X1288S16I

Overview

The X1288S16I is a Real Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It combines clock/calendar functionality with EEPROM storage and CPU supervision capabilities. The device communicates via an I2C, 2-Wire Serial interface. It is housed in a 16-SOIC package with a width of 0.295 inches (7.50mm). The component tracks time including hours, minutes, seconds, hundredths of a second, day of the week, day, month, and year.

Feature Summary

• Tracks real-time data including hours, minutes, seconds, and hundredths of a second alongside calendar information such as day, month, and year.

Applications

• Clock/Calendar systems
• CPU Supervisor applications

Procurement Notes

Verify the specific suffix to confirm voltage rating and tape-and-reel configuration. Confirm the 16-SOIC package dimensions match the design footprint. Ensure I2C bus compatibility with the host microcontroller. Check for any obsolescence notices from Renesas.

Selection Notes

Select this part when a combined RTC, EEPROM, and supervisor function is required in a single package. Consider the I2C interface constraints and SOIC package availability. Evaluate if the integrated memory size meets system logging needs.

Part Context

This component belongs to the X1288 family of mixed-signal peripherals. Variants like X1288S16I-2.7T1 indicate different supply voltage thresholds or packaging formats. The series integrates timing, non-volatile storage, and system monitoring functions.

Replacement Considerations

Check for direct pin-compatible alternatives within the X1288 series that offer updated voltage specifications or packaging options. Verify functional equivalence regarding EEPROM capacity and RTC accuracy before substitution.

FAQ

What communication interface does the X1288S16I use?

It uses an I2C, 2-Wire Serial interface for data exchange.

Does the X1288S16I include a CPU supervisor?

Yes, the datasheet identifies it as a Real Time Clock/Calendar/CPU Supervisor with EEPROM.