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Rochester Electronics DS1284+ Environmental and export classification status description

Overview of Maxim Integrated DS1284+ The DS1284+ is a real-time clock (RTC) and memory device designed by Maxim Integrated. This integrated circuit integrates a real-time clock with non-volatile SRAM. It features a timekeeping function that maintains real-time information such as hours, minutes, seconds, day, month, and year. The DS1284+ is particularly useful in applications where accurate timekeeping is essential and can retain data even during power outages. Functions of the DS1284+ 1. Real-Time Clock (RTC): Maintains accurate timekeeping while consuming minimal power over an extended period. 2. Non-volatile SRAM: Provides data storage through battery backup, allowing storage even during power outages. 3. Programmable Interrupt: The device can generate periodic interrupts for applications requiring regular updates or data logging. 4. Time-of-Day and Calendar Functions: Stores complex calendar functions, including leap year calculations. 5. Interface Protocol: Communicates with a microcontroller via standard interfaces like I²C or SPI. Applications 1. Consumer Electronics: Used in digital clocks, timers, and home appliances that require accurate timing and memory. 2. Networking Devices: Serves in routers and switches to synchronize logs and maintain time-based operations. 3. Industrial Equipment: Utilized in automation systems where time-stamping is required for operational logging. 4. Embedded Systems: Integrated into microcontroller-based designs that demand real-time monitoring. 5. Medical Devices: Keeps track of time-sensitive operations and logging in medical instrumentation. Alternative Components 1. Microchip MCP7940N: A battery-backed RTC with integrated EEPROM for data storage. 2. NXP PCF8563: A low-power RTC with additional alarm and timer functions. 3. STMicroelectronics M41T00: An RTC with additional non-volatile memory options. 4. Texas Instruments BQ3285A: Provides both RTC and additional general-purpose non-volatile memory. 5. Holtek HT1380: An RTC with an integrated timer and calendar functions. Embedded Modules 1. RTC Breakout Boards: Many manufacturers offer breakout boards using the DS1284+ or similar ICs to simplify integration into projects. 2. Development Kits: Some microcontroller development kits include real-time clock modules for easy experimentation and integration. 3. Arduino-Compatible RTC Shields: Many Arduino shields incorporate RTC modules which may use the DS1284+ or similar components. Related Q&A 1. Q: Can the DS1284+ operate without an external battery? - A: No, the DS1284+ requires an external backup battery to maintain timekeeping when the main power supply is off. 2. Q: How precise is the timekeeping of the DS1284+? - A: The DS1284+ typically has an accuracy of ±2 minutes per month, depending on temperature and load conditions. 3. Q: What types of microcontrollers can interface with the DS1284+? - A: It can interface with most microcontrollers that support I²C or SPI communication protocols, including popular families like Arduino, PIC, and AVR. 4. Q: What is the power consumption of the DS1284+ during operation? - A: The DS1284+ consumes very low power during normal operation, typically a few microamperes, making it suitable for battery-operated devices. 5. Q: Is the data stored in the SRAM of the DS1284+ volatile or non-volatile? - A: The SRAM data is non-volatile as long as a backup battery is connected, allowing it to retain data during power loss.