ISL1219IUZ-T

Real Time Clock Overview

The ISL1219IUZ-T is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C serial interface and supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS in both 12-hour and 24-hour modes. The device operates within a supply voltage range of 2.7 V to 5.5 V, with a backup battery voltage range of 1.8 V to 5.5 V. It includes 2 bytes of SRAM storage capacity and incorporates a backup switching mechanism. The component is housed in a 10-MSOP package and functions within an operating temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• I2C Serial Interface: Utilizes a 2-wire serial bus for communication.
• Backup Switching: Integrated hardware switch for seamless transition between main power and backup battery.
• Calendar Functions: Supports leap year calculation automatically up to the year 2100.
• Low Power Consumption: Typical current consumption ranges from 4µA to 6µA at 3V to 5V.

Real Time Clock Applications

• Industrial Controls
• Consumer Electronics
• Telecommunications Equipment

Real Time Clock Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official Renesas documentation prior to procurement. Ensure the supplier provides valid traceability for the Renesas/Intersil brand origin. Check for any recent Product Change Notices (PCN) regarding package or material updates.

Real Time Clock Selection Notes

Select this component when an I2C-compatible RTC with integrated backup switching is required. The 10-MSOP package suits space-constrained surface-mount designs. Verify that the system's I2C bus voltage levels are compatible with the 2.7V to 5.5V operating range. Consider the 2-byte SRAM limit if additional non-volatile data storage is needed beyond basic clock registers.

Real Time Clock Part Context

The ISL1219 belongs to the ISL1219 series of real-time clocks from Renesas Electronics. It is part of the broader portfolio of clock and timer ICs designed for precise timekeeping in embedded systems. The 'IUZ' designation typically refers to the industrial temperature range and MSOP package variant.

Real Time Clock Replacement Considerations

The ISL1221IUZ-T is a related model within the same family, offering similar I2C interface and package options. Verify pin compatibility and register mapping differences before substituting. Other ISL12xxx series devices may share functional similarities but require individual datasheet comparison for electrical parameters.