X1227S8-2.7

Overview

The X1227S8-2.7 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It provides timekeeping functions including clock/calendar, alarms, leap year compensation, and watchdog timer capabilities. The device supports I2C and 2-wire serial interfaces for communication. It operates within a supply voltage range of 2.7V to 5.5V and features a low current consumption of 10µA to 20µA at 2.7V to 5V. The component is housed in an 8-SOIC package with a width of 3.90mm and is rated for industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Integrated Real-Time Clock with Calendar functionality supporting HH:MM:SS and YY-MM-DD-dd formats
• Supports I2C and 2-Wire Serial interfaces for system connectivity
• Includes alarm, leap year, monitor, and watchdog timer features
• Operates on a single supply voltage of 2.7V to 5.5V

Applications

• Industrial control systems requiring precise timekeeping
• Data logging equipment needing calendar and timestamping
• Consumer electronics with battery backup requirements
• Embedded systems utilizing I2C communication buses

Procurement Notes

Verify the exact suffix designation, as the provided model lacks the 'I' often found in industrial grade variants (e.g., X1227S8IZ-2.7). Confirm availability status as older Renesas RTC models may be discontinued or subject to last-time-buy notices. Ensure the specific package tolerance matches the design requirements for the 8-SOIC footprint.

Selection Notes

Select this component when both I2C and 2-Wire compatibility is required. Verify that the 2.7V minimum supply voltage aligns with the system's power rails. Check if the industrial temperature range (-40°C to 85°C) is necessary; if not, commercial grade options might be available. Ensure the 8-SOIC package fits the PCB layout constraints.

Part Context

This part belongs to the X1227 series of real-time clocks from Renesas. It is functionally similar to the X1227S8IZ-2.7 but may differ in temperature rating depending on the specific suffix. The series is designed for applications requiring non-volatile timekeeping with minimal power consumption.

Replacement Considerations

Publicly confirmed substitute part numbers are not available for this specific model variant. Cross-reference with the X1227S8IZ-2.7 if industrial temperature rating is required, but verify pinout and electrical specifications carefully.