The RTC-8564JE is a low-power CMOS Real-Time Clock (RTC) IC manufactured by Epson. This device is designed for applications requiring accurate timekeeping with minimal power consumption, making it ideal for battery-powered systems. It integrates a 32.768 kHz crystal oscillator, a calendar, alarm functions, and a power management circuit to ensure continuous operation even during power outages. The I2C interface simplifies communication with microcontrollers and processors.

Applications

• Consumer Electronics: Portable media players, digital cameras, and wearable devices.
• Industrial Automation: Data loggers, programmable logic controllers (PLCs), and monitoring equipment.
• Metering: Smart meters for electricity, water, and gas monitoring.
• Office Equipment: Printers, copiers, and fax machines requiring time synchronization.
• Point-of-Sale Systems: Electronic cash registers and payment terminals.
• Automotive Systems: Car navigation, telematics, and vehicle tracking devices.
• Medical Devices: Portable medical equipment requiring accurate timekeeping.

Features

• Ultra-Low Power Consumption: Minimizes battery drain, extending the operational life of battery-powered devices.
• I2C Serial Interface: Allows easy communication with microcontrollers and other digital systems.
• Calendar and Time Functions: Provides year, month, day, weekday, hours, minutes, and seconds.
• Alarm Function with Interrupt: Generates an interrupt signal when a pre-set alarm time is reached.
• Automatic Switching to Backup Power: Seamlessly switches to a backup power source (e.g., battery) in the event of a main power failure.
• Programmable Output Clock: Allows generating a clock signal with programmable frequency for other system components.
• Small Package Size: Available in compact packages such as SOP, reducing board space requirements.

Benefits

• Accurate and Reliable Timekeeping: Ensures precise time information for critical applications.
• Long Battery Life: Low power consumption translates to prolonged battery life in portable devices.
• Simplified System Integration: I2C interface simplifies communication and reduces development time.
• Reduced System Cost: Integrated features minimize the need for external components.
• Robust Performance: Designed for reliable operation in a variety of environmental conditions.
• Data Logging Capability: Allows for accurate time-stamping of events and data.

Additional Details

The RTC-8564JE operates with a supply voltage range of typically 1.3V to 5.5V. It uses a standard 32.768 kHz crystal oscillator for accurate timekeeping. The operating temperature range generally spans from -40°C to +85°C. The device supports both standard and fast I2C communication speeds. The integrated power management circuitry enables the RTC to maintain timekeeping even when the main power is disconnected by switching to a backup power source like a coin cell battery.