CY14B101LA-ZS45XI

Memory IC Overview

The CY14B101LA-ZS45XI is a 1-Mbit (128 K × 8) non-volatile static RAM utilizing QuantumTrap technology. It features a 45 ns access time and operates on a single 3 V power supply within the 2.7 V to 3.6 V range. The device supports infinite read/write cycles for SRAM data and up to 1 million STORE cycles to nonvolatile elements, with 20-year data retention. It includes automatic STORE on power-down via a VCAP capacitor and hardware/software controlled STORE/RECALL functions.

Memory IC Feature Summary

• Integrates fast SRAM with QuantumTrap nonvolatile memory cells for seamless data preservation.
• Provides hands-off automatic STORE operation during power loss using an external capacitor.
• Supports software-initiated STORE and RECALL sequences for manual data management.
• Ensures data integrity by inhibiting writes during low voltage conditions.

Memory IC Applications

• Industrial control systems requiring persistent configuration storage
• Medical devices needing reliable data retention without battery backup
• Automotive electronics demanding high endurance and reliability

Memory IC Procurement Notes

Verify the specific suffix 'ZS45XI' corresponds to the 45 ns speed grade, TSOP-II-44 package, and industrial temperature range. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the ordering code matches the exact pinout and electrical specifications defined in the official Infineon datasheet.

Memory IC Selection Notes

Select this component when infinite SRAM write endurance is required alongside nonvolatile data retention. It serves as a drop-in replacement for standard SRAM where power loss protection is critical. Consider the VCAP capacitor requirement for AutoStore functionality and ensure the 45 ns access time meets system timing constraints.

Memory IC Part Context

This part belongs to the CY14B101LA/CY14B101NA family of 1-Mbit nvSRAMs. Originally developed by Cypress Semiconductor, it is now manufactured and supported by Infineon Technologies. The LA variant specifically denotes the 8-bit data bus width organization.

Memory IC Replacement Considerations

Direct substitutes include other CY14B101LA variants with different speed grades or packages, such as CY14B101LA-ZS25XI. Cross-family replacements from other manufacturers require careful verification of pinouts, voltage levels, and STORE/RECALL mechanisms.

Memory IC FAQ

How is the automatic STORE operation triggered?

AutoStore is initiated automatically when the VCC voltage drops below the VSWITCH threshold, provided a capacitor is connected to the VCAP pin to supply power for the operation.

What is the role of the HSB pin?

The Hardware STORE Busy (HSB) pin indicates when a STORE operation is in progress. Driving it LOW initiates a hardware STORE cycle, and it remains LOW until the operation completes.