ISL12082IUZ-T

Real Time Clock Overview

The ISL12082IUZ-T is a low-power real-time clock/calendar integrated circuit manufactured by Renesas Electronics. It features an I2C bus interface with a maximum data transfer rate of 400 kHz and operates within a supply voltage range of 2.7 V to 5.5 V. The device tracks time in hours, minutes, and seconds and includes calendar registers for date, month, year, and day of the week, accurate through 2099 with automatic leap year correction. It incorporates on-chip oscillator compensation, a single alarm settable to the second, minute, hour, day of the week, day, or month, and intelligent battery backup switching. The component is housed in an 8-lead MSOP package.

Real Time Clock Feature Summary

• I2C Interface: Supports up to 400 kHz data transfer rate.
• Calendar Accuracy: Tracks time through 2099 with automatic leap year correction.
• Oscillator Compensation: On-chip digital capacitor adjustment corrects frequency drift.
• Battery Backup: Intelligent switching between main power and backup source.

Real Time Clock Applications

• Utility Meters
• HVAC Equipment
• Set-Top Boxes and Televisions

Real Time Clock Procurement Notes

Verify current availability status as the ISL12082 series may be subject to discontinuation notices from Renesas. Confirm RoHS compliance details directly with the manufacturer or authorized distributors before procurement. Ensure the specific suffix matches the required package type and tape/reel specifications for the manufacturing line.

Real Time Clock Selection Notes

Select this component when an I2C-connected RTC with high accuracy and oscillator compensation is required. It serves as a direct pin-compatible alternative to Maxim DS13xx devices. Consider the 8-lead MSOP package for space-constrained designs requiring surface-mount technology.

Real Time Clock Part Context

The ISL12082 belongs to the ISL1208 family of low-power real-time clocks. It shares functional similarities with the ISL1208 but offers enhanced features such as additional timer functions. This series is designed for applications requiring precise timekeeping with minimal power consumption.

Real Time Clock Replacement Considerations

The ISL1208 is a compatible substitute with identical pinout compatibility. Verify register mapping differences if migrating from older RTC variants like the DS13xx series.