ISL12020MIRZ-T

Real Time Clock Overview

The ISL12020MIRZ-T is a low-power Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It features an I2C bus interface, 128 bytes of battery-backed SRAM, and embedded temperature compensation for ±5ppm accuracy. The device operates within a supply voltage range of 2.7V to 5.5V and supports battery backup voltages from 1.8V to 5.5V. It includes programmable alarms, daylight saving time settings, and leap year correction. The component is housed in a 20-PowerLFDFN package and is designed for surface mount installation.

Real Time Clock Feature Summary

• I2C Bus Interface with 2-wire serial communication
• 128 Bytes Battery-Backed SRAM Storage
• Embedded Temperature Compensation for ±5ppm Accuracy
• Programmable Alarms and Auto Daylight Saving Time

Real Time Clock Applications

• Industrial Weighing Scales
• Utility Meters
• POS Equipment
• Medical Devices
• Security Systems

Real Time Clock Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Renesas Electronics Corporation or Intersil legacy branding. Ensure the part number matches the exact 20-PowerLFDFN package specification. Check RoHS compliance documentation for lead-free status. Validate that the supplier provides official datasheets for technical reference.

Real Time Clock Selection Notes

Select this component for applications requiring high precision timing with minimal power consumption. The embedded temperature compensation eliminates the need for external calibration in many scenarios. Ensure the system design supports the 2.7V to 5.5V Vcc range and compatible I2C logic levels. Consider the 128-byte SRAM capacity for data logging requirements. Verify compatibility with the 20-PowerLFDFN footprint during PCB layout.

Real Time Clock Part Context

This part belongs to the ISL12020 series of real-time clocks. It shares core functionalities with variants like ISL12020MIRZ and ISL12020MIRZ-T7A, differing primarily in packaging format. The 'T' suffix specifically denotes reel packaging for automated assembly processes. It is distinct from older models like the ISL12026 which uses EEPROM instead of SRAM.

Real Time Clock Replacement Considerations

Direct substitutes include ISL12020MIRZ (tube packaging) and ISL12020MIRZ-T7A (cut tape/reel). Verify pinout and register compatibility before substitution. Ensure the replacement variant meets the same operating temperature range of -40°C to +85°C.