The DS1283S+T is a real-time clock (RTC) chip manufactured by Dallas Semiconductor. This device provides a time-of-day clock/calendar with a programmable alarm and a crystal oscillator. It's designed to keep accurate time even when the main power is off, thanks to an external battery backup. The DS1283S+T is commonly used in various embedded systems and data logging applications where maintaining accurate time is critical.

Applications

• Data loggers
• Industrial control systems
• Point-of-sale (POS) terminals
• Network servers
• Embedded systems
• Medical devices

Features

• Complete real-time clock (RTC) functionality with century byte
• Automatic power-fail detect and switch circuitry
• Programmable alarm output
• Low power consumption
• BCD coded year, month, day, date, hours, minutes, and seconds
• Optional crystal oscillator (32.768 kHz)

Benefits

• Accurate timekeeping ensures data integrity in time-sensitive applications.
• Automatic power-fail detection prevents data loss during power outages.
• Programmable alarm output allows for scheduling and event triggering.
• Low power consumption extends battery life in portable devices.
• BCD coding simplifies interface with microcontrollers.

Additional Details

The DS1283S+T features an integrated oscillator compensation circuit for improved timekeeping accuracy over a wide temperature range. It operates on a supply voltage typically between 2.7V and 5.5V. The device typically uses a 32.768 kHz crystal for accurate timekeeping. It is available in an 8-pin SOIC package. The operating temperature range is usually between -40°C to +85°C. An external battery, typically a lithium coin cell, is required for backup power during power outages.