Description
Product Overview
The DS12887 from Eastsplend is a dual‑chip Real Time Clock (RTC) solution packaged in a convenient 18‑pin DIP format. Designed for demanding industrial environments, this clock IC offers sub‑second accuracy and a built‑in crystal oscillator that maintains precise time even when power is removed, thanks to its integrated backup battery support. The device includes a full set of calendar registers, alarm functions, and programmable square‑wave outputs, allowing engineers to tailor timing behavior to specific application needs. Its low‑power consumption, typically under 500 µA during active operation and less than 1 µA in standby mode, makes it suitable for battery‑powered or energy‑harvesting designs. The dual‑IC configuration provides redundancy, enabling critical systems to switch seamlessly between chips without loss of time data.
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Technical specifications include a temperature‑compensated crystal oscillator, 32‑bit binary counter, and a programmable square‑wave output that can be set to frequencies ranging from 1 Hz to 32.768 kHz. The device operates over a wide voltage range of 2.0 V to 5.5 V, ensuring compatibility with most microcontroller platforms. Communication is handled via a simple I²C‑compatible interface, allowing straightforward integration with popular MCU families such as ARM Cortex‑M, PIC, and AVR. The DS12887 also supports a century register, extending date handling beyond the year 2099, which is essential for long‑life equipment deployed in remote locations.
Usage
Engineers and system designers frequently incorporate the DS12887 into a variety of industrial and scientific equipment where accurate timekeeping is critical. Typical use cases include data acquisition systems that timestamp sensor readings, programmable logic controllers (PLCs) that schedule automated processes, and networked devices that require synchronized logging for compliance reporting. The robust DIP‑18 package tolerates harsh handling and automated assembly lines, making it a reliable choice for high‑volume manufacturing. Its low‑power profile also suits portable instrumentation, such as handheld diagnostic tools, where battery life is a paramount concern.
In addition to traditional embedded applications, the DS12887 can be employed in IoT gateways that aggregate data from distributed sensors, providing a reliable time base for edge computing tasks. The dual‑IC layout enables designers to implement hot‑swap redundancy, ensuring that a single point of failure does not compromise system uptime. This feature is especially valuable in mission‑critical environments like power grid monitoring, aerospace telemetry, and medical device timing where uninterrupted operation is non‑negotiable.
Why Choose Us
Choosing Eastsplend’s DS12887 means partnering with a manufacturer that prioritizes quality, reliability, and customer support. Each batch of RTCs undergoes rigorous testing for temperature stability, voltage tolerance, and long‑term drift, guaranteeing that the component meets or exceeds industry standards. Our supply chain is backed by a responsive technical support team that assists with schematic design, firmware integration, and troubleshooting throughout the product lifecycle.
We also provide comprehensive documentation, including detailed datasheets, application notes, and reference designs that accelerate development time. For customers requiring custom solutions, Eastsplend offers flexible ordering options, from small prototype quantities to large volume production runs, ensuring that you receive the exact quantity you need without excess inventory. Our commitment to sustainability includes environmentally responsible manufacturing processes and compliance with RoHS directives.
Key Features
- Dual‑chip design delivers built‑in redundancy for mission‑critical timing reliability
- Low‑power operation extends battery life in portable and remote applications
- Integrated crystal oscillator provides sub‑second accuracy across a wide temperature range
- Simple I²C‑compatible interface enables fast integration with any microcontroller platform
- Comprehensive technical support and documentation ensure smooth development and long‑term success
FAQ
What voltage range does the DS12887 support?
The DS12887 operates reliably from 2.0 V up to 5.5 V, making it compatible with most low‑power and standard‑voltage microcontroller systems.
Can the DS12887 maintain time when power is lost?
Yes, the device includes a backup battery input that preserves the calendar and time registers during power outages, ensuring accurate time recovery when power is restored.
How does the dual‑IC configuration improve system reliability?
By providing two identical RTC chips in a single package, the DS12887 allows designers to implement hot‑swap redundancy. If one chip fails, the system can switch to the second chip without losing time data, minimizing downtime.
Is the DS12887 suitable for high‑frequency square‑wave output?
Absolutely. The programmable square‑wave output can be set to frequencies ranging from 1 Hz to 32.768 kHz, supporting a variety of timing and signaling requirements.
What kind of support does Eastsplend offer for integration?
Eastsplend provides detailed application notes, reference schematics, and a dedicated technical support line to assist engineers with hardware design, firmware development, and troubleshooting throughout the product’s lifecycle.
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