Maxim Integrated DS12C885 Real Time Clock

The DS12C885 is a highly integrated real-time clock (RTC) module from Maxim Integrated that provides a comprehensive timekeeping solution for a wide range of applications. This RTC is a drop-in replacement for the industry-standard DS12885 and is designed to maintain accurate time and date information, featuring a built-in crystal oscillator and battery backup capabilities.

This device comes with a multitude of features that make it an essential component for systems requiring reliable timekeeping. It includes 114 bytes of NV SRAM, which allows users to store data that must be preserved during power loss. The DS12C885 operates over a wide temperature range and has an automatic power-fail detect and switch circuitry that ensures seamless transitions to battery backup.

Key features of the DS12C885 include:

• Multi-Century Calendar: The RTC keeps track of seconds, minutes, hours, days, date, month, and year information. It even accounts for leap years up to the year 2099.
• Programmable Alarm: It offers a programmable alarm function that can be set to trigger on seconds, minutes, hours, day of the week, date, or month.
• Programmable Interrupt: This feature allows for periodic or one-time interrupts to be generated, providing flexibility for various application requirements.
• Integrated Crystal Oscillator: The built-in crystal oscillator ensures stable timekeeping and reduces the number of external components required.
• Battery Backup: The DS12C885 has a battery-backed non-volatile (NV) RAM and timekeeping operation, which means that data and time settings are preserved in the absence of power.
• Simple Interface: It uses a simple multiplexed byte-wide interface, compatible with most microprocessors and microcontrollers.

The DS12C885 is an ideal solution for applications such as embedded systems, utility meters, point of sale (POS) terminals, and network servers, where maintaining accurate time is crucial. Its robust feature set and straightforward integration make it a popular choice for designers looking to add reliable timekeeping functionality to their projects.

For detailed information, technical specifications, and application support, users can refer to the comprehensive datasheet available on the Maxim Integrated website.