Maxim Integrated DS1685Q-5 Real-Time Clock

The DS1685Q-5 from Maxim Integrated is a full-featured, year-2000-compliant (Y2K), real-time clock/calendar (RTC) integrated circuit. This RTC is designed to provide precise time and date information for embedded systems, ranging from consumer electronics to industrial applications. With its built-in microprocessor-compatible bus, the DS1685Q-5 is easily integrated into a variety of system architectures, offering a reliable timing solution with a wealth of features.

The device includes a built-in crystal oscillator with a frequency of 32.768 kHz, which serves as the timekeeping element, ensuring high accuracy in time tracking. The DS1685Q-5 also features a programmable alarm, interrupt functions, and a battery backup input, which ensures that timekeeping continues uninterrupted in the event of a main power failure.

Key features of the DS1685Q-5 include:

• Real-time clock tracks seconds, minutes, hours, days, date, month, and year.
• Automatic leap year compensation valid up to 2100.
• 114 bytes of general-purpose, battery-backed NV RAM.
• Programmable square-wave output signal.
• Programmable periodic interrupt for system utility.
• Time-of-day alarm and date alarm for scheduling purposes.
• 4.5V to 5.5V full operation voltage range, suitable for standard 5V logic levels.
• Serial interface for simple integration with microprocessor systems.
• Low power consumption ideal for battery-backed applications.

The DS1685Q-5 is available in a 24-pin EDIP (Extended Dual In-line Package) or LCC (Leadless Chip Carrier), providing flexibility for various hardware design requirements. Its robust feature set and reliability make it an excellent choice for applications such as embedded systems, utility meters, POS terminals, and many other time-sensitive devices.

Maxim Integrated's commitment to quality ensures that the DS1685Q-5 RTC maintains accurate timekeeping and device functionality, contributing to the overall reliability and performance of the systems it is integrated into.