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Analog Devices Inc./Maxim Integrated DS17887-3+ Environmental and export classification status description

Overview of DS17887-3+ The DS17887-3+ is a real-time clock (RTC) integrated circuit (IC) manufactured by Maxim Integrated (now part of Analog Devices). This IC is designed to provide precise timekeeping and timing functions for various applications. It typically interfaces with microcontrollers and is commonly used in embedded systems to keep track of time even during power outages due to its battery backup capability. Functions The DS17887-3+ offers several key functions: 1. Real-Time Clock: Keeps track of time (seconds, minutes, hours, day, date, month, and year) with a typical accuracy of ±2 minutes per month. 2. Battery Backup: Allows continued operation during power loss using a backup battery, ensuring timekeeping is maintained. 3. Alarm Functionality: Can be configured to generate alarms based on time, which can trigger interrupts to the host microcontroller. 4. Temperature Compensation: It often includes features for temperature compensation to maintain accurate time over varying temperatures. 5. Count Functions: Supports countdown timers and other time-related functions. 6. Interface: Typically interfaces through I²C (Inter-Integrated Circuit), allowing for easy communication with microcontrollers. Applications The DS17887-3+ is suitable for a variety of applications, including: 1. Consumer Electronics: Used in clocks, timers, home appliances, and other electronic devices requiring precise timing. 2. Computers and Communication Equipment: Provides timing functions for computers, servers, and networking components. 3. Industrial Equipment: Applied in systems that require precise timing, such as manufacturing and automation controls. 4. Medical Devices: Monitors time-critical processes in medical equipment. 5. Automotive Systems: Used in vehicle systems that require real-time clock functions for various monitoring purposes. Alternative Components Several alternatives to the DS17887-3+ in the RTC category include: 1. DS3231: A more advanced RTC with higher accuracy and built-in temperature compensation. 2. PCF8523: A low-power RTC that is also capable of I²C communication. 3. MCP7940N: An RTC that features EEPROM for user data storage alongside its timing capabilities. 4. RP2040: While primarily a microcontroller, it can interface with external RTCs and includes support for timer functions. 5. RTC8564: An I²C interface RTC with similar features but with different characteristics that may suit specific applications better. Embedded Modules Modules incorporating the DS17887-3+ or similar RTCs often include: 1. RTC Modules: Compact boards featuring the DS17887-3+ or compatible RTCs, with additional components for battery backup and interface connectors. 2. Arduino Compatible RTC Shields: Ideal for integration with Arduino platforms, these shields simplify connection and provide easy access to RTC functionalities. 3. Raspberry Pi compatible RTC modules: These modules allow Raspberry Pi systems to have RTC functionalities for accurate time tracking after power loss. Related Q&A 1. Q: How does the DS17887-3+ maintain time during power outages? A: The DS17887-3+ utilizes a backup battery or capacitor to maintain its operation and keep accurate time when the main power supply is lost. 2. Q: What communication protocol does the DS17887-3+ use? A: The DS17887-3+ communicates using I²C (Inter-Integrated Circuit), which allows for easy connection to microcontrollers. 3. Q: Can the DS17887-3+ be used in low-power applications? A: Yes, the DS17887-3+ is designed to operate with low power consumption, making it suitable for battery-powered and energy-efficient applications. 4. Q: Does the DS17887-3+ provide temperature compensation? A: Yes, the DS17887-3+ has features that allow for temperature compensation to enhance its timekeeping accuracy across different temperature ranges. 5. Q: What is the typical accuracy of the DS17887-3+? A: The typical accuracy of the DS17887-3+ is approximately ±2 minutes per month, which is standard for real-time clocks. This overview should provide a comprehensive understanding of the DS17887-3+ and its relevance in the context of integrated circuits, along with alternative components and potential applications.