MCP795W21-I/ST

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The MCP795W21-I/ST is an integrated peripheral, designed to accurately keep track of the time of day in applications such as communications and industrial automation, as well as providing a timer and a data terminal. It is a real-time clock, powered by a long life battery and accurately tracks the time of day, even when disconnected from the power source.

The MCP795W21-I/ST operates using a memory map architecture which allows direct access to all registers without the need for dedicated instructions or I/O lines. Its timekeeping capabilities include time-of-day counters for calendar, day-of-month, day-of-week, hour, minute and second, plus a programmable interrupt which can trigger a system reset.

The MCP795W21-I/ST runs on a single AA Alkaline battery and provides 256 bytes of user-selectable RAM for storing data and 64 bytes of user EEPROM for storing user information. To ensure accurate timekeeping, it also features a programmable internal oscillator, a watchdog timer and a temperature-compensated time-of-day oscillator.

The device provides several functions to allow easy access to its internal registers and RAM. These include port monitoring, port programming, clock interrupt, enter/exit sleep mode and byte read/write. It also provides a host of power management functions, including progress timer and auto shutoff.

The MCP795W21-I/ST is designed to provide a simple, accurate and reliable method of tracking the time-of-day, as well as providing user data storage and power management. It is ideal for applications such as communications, industrial automation and data terminals, where accurate timekeeping and reliability are vital.

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