X1226S8ZT1

Real Time Clock Overview

The X1226S8ZT1 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It tracks time in hours, minutes, and seconds, and includes day of the week, day, month, and year functionality with leap year compensation. The device supports I2C, 2-wire serial interface communication. It operates within a supply voltage range of 2.7V to 5.5V and a battery supply range of 1.8V to 5.5V. Maximum current consumption during timekeeping is specified as 10µA to 20µA at 2.7V to 5V. The component is housed in an 8-SOIC package with a width of 3.90mm and functions across an operating temperature range of -40°C to 85°C.

Real Time Clock Feature Summary

• Tracks time including hours, minutes, seconds, day of the week, date, and month with automatic leap year adjustment
• Supports two polled alarms for system event triggering
• Utilizes I2C 2-wire serial interface for data communication
• Maintains timekeeping via dedicated battery input for low-power operation

Real Time Clock Applications

• Industrial devices requiring precise timekeeping
• Consumer electronics with calendar functionality
• Systems needing alarm-based event scheduling
• Battery-powered embedded applications

Real Time Clock Procurement Notes

Verify RoHS compliance status carefully, as datasheet information indicates potential discrepancies between lead-free designations and actual regulatory compliance for specific variants. Confirm package type and suffix accuracy against official Renesas documentation before procurement. Check product lifecycle status, as this model may be obsolete or discontinued depending on the manufacturing date. Ensure substitute part numbers are validated for pin compatibility and electrical specifications.

Real Time Clock Selection Notes

Select this component when I2C connectivity and low power consumption are required for timekeeping in space-constrained designs. The 8-SOIC package suits surface-mount assembly processes. Evaluate the need for dual alarms and leap year correction features against application requirements. Consider the operating temperature range suitability for the intended environment. Verify supply voltage compatibility with both main and backup power sources.

Real Time Clock Part Context

The X1226 series from Renesas provides high-reliability real-time clock solutions for various applications. The X1226S8ZT1 variant specifically utilizes tape and reel packaging for automated assembly. It belongs to a family of RTC ICs designed for industrial and consumer markets, offering precise calendar tracking and minimal current draw during standby modes.

Real Time Clock Replacement Considerations

The ISL12026IBZ-T is listed as a similar replacement option. Verify functional equivalence and pinout compatibility before substitution. Check if the alternative meets all electrical and environmental specifications required by the original design.

Real Time Clock FAQ

What is the maximum current consumption during timekeeping?

The maximum current consumption is 10µA to 20µA when operating at supply voltages between 2.7V and 5V.

Does the X1226S8ZT1 support leap year calculation?

Yes, the device includes automatic leap year compensation for accurate date tracking.