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NXP USA Inc. PCF85263AT/AJ Environmental and export classification status description

The PCF85263AT/AJ is a low-power real-time clock (RTC) that features precise timekeeping with the capability to generate various alarms and interrupts. It is designed to operate in battery-backed systems and is commonly utilized in devices that require accurate time functions beyond the main power supply. Functions - Timekeeping: Maintains real-time clock and calendar functionality (hours, minutes, seconds, day, date, month, year). - Alarm Functions: Provides multiple alarms that can wake up the host microcontroller or a system. - Interrupt Generation: Can signal interrupts to the host system based on various events (alarms, oscillator fail, battery low). - Battery Backup: Operates seamlessly when main power is lost, using a backup battery. - I2C Interface: Communicates with the host over I2C for easy integration with microcontrollers. Applications - Consumer Electronics: Used in clocks, appliances, and other electronic devices that require timekeeping. - Industrial Controllers: Provides time-stamping and scheduling functionalities in automation systems. - Smart Meters: Enables accurate time tracking for energy and utility consumption. - Embedded Systems: Common in products that need time or date features, such as data loggers and timers. - Wearable Devices: Helps maintain functionality in fitness trackers, smartwatches, etc. Alternative Parts Several alternative real-time clock ICs may serve similar purposes: 1. DS3231: A highly accurate RTC with temperature compensation and I2C interface. 2. MCP79410: Features an integrated EEPROM and I2C communication, ideal for battery-backed applications. 3. RTC8564: Similar functionality with a slightly different feature set and compatibility. 4. PCF2129AT: Another NXP alternative that caters to timing applications with integrated alarms. Embedded Modules For prototyping and development, several embedded modules with the PCF85263AT/AJ or similar RTCs are available: - RTC Modules: Breakout boards that integrate the RTC with associated components (capacitors, resistors) for easy interfacing. - Arduino-Compatible Modules: Modules that can be directly used with Arduino development boards for easy RTC integration. - Raspberry Pi Add-ons: RTC modules designed for Raspberry Pi, allowing accurate timekeeping in standalone applications. Related Q&A 1. Q: What is the primary function of the PCF85263AT/AJ? A: The primary function of the PCF85263AT/AJ is to keep accurate time and date, even during power outages, thanks to its battery backup capability. 2. Q: How does the PCF85263AT/AJ communicate with a host microcontroller? A: It communicates with a host microcontroller using the I2C interface, allowing for easy integration into various electronic designs. 3. Q: What applications would benefit from using the PCF85263AT/AJ? A: Common applications include consumer electronics, industrial controllers, smart meters, embedded systems, and wearable devices that require precise timekeeping. 4. Q: Can the PCF85263AT/AJ generate alarms? A: Yes, the PCF85263AT/AJ can generate multiple alarms and interrupts to signal the host system for specific events or schedules. 5. Q: Are there alternatives to the PCF85263AT/AJ? A: Yes, alternatives include DS3231, MCP79410, RTC8564, and PCF2129AT, all serving the function of real-time clock ICs with different features and capabilities.