ISL12028AIB27Z

Real Time Clock Overview

The ISL12028AIB27Z is a Real-Time Clock (RTC) manufactured by Renesas Electronics under the Intersil brand. It features an I2C bus interface and provides calendar and timekeeping functions with a date format of YY-MM-DD-dd and a 24-hour HH:MM:SS time format. The device includes 512 bytes of EEPROM storage capacity. It operates within a supply voltage range of 2.7 V to 5.5 V and supports backup switching for continuous operation during power loss. The component is housed in a 14-pin SOIC package and is rated for industrial temperatures from -40°C to +85°C.

Real Time Clock Feature Summary

• Integrated I2C bus interface for serial communication
• 512-byte EEPROM data storage capability
• Hardware backup switching mechanism for uninterrupted timekeeping
• Industrial temperature range operation (-40°C to +85°C)

Real Time Clock Applications

• Data logging systems requiring persistent timestamping
• Industrial control equipment needing accurate real-time tracking
• Embedded devices utilizing I2C connectivity

Real Time Clock Procurement Notes

Mouser currently reports that this part number is not available for sale in their inventory. The product status is listed as limited availability, which may indicate restricted sales or special factory order requirements. Verification of current stock levels and lead times should be conducted directly with authorized distributors or the manufacturer before procurement planning.

Real Time Clock Selection Notes

Select this component when an I2C-compatible RTC with significant non-volatile memory is required. Ensure the design accommodates the 14-pin SOIC footprint and operates within the specified 2.7V to 5.5V voltage window. Verify that the application environment remains within the -40°C to +85°C operating temperature range.

Real Time Clock Part Context

This part belongs to the ISL12028A series of real-time clocks. It shares functional similarities with other models in the family but is distinguished by its specific pin count and EEPROM size. The 'B27' suffix typically denotes the package type and temperature grade configuration within the Intersil/Renesas naming convention.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Designers should consult official replacement guides or contact the manufacturer for validated cross-references due to the component's limited availability status.