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Analog Devices Inc./Maxim Integrated DS1747WP-120 Environmental and export classification status description

Overview of DS1747WP-120 The DS1747WP-120 is a real-time clock (RTC) integrated circuit (IC) produced by Maxim Integrated (now part of Analog Devices). This device is designed for battery-backed applications where accurate timekeeping is essential, even during power loss. Functions 1. Real-Time Clock (RTC): Provides accurate timekeeping including hours, minutes, and seconds. 2. Calendar Functions: Keeps track of date, month, and year, including leap year calculations. 3. Battery Backup: Maintains timekeeping during power outages or when the main power is turned off. 4. Interruption Capabilities: Can generate interrupts based on time settings, useful for alarm functions. 5. Temperature Compensation: Has features that help maintain accurate timing over various temperatures. 6. User-Programmable: Allows customization of time and date settings via a simple interface. Applications 1. Embedded Systems: Used in microcontrollers and other embedded applications requiring timekeeping functions. 2. Consumer Electronics: Found in products such as microwaves, clocks, and smart appliances. 3. Networking Equipment: Utilized in routers and switches for timestamping and scheduling. 4. Industrial Control Systems: Used for monitoring and control, where accurate timing is critical. 5. Medical Devices: Tracks operational time or timestamps events in various healthcare applications. Alternative Components 1. DS1307: Another popular real-time clock from Maxim Integrated, often used for similar applications but with different pin configurations and features. 2. PCF8523: A RTC from NXP Semiconductors, featuring I2C interface, suitable for low-power applications. 3. MCP7940M: A RTC from Microchip Technology, also includes EEPROM for user settings. 4. ISL12022: A real-time clock from Intersil, designed for battery-backed operations with a wide range of features. 5. RTC-8564: A highly integrated RTC with multiple capabilities from other manufacturers. Embedded Modules Several development boards and modules incorporate the DS1747 or similar RTCs. These can include Arduino-compatible RTC modules, Raspberry Pi-compatible RTC interfaces, and standalone RTC boards that utilize the DS1747 or its alternatives. Related Q&A 1. Q: Can the DS1747WP-120 keep time during power outages? - A: Yes, the DS1747WP-120 features battery backup, allowing it to maintain accurate timekeeping even when the main power supply is lost. 2. Q: What is the typical power supply voltage for the DS1747WP-120? - A: The device typically operates on a supply voltage of around 5V. 3. Q: Does the DS1747WP-120 support leap year calculations? - A: Yes, the DS1747WP-120 includes built-in leap year handling, allowing it to automatically adjust for February 29. 4. Q: What interface does the DS1747WP-120 use for communication? - A: The DS1747WP-120 uses a parallel interface for communication, which differs from I2C or SPI interfaces used by some other RTCs. 5. Q: Can I program alarms or timers with the DS1747WP-120? - A: Yes, the device supports programmable alarms and timer functions, making it suitable for applications where reminders or scheduled operations are needed. This summary provides an insight into the DS1747WP-120's capabilities, applications, alternative options, and potential questions that may arise when working with this integrated circuit.