ISL12029IB27AZ

Real Time Clock Overview

The ISL12029IB27AZ is a Real-Time Clock (RTC) and calendar integrated circuit manufactured by Renesas Electronics, formerly Intersil. It features an I2C bus interface for communication and includes 512 bytes of EEPROM storage. The device supports standard date formats (YY-MM-DD-dd) and 24-hour time formats (HH:MM:SS). It operates within a supply voltage range of 2.7 V to 5.5 V and functions across an industrial temperature range of -40°C to +85°C. The component is housed in an SOIC-14 package and utilizes backup switching for continuous operation during power loss.

Real Time Clock Feature Summary

• Integrated I2C bus interface for digital communication
• Includes 512-byte EEPROM for data storage
• Supports alarm, calendar, clock, interrupt, and timer functions
• Operates on 2.7 V to 5.5 V supply with backup switching capability

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping
• Data logging equipment needing non-volatile memory retention
• Consumer electronics with calendar and alarm functionalities

Real Time Clock Procurement Notes

Verify the specific suffix 'B' against official datasheets to confirm package type and temperature grade, as variations exist within the ISL12029 family. Check current availability status, as this part may be subject to limited supply or end-of-life notices from the manufacturer. Ensure compatibility with existing I2C bus protocols and voltage levels before procurement.

Real Time Clock Selection Notes

Select this component when an I2C-compatible RTC with embedded EEPROM is required. Compare pinout and package dimensions (SOIC-14) against PCB layout constraints. Verify that the 512-byte EEPROM capacity meets application data storage needs. Confirm operating voltage and temperature ranges align with system specifications.

Real Time Clock Part Context

This part belongs to the ISL12029 series of real-time clocks. It shares functional similarities with other members like the ISL12027 but differs in package options and specific feature sets. The 'IB' suffix typically denotes a specific package variant and temperature range within the broader product line managed by Renesas/Intersil.

Real Time Clock Replacement Considerations

Direct substitutes include other ISL12029 variants such as ISL12029IV30AZ, provided package and electrical parameters match. Cross-reference with ISL12027 models if fewer pins are acceptable. Always verify register compatibility and physical footprint before replacing.