MCP79411-I/ST

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MCP79411-I/ST is a real-time clock (RTC) that provides an interface between the internal clock and calendar and the external environment, enabling numerous control and timing functions in embedded systems.The device makes it possible to control and synchronize events on a real-time basis, allowing a wide range of applications.

The integrated oscillator module of a MCP79411-I/ST provides a time base that is frequency-insensitive over operating temperature and supply voltage ranges.The temperature compensation feature minimizes the variations of the date/time output in extreme operating conditions. The oscillator module is based on an oscillator circuit that incorporates an external miniaturized quartz crystal.

MCP79411-I/ST application fields include alarm monitoring, automotive and industrial automation, energy management, instrumentation, laboratory research and development, mobile phones, power meters, security systems, smart homes and access control. The application fields makes use of the advanced features of the RTC to accurately schedule events in various timezones and schedule multiple alarms.This time synchronization ensures reliable timekeeping and enables data logging, communication synchronisation and authentication, temperature logging and other various time related calculations.

The core working principle of MCP79411-I/ST is based on a unique combination of an oscillator module and a general purpose real-time clock/calendar. The clock/calendar is powered from a reliable 32 kHz quartz crystal, enabling the device to maintain accurate timekeeping, calendar and alarm functions for many years. The crystal oscillator is robust and highly stable, and offers an accuracy of ±1 ppm over a wide temperature range operation.

MCP79411-I/ST utilizes a Manual Adjustment Mode (MAR) feature, which allows the user to manually tune to specific frequency reference for a normally aging oscillator, to allow the device to remain at its original accuracy. This MAR feature can be set to limit the drift, ensuring long time accuracy.

MCP79411-I/ST also has additional features such as programmable time registers and crystal selection. The register settings, backup configurable registers and a programmable backup reset enable users to configure, reset and shut down the device automatically. The backup registers enable the system to remain powered, eliminating the need to set the time or alarms again when power is returned.

The device also supports external battery input (VBACKUP) which allows users to maintain time and alarms even when the power is disconnected. This feature is a great help for applications that are expected to run for large spans of times. The external battery also allows for low power usage, eliminating the need for costly power supplies.

MCP79411-I/ST is also extremely flexible and configurable and supports several modes of operation. This enables designers to configure the device to meet their application specific requirements. The parameters are fully programmable, allowing users to adjust the device settings to most usage and timing scenarios while also providing flexibility for future modifications.

The MCP79411-I/ST provides an extremely cost effective and reliable solution for real-time timing and calendar needs for embedded systems.It is a fully featured real-time clock with crystal oscillator and features that can be used in many applications, from basic alarms to more advanced scheduling and logging applications. Thanks to its flexibility and robustness, the MCP79411-I/ST is an ideal solution for many embedded systems.

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