DS1647-120

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DS1647-120 is a low-cost and highly accurate real-time clock/calendar product, which is used in a wide variety of embedded applications such as data logging, automated security and data warehousing. The device is organized as a set of registers, RAM, voltage control and oscillator, the sub-components of the circuit. It uses a 32 kHz crystal oscillator and a 256-bit nonvolatile RAM (NVRAM) chip to maintain time-stamping. The DS1647-120 is manufactured by Dallas Semiconductor.

The DS1647-120 is based on an analog clock and calendar with three selectable time modes (Standard, Daylight, and Summer). It also has a non-volatile alarm/interval timer, a leap-year indicator, and a battery-backed RAM chip to store important information in the event of a power failure. The time can be set to adjust for Daylight Saving Time as well as leap year adjustments. It also has an alarm interrupt pin that can be used to generate an alarm or interrupt when the alarm time is reached.

The standard time mode is based on a 24-hour clock with a 12-hour format (AM/PM). The optional Summer Time mode is the same as the Standard mode but with the ability to add an additional hour in the summer months. The Daylight mode is similar to Summer Time, but instead of adding an additional hour, the clock adjusts for Daylight Savings Time.

The DS1647-120 uses an industry-standard I2C serial port, allowing the control and monitoring of the circuit with any compatible controller. The device features a high-resolution timer, which allows for precise timekeeping, even in extreme temperature changes. It also has read/write access to the RAM memory, which allows data to be stored and retrieved from the chip. The RAM can be used as a time-stamping buffer as well as a logbook.

The DS1647-120 also incorporates an automated voltage regulator to optimize the supply voltage for optimal operating conditions. This device also supports up to four temperature sensors, which can be connected to the I2C interface. The temperature sensors measure ambient temperatures and adjust the crystal oscillator accordingly, ensuring accurate timekeeping.

The DS1647-120 is used in a variety of applications, including embedded applications such as data logging, automated security and data warehousing. It is also used in industrial control systems, financial operations and home automation. The device is also used in telecommunication systems and in precision timekeeping devices.

The DS1647-120 is a cost effective and highly accurate real-time clock/calendar for embedded applications. It is easy to program and allows for precise timekeeping, even in harsh temperature changes. Its features make it a suitable choice for controlling and monitoring operations in a variety of applications.

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