ISL12022MAIBZ-T

Real Time Clock Overview

The ISL12022MAIBZ-T is a real-time clock (RTC) IC from the ISL12022 series manufactured by Renesas Electronics. It features an I2C serial bus interface and provides calendar and timekeeping functions with a date format of YY-MM-DD-dd and a 24-hour time format. The device includes 128 bytes of battery-backed SRAM for data storage. It operates within a supply voltage range of 2.7 V to 5.5 V and supports a backup switching mechanism. The component is housed in a 20-pin SOIC package and is rated for operation between -40°C and +85°C.

Real Time Clock Feature Summary

• Integrated 128-byte battery-backed SRAM for non-volatile data storage
• I2C serial bus interface for communication
• Automatic leap year correction accurate through 2099
• Intelligent battery backup switching capability

Real Time Clock Applications

• Industrial controls
• Utility meters
• POS equipment
• Medical devices
• Security systems

Real Time Clock Procurement Notes

Verify the specific suffix 'MAIBZ' against the official datasheet to confirm pinout and feature set, as variations exist within the ISL12022 family. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for lead-free plating specifications and ensure the 20-pin SOIC package dimensions match the target PCB footprint requirements.

Real Time Clock Selection Notes

Select this part when 128 bytes of SRAM are required alongside RTC functionality. Ensure the system design accommodates the 2.7 V to 5.5 V operating voltage range. Verify that the I2C bus speed is compatible with the device's maximum frequency. Consider the 20-pin SOIC package size constraints compared to smaller alternatives like the 8-pin SOIC variants if space is limited.

Real Time Clock Part Context

This component belongs to the ISL12022 series of low-power RTCs. It shares core timing and calendar features with other members like the ISL12022IBZ but differs in package configuration and potentially specific pin assignments or enhanced ESD/moisture protection levels indicated by the suffix. It serves as a precise timekeeping solution for embedded systems requiring persistent memory.

Real Time Clock Replacement Considerations

Direct substitutes include other ISL12022 variants such as ISL12022IBZ or ISL12022AIBZ, provided the package type and pinout compatibility are verified. Cross-referencing the specific electrical characteristics and memory size is essential before substitution.