DS1302S+ – MAXIM INTEGRATED

Overview

The Maxim Integrated DS1302S+ is a highly integrated Real-Time Clock (RTC) with a built-in calendar and 31 bytes of general-purpose RAM, designed for precise timekeeping in embedded systems. Its key operational characteristic is its extremely low current consumption, typically under 1µA, enabling extended battery backup operation. A critical design consideration when utilizing the DS1302S+ is managing the trade-off between its low power draw and the potential for data corruption during power transitions; careful implementation of its trickle-charge feature and robust power sequencing is paramount to ensure data integrity in volatile environments.

Key Features

• 31 Bytes of General-Purpose RAM
• Low Power Consumption: 0.3µA to 1µA @ 2V-5V
• Wide Operating Voltage: 2V to 5.5V
• 3-Wire Serial Interface
• 8-SOIC (0.209″, 5.30mm Width) Package
• Supports Leap Year and Trickle-Charger Functions

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Time-stamping critical events in data loggers
• Maintaining system uptime in battery-backed embedded controllers
• Calendar synchronization in portable instrumentation
• Real-time event sequencing in industrial automation hardware