DS1678S+T&R

Real Time Clock Overview

The DS1678S+T&R is a Real-Time Clock (RTC) event recorder manufactured by Analog Devices Inc./Maxim Integrated. It logs the time and date of nonperiodic, asynchronous events triggered by the INT pin. The device features a BCD-format RTC/calendar with leap-year compensation and Year 2000 compliance. It supports logging up to 1025 consecutive events in read-only battery-backed memory using a 16-bit elapsed time counter (ETC). Key specifications include an I²C serial interface, 32 bytes of general-purpose NV RAM, and operation within a -40°C to +85°C industrial temperature range. Power supply voltage ranges from 4.5V to 5.5V.

Real Time Clock Feature Summary

• Logs up to 1025 consecutive events in read-only battery-backed memory
• I²C serial interface for communication
• 32-byte battery-backed general-purpose NV RAM
• Programmable event trigger via INT pin edges

Real Time Clock Applications

• Real-time event recording systems
• Industrial monitoring applications requiring timestamped event logs
• Battery-backed data logging solutions

Real Time Clock Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated by the '+' suffix. Ensure ordering suffixes match required packaging formats such as tape and reel. Check current availability status as supply conditions may vary.

Real Time Clock Selection Notes

Select this component when precise timestamping of asynchronous events is required. Consider the three resolution options for the elapsed time counter to balance accuracy against maximum time between events. Verify compatibility with system power supplies and I²C bus requirements. Ensure adequate battery backup support for continuous operation during primary power loss.

Real Time Clock Part Context

This part belongs to the DS1678 series of real-time clock event recorders. The 'S' indicates an SO package, while '+T&R' denotes lead-free/RoHS-compliant construction in tape and reel packaging. It is designed for applications needing reliable event logging with minimal user intervention.

Real Time Clock Replacement Considerations

Consult official documentation for verified substitute part numbers. Cross-reference electrical characteristics and pin configurations before implementation.