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Rochester Electronics DS1248W-120+ Environmental and export classification status description

The Maxim Integrated DS1248W-120+ is a highly integrated real-time clock (RTC) and non-volatile memory device. It combines several functionalities that make it valuable in various applications, particularly in monitoring and keeping track of time in embedded systems. Overview - Type: Real-Time Clock (RTC) and non-volatile memory - Features: Built-in SRAM, real-time clock, battery backup functionality - Storage: 64 kbit SRAM, which can retain data during power loss - Voltage: Operates with a supply voltage of 2.5V to 5.5V - Package: Available in a 28-PDIP or 28-SOIC package Functions 1. Real-Time Clock: Provides accurate timekeeping, including hours, minutes, seconds, day, month, and year. 2. Non-volatile Memory: The integrated SRAM allows for data storage that persists even when power is removed. 3. Battery Backup: Automatically switches to battery power to maintain clock timing and memory content during power outages. 4. I2C Communication: Engages with microcontrollers and other ICs via I2C for data transfer, configuration, and timekeeping retrieval. Applications - Consumer Electronics: Used in devices requiring time tracking such as microwaves, alarm clocks, and cameras. - Industrial Equipment: Helps in tracking operational hours and scheduling for machinery. - Telecommunications: Maintains system time for network devices. - Data Loggers: Timestamping of logged data in various measurement applications. - Automotive: Used in dashboard clocks and maintenance scheduling systems. Alternative Components 1. Microchip MCP7940M: Another RTC with built-in SRAM and a battery-backed feature. 2. NXP PCF2123: A low-power RTC with dual alarms and timer functions. 3. Texas Instruments BQ32000: Offers a real-time clock solution with programmable features. 4. Seiko Instruments S-35390A: A high-precision RTC with various power-saving modes. Embedded Modules - Modules and development boards featuring the DS1248W might include additional components for ease of integration into projects. These could include breakout boards that provide necessary pinouts. - Design modules utilizing standard protocols (like I2C) for simple interfacing with microcontrollers (Arduino, Raspberry Pi, etc.). - Custom PCB designs can often be implemented using the DS1248W-120+ for tailored projects, typically aligning with user needs in timing and non-volatile data storage. Related Q&A 1. Q: What is the primary use of the DS1248W-120+? A: The primary use of the DS1248W-120+ is to provide accurate real-time clock functionalities along with non-volatile memory for data storage during power outages. 2. Q: How does the battery backup feature work in the DS1248W-120+? A: The battery backup feature allows the DS1248W-120+ to continue running and maintaining timekeeping even when the primary power supply is disconnected, using a connected backup battery. 3. Q: Can the DS1248W-120+ be integrated with microcontrollers? A: Yes, the DS1248W-120+ can be integrated with microcontrollers via I2C communication, allowing easy data transfer and control for timekeeping functionalities and memory access. 4. Q: What types of applications commonly utilize RTCs like the DS1248W-120+? A: Common applications include consumer electronics, industrial machinery, telecommunications, data logging, and automotive systems. 5. Q: What are some alternatives to the DS1248W-120+ for applications needing a real-time clock? A: Alternatives include Microchip MCP7940M, NXP PCF2123, Texas Instruments BQ32000, and Seiko Instruments S-35390A, each offering varying features suited for application-specific requirements. This overview should give you a solid understanding of the DS1248W-120+ and related concepts.