The DS1486-120+ from Maxim Integrated is a robust, full-function timekeeper RAM designed to provide a comprehensive solution for system timekeeping and memory requirements. This product is an integrated package that combines a wealth of features including a real-time clock, alarm, watchdog timer, battery-backed nonvolatile (NV) RAM, power-fail control, and a microprocessor monitor.

Key Features

• Integrated Real-Time Clock (RTC): The DS1486-120+ features a highly accurate RTC with calendar functionality, ensuring precise time and date tracking over a wide temperature range.
• Watchdog Timer: A built-in watchdog timer helps to reset the system in case of a software fault or other malfunction, enhancing system reliability.
• Battery-Backed NV RAM: The device includes 128k x 8 bits of NV RAM, which is maintained by an onboard lithium battery. This ensures data retention without external power for the long term.
• Microprocessor Monitor: This feature provides support for microprocessor-based systems by monitoring the supply voltage and asserting a reset if necessary.
• Power-Fail Control: The DS1486-120+ includes a power-fail control circuit that automatically switches to the battery when external power is lost, ensuring uninterrupted operation.

Applications

The DS1486-120+ is ideal for a variety of applications that require reliable timekeeping and data storage through power cycles. These applications include industrial systems, embedded computing, telecommunications, and any other systems that need to maintain accurate time or preserve critical data during power loss.

Technical Specifications

Operating within a voltage range of 4.5 to 5.5 volts and a temperature range of -40°C to +85°C, the DS1486-120+ is a versatile component that ensures stable performance across different environments. The device is provided in a 32-pin EDIP (Encapsulated Dual Inline Package) or surface-mount package, making it suitable for a wide range of PCB layouts.

Ordering Information

The DS1486-120+ is available for order through Maxim Integrated's distribution network. Detailed datasheets and additional resources can be accessed online to assist with integration and design considerations.