X1228S14-2.7A

The X1228S14-2.7A real-time clock (RTC) is a long-term, low power, reliable, clock/calendar that functions in a wide temperature range and ensures minimum accuracy. This application field and working principle of X1228S14-2.7A can be divided into the following three categories:

Application Field

X1228S14-2.7A is often used to provide reliable timekeeping for:

• Data logging systems
• Building/facility security and monitoring systems
• Industrial and domestic control systems
• Robotics and automation systems
• Instrumentation systems
• Automotive engine control systems
• Medical alert/remote access systems
• Embedded systems
• IoT applications

Working Principle

X1228S14-2.7A operates on the principle of counting and measuring oscillatory frequency or pulse duration, related to the actual frequency of a quartz crystal oscillator. It uses a highly accurate crystal oscillator to generate a precise and stable clock signal. This frequency is then divided down to the correct timekeeping frequency of 1 Hz (i.e. 1 second per count). Each 1Hz count needs to be recorded in an onboard non-volatile memory, thus saving the time when power is removed from the system.

The X1228S14-2.7A timekeeping functions utilizes a 32.768kHz crystal oscillator and includes a power fail flag with an unflagged charge time of 14ms typical, and an unflagged time of 40ms. The total power fail time is 70ms. Additionally, the device includes a temperature-compensated oscillator which keeps the time accurate over a wide temperature range of -40°C to +85°C to ensure reliable operation.

X1228S14-2.7A also features an Absolute Maximum Ratings section that specifies voltage tolerances, input current limits and other specifications. These ratings ensure full device compatibility with a wide range of environmental conditions, ensuring accurate timekeeping from second to second.

Conclusion

In conclusion, X1228S14-2.7A real-time clock (RTC) is a long-term, low power, reliable, clock/calendar that functions in a wide temperature range and ensures minimum accuracy. It is designed for applications such as data logging systems, building/facility security and monitoring systems, industrial and domestic control systems, robotics and automation systems, instrumentation systems, automotive engine control systems, medical alert/remote access systems, embedded systems, or IoT applications. It operates on the principle of counting and measuring oscillatory frequency or pulse duration, related to the actual frequency of a quartz crystal oscillator, and features an absolute maximum ratings section that specifies voltage tolerances, input current limits and other specifications.