The 32.768 kHz crystal oscillator is a crucial component for real-time clock (RTC) circuits and other timing applications. This particular model, manufactured by Epson Company, features a frequency of 32.768 kHz with a tolerance of ±20 ppm and a load capacitance of 12.5 pF. It's designed for accuracy and stability in timekeeping applications.

Applications

• Real-Time Clocks (RTC)
• Microcontroller Timing
• Wristwatches
• Timers
• Low-Frequency Oscillators

Features

• Frequency: 32.768 kHz
• Frequency Tolerance: ±20 ppm
• Load Capacitance: 12.5 pF
• Compact Size
• High Stability

Benefits

• Accurate Timekeeping: Provides a precise time reference for RTC circuits.
• Low Power Consumption: Minimizes battery drain in portable devices.
• Stable Operation: Maintains frequency accuracy over a wide temperature range.
• Easy Integration: Readily compatible with standard microcontroller and RTC interfaces.
• Reliable Performance: Ensures long-term accuracy and stability.

Additional Details

The 32.768 kHz crystal oscillator is widely used in devices requiring accurate timekeeping, such as watches, clocks, and embedded systems. The frequency of 32.768 kHz is chosen because it can be easily divided down to 1 Hz using a 15-bit binary counter, simplifying the implementation of real-time clocks. The crystal's frequency tolerance is a crucial specification, as it directly affects the accuracy of the timekeeping. A lower tolerance value indicates a more accurate crystal. The load capacitance is another important parameter, as it determines the external capacitance required for optimal crystal oscillation. It's essential to match the crystal's load capacitance with the circuit's load capacitance to ensure proper operation. Epson's 32.768 kHz crystals are known for their high quality and reliability, making them a popular choice for demanding timing applications.

The crystal is housed in a small package suitable for surface mount or through-hole mounting, depending on the specific model. It's typically connected to a microcontroller or RTC chip via two pins, with external capacitors sometimes required for optimal performance.