ISL1209IU10

Real Time Clock Overview

The ISL1209IU10 is a Real-Time Clock (RTC) manufactured by Renesas Electronics, part of the ISL1209 series. It features an I2C bus interface and supports YY-MM-DD-dd date and HH:MM:SS (24 hr) time formats. The device includes 2 bytes of RTC storage capacity and utilizes backup switching for power management. It operates within a supply voltage range of 2.7 V to 5.5 V and functions at temperatures between -40°C and +85°C. The component is housed in a 10-lead MSOP package.

Real Time Clock Feature Summary

• I2C serial interface for communication
• Integrated calendar and clock functionality with alarm capabilities
• Backup switching mechanism for continuous operation
• Operates on 2.7 V to 5.5 V supply voltage

Real Time Clock Applications

• Systems requiring precise timekeeping via I2C
• Devices needing calendar and alarm event detection
• Embedded systems operating in industrial temperature ranges

Real Time Clock Procurement Notes

Verify the specific suffix 'TK' or 'Z' against the requested model 'ISL1209IU10', as datasheets often list variants like ISL1209IU10Z-TK. Confirm RoHS compliance status and moisture sensitivity level before ordering. Check for availability in cut tape or reel packaging options depending on assembly requirements.

Real Time Clock Selection Notes

Select this component when an I2C-connected RTC with low power consumption and backup switching is required. Ensure the system voltage falls within the 2.7 V to 5.5 V range. Consider the MSOP-10 package size constraints and the -40°C to +85°C operating temperature range for environmental suitability.

Real Time Clock Part Context

The ISL1209 belongs to the ISL1209 family of real-time clocks from Renesas/Intersil. This series typically offers similar core functionalities but may vary in package types (e.g., SOIC, TSSOP) or additional features like SRAM capacity. The IU10 designation specifically refers to the MSOP-10 package variant.

Real Time Clock Replacement Considerations

Check for direct pin-compatible substitutes within the ISL1209 series, such as ISL1209IUZ or ISL1209IBZ, ensuring the package matches. Verify if alternative RTCs from other manufacturers support identical I2C registers and voltage levels.