Maxim Integrated DS12887 Real-Time Clock
The DS12887 from Maxim Integrated is a self-contained Real-Time Clock (RTC) with an integrated microelectronic circuit that maintains accurate time and date information. This robust RTC module is a successor to the popular DS1287 and offers a multitude of features making it an ideal choice for applications that require reliable timekeeping, even in the absence of power.
The DS12887 integrates a quartz crystal and a lithium battery, which allows it to continue timekeeping operations for over a decade in the absence of external power. Its comprehensive feature set includes a programmable alarm, a calendar, and a programmable square-wave output, making it highly adaptable to complex timing requirements.
Key Features:
- Fully Integrated RTC: Includes oscillator, microprocessor, and battery, enabling timekeeping even when the main power is off.
- Non-Volatile Memory: 114 bytes of NV RAM are provided for storage of critical data that must be preserved across power cycles.
- Programmable Interrupts: Offers periodic or yearly interrupt generation for various application needs.
- BCD or Binary Time Representation: Users can choose between Binary-Coded Decimal (BCD) or binary modes for the clock and calendar functions.
- Daylight Saving Time Option: Automatic adjustment for Daylight Saving Time can be programmed into the device.
- Durable: The DS12887 is designed to operate in harsh environments and has a wide temperature range, making it suitable for industrial applications.
With its simple parallel interface, the DS12887 can be easily interfaced with microprocessors or microcontrollers, facilitating seamless integration into existing designs. The device is encapsulated in a 24-pin EDIP (Encapsulated Dual Inline Package) or a 24-pin SOIC (Small Outline Integrated Circuit), providing options for different mounting preferences.
Whether it's for embedded systems, industrial controls, or any application where accurate timekeeping is paramount, the Maxim Integrated DS12887 Real-Time Clock is a reliable and versatile choice that engineers and designers can trust to maintain time integrity.
