Analog Devices Inc./Maxim Integrated

DS1344D-18+T&R  

Real Time Clocks ICs

DS1344D-18+T&R Description

The DS1344D-18+T&R is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by Analog Devices Inc./Maxim Integrated. This component is part of the Clock/Timing ICs category and is housed in a 14-TDFN package, available in Tape & Reel (TR) format. The DS1344D-18+T&R is designed for surface-mount applications and offers a wide operating voltage range of 1.71V to 5.5V, making it suitable for a variety of power supply configurations. It also supports a battery supply voltage range of 1.3V to 5.5V, ensuring reliable operation even in low-power environments.

This RTC IC features a robust set of functionalities, including an alarm function, leap year compensation, non-volatile RAM (NVRAM) storage of 96 bytes, square wave output, and a trickle charger for battery backup. The DS1344D-18+T&R supports both 12-hour and 24-hour time formats (HH:MM:SS) and communicates via the SPI interface, providing seamless integration with microcontrollers and other digital systems.

DS1344D-18+T&R Features

• Alarm Functionality: The DS1344D-18+T&R includes an alarm feature that allows for precise scheduling and timing control, making it ideal for applications requiring periodic wake-up or event triggering.
• Leap Year Compensation: This feature ensures accurate timekeeping over extended periods, automatically adjusting for leap years to maintain precise date and time records.
• Non-Volatile RAM (NVRAM): With 96 bytes of NVRAM, the DS1344D-18+T&R provides additional storage for critical data, ensuring data integrity even during power loss.
• Square Wave Output: The square wave output function can be used for clocking other devices or generating timing signals, enhancing the versatility of the IC.
• Trickle Charger: The integrated trickle charger supports battery backup, ensuring continuous operation and data retention in the event of a primary power failure.
• Wide Operating Voltage Range: The DS1344D-18+T&R operates within a voltage range of 1.71V to 5.5V, offering flexibility in power supply requirements.
• SPI Interface: The SPI interface facilitates easy communication with microcontrollers and other digital systems, simplifying integration into various electronic designs.

DS1344D-18+T&R Applications

The DS1344D-18+T&R is well-suited for a range of applications where accurate timekeeping and reliable data storage are essential. Its features make it particularly ideal for:

• Embedded Systems: Providing accurate timekeeping and data storage in embedded devices, ensuring reliable operation over extended periods.
• Industrial Automation: Ensuring precise scheduling and timing control in industrial applications, where reliability and accuracy are paramount.
• Consumer Electronics: Enhancing the functionality of consumer devices by providing accurate time and date information, along with additional storage for critical data.
• Battery-Backed Systems: The trickle charger and wide voltage range make it suitable for battery-backed systems, ensuring continuous operation and data retention during power outages.

Conclusion of DS1344D-18+T&R

The DS1344D-18+T&R is a versatile and reliable Real-Time Clock and Calendar IC, offering a comprehensive set of features and functionalities. Its wide operating voltage range, alarm function, leap year compensation, NVRAM storage, and SPI interface make it a robust solution for a variety of applications. While the product is now obsolete, its legacy continues to influence the design of modern RTC solutions. For existing systems that rely on the DS1344D-18+T&R, its reliability and functionality ensure continued performance and data integrity.

DS1344D-18+T&R Documents

Download datasheets and manufacturer documentation for DS1344D-18+T&R

Datasheets :

DS1343,44      

Other Related Documents :

Tips for Writing Bulletproof Real-Time Clock Control Code      

Application Notes :

Estimating Super Capacitor Backup Time on Trickle-Charger Real-Time Clocks       Selecting a Backup Source for Real-Time Clocks       Oscillator Design Considerations for Low-Current Applications       State Machine Logic in Binary-Coded Decimal (BCD)-Formatted Real-Time Clocks      

PCN Obsolescence/ EOL :

DK OBS NOTICE      

Environmental Information :

Material Declaration DS1344D-18+T&R       Maxim Integrated RoHS Cert       Maxim Integrated REACH