operating Temperature: -40°C to 85°C Clock Output: 32.768kHz square wave (can be disabled or adjusted to different frequencies) Timekeeping: Tracks seconds, minutes, hours, day of the week, date, month, and year Alarms: Two programmable alarm functions (time and date-based alarms) Power Consumption: Typically 0.75µA in battery-backed mode Battery Life: Typically 5 years (depends on usage and conditions) Package: 7mm x 5mm, 8-pin package (SOIC-8 or DIP-8 depending on the version)
