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Rochester Electronics DS1339U-33 Environmental and export classification status description

The DS1339U-33 is a low-power, I2C real-time clock that provides highly accurate timekeeping (typically ±3 ppm) and includes an on-chip oscillator. The device can operate in a wide range of conditions and features battery backup to maintain accurate timekeeping during power failure. Functions: - Real-Time Clock: Keeps track of time (hours, minutes, seconds) and calendar (day, month, year). - I2C Interface: Communicates with microcontrollers or other devices via the I2C protocol. - Battery Backup: Automatically switches to battery power when the main supply is lost, ensuring continuous operation. - Alarms & Interrupts: Can generate alarm signals and interrupts for various time events. - Programmable Square Wave Output: Provides a programmable square wave output for synchronization applications. Applications: - Consumer Electronics: Used in devices like clocks, appliances, and other home electronics. - Industrial Equipment: Timekeeping in equipment and systems that require logging and timestamps. - Telecommunications: In systems requiring accurate timing and synchronization. - Computers & Embedded Systems: Used in various computing applications where timekeeping is necessary. Alternative Parts: - DS1307: A similar I2C RTC, but not as power-efficient as the DS1339U-33. - PCF8563: Another real-time clock that offers I2C interface and battery backup. - MCP79410: An RTC with EEPROM for data storage that includes a battery backup feature. - DS3231: A high-accuracy RTC that has a temperature-compensated oscillator and similar functions. Embedded Modules: - RTC Modules: Several RTC breakout boards are available, such as those featuring the DS1339 or similar RTC ICs. These modules often include additional components like capacitors and battery holders for easy integration into projects. Q&A Section: Q1: What is the primary function of the DS1339U-33? A1: The primary function of the DS1339U-33 is to keep accurate time and date information in applications that require real-time clock functionality. Q2: How does the DS1339U-33 maintain time during power loss? A2: The DS1339U-33 features a battery backup system that allows it to continue keeping time even when the main power supply is interrupted. Q3: What communication protocol does the DS1339U-33 use? A3: The DS1339U-33 utilizes the I2C (Inter-Integrated Circuit) protocol for communication with microcontrollers or other devices. Q4: Can the DS1339U-33 generate alarms? A4: Yes, the DS1339U-33 has a built-in feature that allows it to generate alarms and interrupts for specific time events. Q5: What are some common applications of the DS1339U-33? A5: Common applications include consumer electronics like digital clocks, industrial equipment for logging time, telecommunications systems, and computer or embedded system clocks.