Infineon Technologies CY14B116L-Z45XIT

Overview

CY14B116L-Z45XIT from Infineon Technologies (formerly Cypress) is a 16-Mbit nonvolatile SRAM (nvSRAM) with ×8 organization (2048K × 8), 45-ns access time, 2.7–3.6 V supply, and TSOP II 44-pin package. It integrates QuantumTrap nonvolatile storage per cell, enabling automatic STORE on power-down using only an external capacitor (VCAP), and supports software/hardware-controlled STORE/RECALL. It serves as drop-in SRAM replacement in industrial control systems requiring persistent data retention without battery backup.

For engineers reviewing the CY14B116L-Z45XIT datasheet, CY14B116L-Z45XIT pinout, CY14B116L-Z45XIT application, or CY14B116L-Z45XIT equivalent, key selection criteria include AutoStore timing under voltage droop, HSB assertion behavior during STORE, sleep mode current (10 µA), VCAP hold-up capacitance requirement, and compatibility with legacy SRAM bus interfaces in PLCs and medical instrumentation.

Technical Context

This nvSRAM combines a fast static RAM array (4096 × 4096) with parallel QuantumTrap nonvolatile elements-each memory cell retains data independently. STORE transfers SRAM contents to nonvolatile storage via internal charge pump; RECALL restores data on power-up or command. Control logic handles CE/WE/OE timing, HSB handshake, and ZZ-driven sleep entry.

The device implements dual-mode STORE: AutoStore triggered by VCC falling below threshold (with VCAP support), and Hardware STORE initiated by pulling HSB low. It supports infinite SRAM read/write cycles and guarantees 1 million STORE cycles to QuantumTrap with 20-year data retention at –40 °C to +85 °C.

Key Specifications

Pinout & Package

Package: 44-pin Thin Small-Outline Package (TSOP II), 400 mil width, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nvSRAM applications.

Compared with STK14CA8-45I-WH1T and FM16W08-45-TG, CY14B116L-Z45XIT uniquely delivers autonomous power-loss STORE with VCAP hold-up, 1M-cycle endurance, and hardware-triggered STORE via HSB-making it optimal for unattended industrial systems where firmware intervention cannot be guaranteed during fault conditions.

Availability

CY14B116L-Z45XIT is available at Aetrix Electronics and suitable for programmable logic controllers, medical imaging subsystems, industrial HMIs, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.

Supply support for CY14B116L-Z45XIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and memory solutions with strong industrial and automotive qualification heritage.

CY14B116L-Z45XIT belongs to Infineon's nvSRAM product line-designed specifically for mission-critical industrial and medical applications demanding zero-data-loss memory persistence without batteries or external supervisors.

FAQ

What is the minimum VCAP capacitance required for reliable AutoStore operation?

The CY14B116L-Z45XIT requires a minimum 4.7 µF tantalum capacitor on the VCAP pin to ensure complete STORE execution during VCC dropout from 3.6 V to 2.7 V. Larger values (up to 10 µF) extend hold-up time margin but increase board area and cost; ceramic capacitors are not recommended due to insufficient capacitance stability under bias.

Does the CY14B116L-Z45XIT support true hardware STORE initiation in TSOP II package?

Yes-the HSB pin functions as both status indicator and STORE initiator in all packages including 44-pin TSOP II. Pulling HSB LOW externally triggers immediate STORE regardless of VCC level, and the device asserts HSB LOW until completion, providing deterministic hardware-controlled nonvolatile save.

Can the CY14B116L-Z45XIT be used as a direct replacement for standard SRAM in existing designs?

Yes-it is pin-compatible and timing-compatible with industry-standard 2048K × 8 SRAMs (e.g., IS61LV2048AL), requiring only addition of VCAP and optional HSB pull-up. No changes to address/data bus routing or timing constraints are needed; software may ignore nvSRAM features entirely if only volatile operation is used.

Is Sleep Mode available on the CY14B116L-Z45XIT in TSOP II package?

No-Sleep Mode (activated via ZZ pin) is only implemented in the 165-ball FBGA package variant per datasheet specification. The CY14B116L-Z45XIT in 44-pin TSOP II does not support ZZ-driven sleep; standby current remains at 650 µA, not 10 µA.