CY14B101K-SP25XI

Memory IC Overview

The Infineon CY14B101K-SP25XI is a 1 Mbit (128K x 8) nvSRAM integrated with a Real Time Clock. It utilizes QuantumTrap technology for nonvolatile storage, offering infinite read/write cycles and up to 200,000 store cycles. The device operates on a single 3V supply within a 2.7V to 3.6V range. Key specifications include a 25 ns access time, 48-pin SSOP package, and industrial temperature support from -40°C to +85°C.

Memory IC Feature Summary

• Integrates a full-featured Real Time Clock with leap year tracking and programmable alarms.
• Supports automatic STORE operations during power-down using an external capacitor.
• Includes a watchdog timer and interrupt capabilities for process control.
• Provides hardware and software-initiated data preservation mechanisms.

Memory IC Applications

• Industrial systems requiring precise timekeeping and data retention
• Embedded controllers needing reliable nonvolatile memory
• Battery-powered devices utilizing RTC backup functions

Memory IC Procurement Notes

Verify the specific suffix 'SP' against official documentation to confirm pinout and package variations. Confirm RoHS compliance status as required by your manufacturing standards. Ensure the design accounts for the 48-pin SSOP footprint and thermal requirements. Check for any obsolescence notices or lifecycle changes directly from the manufacturer before finalizing procurement plans.

Memory IC Selection Notes

Select this component when both high-speed SRAM performance and accurate timekeeping are required in a single package. The integrated RTC eliminates the need for separate clock chips. Consider the 200K cycle endurance limit for frequent nonvolatile writes. Evaluate the VCAP capacitor requirement for AutoStore functionality versus battery backup options for the RTC section.

Memory IC Part Context

This part belongs to the Cypress/Infineon CY14B101K family of nvSRAMs. It combines standard static RAM with nonvolatile QuantumTrap cells. The integration simplifies board design by merging memory and timing functions. It serves as a drop-in replacement for certain legacy SRAMs while adding RTC capabilities.

Memory IC Replacement Considerations

The datasheet notes pin compatibility with the STK17TA8. Verify electrical characteristics and register maps match before substitution. No other direct substitute part numbers are confirmed in the provided source material.

Memory IC FAQ

How is the Real Time Clock powered during primary power loss?

The RTC can be backed up by either a capacitor connected to the VRTCcap pin or a battery connected to the VRTCbat pin. The device switches to the selected backup source when VCC drops below the switch voltage.

What is the maximum number of nonvolatile store cycles supported?

The device supports up to 200,000 STORE cycles. Read and write cycles to the SRAM portion are infinite.

How does the AutoStore feature operate?

AutoStore automatically transfers data from SRAM to nonvolatile memory when the VCC voltage drops below a threshold. This is enabled by default and requires a capacitor on the VCAP pin to provide temporary power for the transfer.