ISL12029IBZ-T

Description：IC RTC CLK/CALENDAR I2C 14SOIC
Series：-

SKU:8548d760a16a Category: Real Time Clocks Brand: Renesas Electronics Corporation

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Product introduction

ISL12029IBZ-T is listed in the Real Time Clock range at ChipApex. The manufacturer field lists Renesas Electronics Corporation. Its product description is IC RTC CLK/CALENDAR I2C 14SOIC. Review the specifications below when checking this part for your BOM.

Real Time Clock specifications for ISL12029IBZ-T

Description：IC RTC CLK/CALENDAR I2C 14SOIC
Series：-
Package：Tape & Reel (TR),Cut Tape (CT)
Mfr：Renesas Electronics Corporation
Type：Clock/Calendar
Features：Alarm, Leap Year, Supervisor, Watchdog Timer
Memory Size：-
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：I2C, 2-Wire Serial
Voltage - Supply：2.7V ~ 5.5V
Voltage - Supply, Battery：1.8V ~ 5.5V
Current - Timekeeping (Max)：10µA ~ 20µA @ 2.7V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：14-SOIC (0.154", 3.90mm Width)
Supplier Device Package：14-SOIC

Real Time Clock datasheet and documents for ISL12029IBZ-T

ISL12029IBZ-T

Real Time Clock Overview

The ISL12029IBZ-T is a low-power Real Time Clock/Calendar IC manufactured by Renesas Electronics Corporation. It features an I²C bus interface, integrated 512x8-bit EEPROM, and intelligent battery backup switching. The device operates with a main supply voltage of 2.7V to 5.5V and a backup supply of 1.8V to 5.5V. Key electrical parameters include a maximum timekeeping current of 20µA at 5.5V and a battery supply current of 1.2µA max at 3.0V. It utilizes an external 32.768kHz crystal and provides automatic leap year correction through 2099.

Real Time Clock Feature Summary

Integrated 512x8-bit EEPROM with BlockLock protection and >2,000,000 cycle endurance
Two non-volatile alarms with periodic interrupt capability
On-chip oscillator compensation with 64-position digital trim for ±30ppm accuracy
CPU Supervisor functions including Power-On Reset and Watchdog Timer

Real Time Clock Applications

Utility Meters
HVAC Equipment
Network Routers, Hubs, Switches, Bridges

Real Time Clock Procurement Notes

Verify the specific VRESET threshold associated with the IB suffix during procurement. Confirm package availability as the standard part may be obsolete while tape-and-reel variants remain in production. Ensure the ordering suffix matches the required reset voltage level for the target application design.

Real Time Clock Selection Notes

Select this variant based on the required VRESET threshold, which is 4.38V typical for the IB suffix. Compare against ISL12029A series if the application requires VBAT greater than VDD operation, as the ISL12029A uses a different power control mode. Verify that the 14-lead SOIC package dimensions fit the PCB layout constraints.

Real Time Clock Part Context

This component belongs to the ISL12029 family of real-time clocks. The 'IB' designation indicates a specific VRESET threshold (approx. 4.38V) and legacy power control settings. The '-T' suffix denotes the Tape and Reel packaging format, distinguishing it from tube-packaged equivalents like the ISL12029IBZ.