The DS1305EN+T from Maxim Integrated is a serial alarm real-time clock (RTC) that provides a comprehensive timekeeping solution for a wide array of applications. This integrated circuit is designed to maintain accurate time and date information, ranging from seconds to years, and includes additional features such as dual programmable alarms and a temperature-compensated crystal oscillator for enhanced stability and accuracy.

Key Features

• Real-Time Clock/Calendar: Tracks time with seconds, minutes, hours, days, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year.
• Dual Programmable Alarms: Allows users to set two separate alarms that can be programmed to trigger on a once-per-second, once-per-minute, once-per-hour, or once-per-day basis.
• Serial Interface: Features a serial interface that facilitates communication with microcontrollers or other digital systems through a simple serial protocol, making it easy to integrate into existing designs.
• Temperature Compensation: Includes a temperature-compensated crystal oscillator that ensures high accuracy over a wide temperature range, making it suitable for temperature-sensitive applications.
• Battery Backup Input: Comes with a backup input that allows the device to maintain timekeeping operations even when the main power supply is interrupted, ensuring consistent performance and reliability.

Applications

The DS1305EN+T is ideal for applications that require precise timekeeping and scheduling capabilities, such as:

• Data loggers
• Telematics
• Industrial equipment
• Handheld devices
• Medical devices
• Security systems

Technical Specifications

The device operates on a voltage range of 2.0V to 5.5V and is available in a 20-pin (300-mil) SO package. Its low power consumption and wide operating temperature range from -40°C to +85°C make it a versatile choice for battery-powered and industrial-grade applications.

With its robust feature set and Maxim Integrated's reputation for quality, the DS1305EN+T is a reliable and efficient choice for designers looking to incorporate an RTC with alarm functions into their systems.