SPI Real-Time Clock/Calendar IC, 10‑UMAX Package
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The DS1391U-33+TR is a SPI Real-Time Clock (RTC) and Calendar integrated circuit manufactured by Maxim Integrated. This component provides accurate timekeeping, tracking seconds, minutes, hours, day, date, month, and year. It communicates using a Serial Peripheral Interface (SPI) and is supplied in a compact 10-UMAX package.
This real-time clock IC is commonly used in systems requiring precise time and date information, even when the main power is unavailable. Its SPI interface allows for easy integration with microcontrollers and other digital systems.