Description
Product Overview
The DS12887A real‑time clock (RTC) from NINOMAERIA is engineered to provide highly accurate timekeeping for demanding industrial and scientific applications. Packaged in a compact 18‑pin DIP format, each unit occupies minimal board space while delivering robust performance across a wide temperature range of –40°C to +85°C. This lot includes five identical RTC modules, allowing designers to prototype, test, and deploy multiple devices without worrying about component shortages. The chip integrates a battery‑backed crystal oscillator, a programmable square‑wave output, and a full set of calendar registers, making it a versatile solution for systems that require precise date and time tracking. With a low power consumption profile, the DS12887A can operate reliably for years on a small backup battery, ensuring uninterrupted operation even during power outages.
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Usage
Designed for a broad spectrum of environments, the DS12887A excels in applications such as data loggers, programmable logic controllers (PLCs), industrial automation controllers, and embedded computing platforms. Its reliable time‑stamping capability is essential for event logging, process control, and synchronization of distributed systems. The DIP‑18 footprint makes it easy to integrate into both through‑hole and surface‑mount designs, allowing engineers to choose the most suitable mounting method for their board layout. Whether deployed in a factory floor controller, a remote monitoring station, or a rugged handheld device, the RTC maintains accurate time even under temperature extremes and electrical noise. The five‑piece lot is particularly useful for development teams that need to build multiple prototypes or maintain spare parts for field service.
Why Choose Us
Choosing NINOMAERIA means selecting a partner committed to quality, reliability, and customer support. Each DS12887A unit undergoes rigorous testing to meet international standards for timing accuracy and long‑term stability. Our manufacturing process incorporates strict temperature‑controlled soldering and automated inspection, reducing the risk of defects and ensuring consistent performance across every lot. In addition, we provide comprehensive documentation, including detailed datasheets, application notes, and reference designs, to accelerate your development cycle. Our technical support team is available to assist with schematic integration, firmware programming, and troubleshooting, offering personalized guidance that helps you bring your product to market faster. With a proven track record in the timing management market, NINOMAERIA delivers components that you can trust for mission‑critical applications.
Key Features
- Five‑piece lot provides immediate inventory for prototyping and production.
- Compact DIP‑18 package simplifies board layout and reduces assembly cost.
- Battery‑backed crystal oscillator ensures accurate timekeeping for years.
- Wide operating temperature range (‑40°C to +85°C) guarantees reliability in harsh environments.
- Dedicated technical support and comprehensive documentation for seamless integration.
FAQ
What type of battery is recommended for the DS12887A backup power?
The DS12887A is designed to work with a standard 3 V coin cell battery, such as a CR2032. This battery type provides long‑term stability and is easy to replace if needed. For applications requiring extended backup life, a higher‑capacity lithium battery can also be used, provided the voltage does not exceed the specified limit.
Can the DS12887A be used with a crystal oscillator of any frequency?
Yes, the RTC supports a wide range of crystal frequencies, typically from 32.768 kHz up to 50 kHz. Selecting a crystal within this range allows you to balance power consumption and timing precision according to your application’s requirements. The datasheet includes recommended load capacitance values for common crystal frequencies.
Is the DS12887A compatible with both 5 V and 3.3 V logic levels?
The device operates reliably at a supply voltage of 5 V, which is common in many industrial systems. It also tolerates lower voltage levels down to 3.3 V, making it suitable for modern low‑power designs. However, when operating at 3.3 V, ensure that any external pull‑up resistors and interfacing circuitry are also compatible with the reduced voltage.
How does the DS12887A handle leap years and daylight saving time?
The RTC includes built‑in support for leap‑year calculation, automatically adjusting the date at the end of February in leap years. Daylight saving time (DST) is not handled internally; instead, the host microcontroller can read the current time and apply the necessary offset based on regional DST rules. This approach provides flexibility for global deployments.
What warranty and after‑sales service does NINOMAERIA provide?
NINOMAERIA offers a standard one‑year limited warranty covering defects in materials and workmanship. In addition, we provide a responsive after‑sales service that includes technical assistance, replacement of faulty units, and access to firmware updates if applicable. Our goal is to ensure that your experience with the DS12887A is smooth and trouble‑free from purchase through product lifecycle.
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