ISL12082IB8Z

Real Time Clock Overview

The ISL12082IB8Z is a low-power real-time clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C serial interface and provides clock/calendar functionality with alarm and timer capabilities. The device operates within a supply voltage range of 2.7V to 5.5V, with battery backup support from 1.8V to 5.5V. It includes automatic leap year correction through 2099 and offers selectable frequency outputs. The component is housed in an 8-lead SOIC package and supports time formats including HH:MM:SS in both 12-hour and 24-hour modes.

Real Time Clock Feature Summary

• Integrated Real-Time Clock/Calendar with automatic leap year correction through 2099
• I2C Serial Interface supporting 400kHz data transfer rate
• Includes Alarm, Timer, Watchdog Timer, and Interrupt functions
• Backup Switching capability for seamless power transition

Real Time Clock Applications

• Utility Meters
• HVAC Equipment
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Point Of Sale Equipment

Real Time Clock Procurement Notes

Verify the End-of-Life (EOL) status before procurement, as the manufacturer has issued discontinuance notifications for this part number. Confirm that current inventory sources are authorized distributors to ensure authenticity. Check for available alternative packages or updated series replacements if long-term supply stability is required for production planning.

Real Time Clock Selection Notes

Select the ISL12082IB8Z when specific alarm and timer functionalities are required alongside standard RTC operations. Ensure the design accommodates the 8-SOIC package dimensions. Verify that the system voltage aligns with the 2.7V to 5.5V operating range. Consider the EOL status and plan for potential migration to newer compatible devices if future production runs are anticipated.

Real Time Clock Part Context

This component belongs to the ISL12082 series of real-time clocks. It shares functional similarities with the ISL1208 but adds timer and watchdog features. The 'IB8Z' suffix indicates the 8-SOIC package variant with lead-free/RoHS compliance. It is designed as a drop-in replacement for legacy RTCs in applications requiring precise timekeeping with additional interrupt capabilities.

Real Time Clock Replacement Considerations

Public documentation lists the ISL12082IB8Z as an obsolete product. No direct pin-compatible substitutes are explicitly confirmed in the provided source material. Designers should evaluate newer Renesas RTC families or generic I2C RTCs with similar feature sets for long-term availability.