X1227S8

Overview

The X1227S8 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It provides clock/calendar functionality with alarm, leap year, watchdog timer, and monitor features. The device supports I2C and 2-wire serial interfaces for data communication. It operates within a supply voltage range of 2.7V to 5.5V and consumes 10µA to 20µA during timing at these voltages. The component is housed in an 8-SOIC package (0.154" width) and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated Real-Time Clock with Calendar capabilities
• Supports Alarm, Leap Year, Watchdog Timer, and Monitor functions
• Dual interface support: I2C and 2-Wire Serial
• Low power consumption: 10µA ~ 20µA @ 2.7V ~ 5V

Applications

• Systems requiring precise timekeeping and calendar tracking
• Devices utilizing I2C or 2-Wire Serial bus architectures
• Applications needing hardware-based watchdog timer and reset monitoring

Part Context

The X1227S8 belongs to the X1227 series of real-time clocks from Renesas. It is functionally related to the X1226 series but includes additional features such as a watchdog timer and monitor. The 'S8' suffix denotes the 8-SOIC surface-mount package. This component is part of Renesas's portfolio of timing and control ICs designed for embedded systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Renesas documentation for pin-compatible or functionally equivalent alternatives.