X1228S14IZ

Overview

The X1228S14IZ is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation, belonging to the X1228 family. It provides clock/calendar functionality via an I²C, 2-wire serial interface. The device supports time formats of HH:MM:SS in both 12-hour and 24-hour modes, and date formats of YY-MM-DD-dd. It operates with a main supply voltage of 2.7V to 5.5V and a battery backup supply of 1.8V to 5.5V. Timekeeping current consumption ranges from 10µA to 20µA at 2.7V to 5V. The component is housed in a 14-SOIC package (0.154", 3.90mm width) and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrated RTC with I²C 2-wire serial interface
• Supports alarm, leap year, supervisor, and watchdog timer features
• Dual power supply options: VCC (2.7V–5.5V) and Battery (1.8V–5.5V)
• Available in 14-SOIC surface-mount package

Applications

• Industrial control systems requiring precise timekeeping
• Consumer electronics with calendar functions
• Data logging equipment needing timestamp capabilities
• Automotive infotainment systems

Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status as specifications may vary by production batch. Check lead times for obsolete or end-of-life variants within the X1228 series. Ensure packaging integrity for surface-mount assembly processes.

Selection Notes

Select this model when an I²C interface is required for system integration. Consider the 14-SOIC package dimensions for PCB layout constraints. Evaluate power consumption requirements against the 10µA–20µA timekeeping current specification. Verify compatibility with system voltage levels within the 2.7V–5.5V operating range.

Part Context

The X1228S14IZ is part of the broader X1228 family of real-time clock ICs from Renesas. This family offers various package options including TSSOP and SOIC configurations. The S14 suffix typically denotes the SOIC package variant. Related models include the X1228V14IZ for TSSOP packaging.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for direct replacements or pin-compatible alternatives within the X1228 series.