X1286A8

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The X1286A8 is a real-time clock and calendar chip designed by Xicor Corporation to provide reliable and accurate time information in any type of computer or embedded system. It is a low-cost and low-power clock solution that is suitable for applications requiring reliable real-time information. The X1286A8 is available in both commercial and industrial grade versions and provides a +10/-1 ppm accuracy value at 25℃.

The X1286A8 uses a self-contained pre-charged low-power timekeeping element, together with a built-in clock control logic circuit, to ensure reliable timekeeping even in the absence of an external oscillator. It also provides a protected battery backup connection for extended periods without external power. The X1286A8 has a 64-year calendar, a 48-bit time-of-day register, and 256 bytes of RAM. It is pin-compatible with both the X1286A and X1286A-L devices, and is suitable for use with microprocessors and microcontrollers running at 3.3 and 5 volts.

The X1286A8 is a versatile device and can be used in a wide range of applications. It can be used to provide accurate start and end times on alarms and timers, to control lighting systems and to generate user notifications, as well as to monitor the performance of distributed systems. The X1286A8 can also be used to calculate target times and to monitor multiple processes, such as the data transmission of a wireless sensor network. In addition, it can be used in test and measurement systems, as well as in embedded systems that require accurate real-time information.

The X1286A8 is a RTC (Real-Time Clock) device and is based on an oscillator which is used to measure the time between clock pulses. This oscillator is an external crystal that provides a 32.768 kHz frequency. This frequency is divided by four by the X1286A8 to generate a signal with a frequency of 8.192 kHz. This signal is then used to time different events and to generate interrupts for the microcontroller. The X1286A8 also has an on-chip temperature sensor which is used to provide temperature readings for the microcontroller.The X1286A8 can be used to measure and keep track of the time with an accuracy of +10/-1 ppm. The accuracy is determined by how much current is flowing through the external crystal, so if the crystal is not achieving the specified accuracy, then it can be adjusted by increasing the current. This can be done by placing the external crystal in a package that is able to adjust the current to the required level. In addition, the X1286A8 also acts as a backup to the main clock, and if the main clock fails, the X1286A8 will switch to its own clock source and continue to provide accurate time information even without the main clock running.

The X1286A8 is a reliable and cost effective solution for applications that require accurate real-time information and can be used in a variety of embedded systems, test and measurement systems, lighting systems, and other applications. It is versatile, easy to use, and provides a high degree of accuracy.

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