Maxim Integrated DS17487-3

Overview The Maxim Integrated DS17487-3 is a real-time clock (RTC) with an integrated timing and calendar circuit. It is part of the DS17487 family of ICs, which are designed for applications that require accurate timekeeping and calendar functions. The DS17487-3 features a low-power operation mode, making it suitable for battery-operated devices. Functions 1. Real-Time Clock: Keeps track of the current time in hours, minutes, seconds, and provides date functions including year, month, and day. 2. Calendar Functions: Capable of storing date information for leap years and has the ability to handle true binary-coded decimal (BCD) formats for time and date. 3. Low Power Consumption: Designed to operate with minimal power draw, crucial for battery-powered applications. 4. Interfacing: Usually interfaces with microcontrollers or processors via I2C or similar communication protocols. 5. Alarm Functions: Can generate alarms to notify the system at specific times or intervals. Applications - Consumer Electronics: Used in devices like watches, home appliances, and clocks. - Industrial: Implemented in equipment needing precise time schedules, like timing and monitoring systems. - Automotive: Used in dashboard clocks and systems requiring time tracking. - Medical Devices: Integrated into equipment that requires accurate timekeeping for logs and records. - Networking Equipment: Used in routers and switches to maintain timed operations in data processing and logging. Alternative Components 1. Microchip MCP79410: An RTC with EEPROM for additional storage. 2. NXP PCF8563: A highly integrated RTC with low power consumption. 3. Texas Instruments TCN75: An RTC that also incorporates temperature sensing. 4. STMicroelectronics M41T00: A real-time clock with battery backup capabilities. 5. Maxim Integrated DS3231: A more advanced RTC that offers temperature compensation for higher accuracy. Embedded Modules Embedded modules that incorporate the DS17487-3 typically feature microcontrollers along with additional interfaces to easily integrate with existing systems. Some examples include: 1. Arduino RTC Modules: Often include RTC chips like the DS17487 or DS3231 along with breakout boards for easy integration. 2. Raspberry Pi RTC HATs: Boards designed for Raspberry Pi to add real-time clock functionality along with battery backup. 3. IoT Development Kits: Many IoT modules integrate various sensors with RTC capabilities for time-stamped data logging. Related Q&A 1. Question: What is the primary function of the DS17487-3? - Answer: The primary function of the DS17487-3 is to provide real-time clock and calendar functionalities, maintaining accurate time and date information even when the main power is disconnected. 2. Question: How does the DS17487-3 manage power consumption? - Answer: The DS17487-3 operates in a low-power mode to ensure minimal energy usage, making it ideal for battery-operated devices. 3. Question: Can the DS17487-3 be interfaced with microcontrollers? - Answer: Yes, the DS17487-3 can be interfaced with microcontrollers through communication protocols like I2C, allowing it to synchronize and provide timekeeping services. 4. Question: What are some typical applications for the DS17487-3? - Answer: Typical applications include consumer electronics, industrial equipment, automotive systems, medical devices, and network equipment. 5. Question: Why might someone choose the DS17487-3 over other RTCs? - Answer: Someone might choose the DS17487-3 for its specific features like low power consumption, accuracy, and additional calendar functions, particularly for applications where battery life is critical.