Infineon Technologies CY14B116N-Z45XI

Overview

CY14B116N-Z45XI from Infineon Technologies (formerly Cypress) is a 16-Mbit nonvolatile SRAM (nvSRAM) with ×16 organization (1024K × 16), 45-ns access time, 2.7–3.6 V supply, and industrial temperature range (–40 °C to +85 °C). It integrates QuantumTrap nonvolatile storage per cell, enabling automatic STORE on power-down and software/hardware-controlled RECALL-used in mission-critical data logging, industrial PLCs, and telecom control planes where volatile memory loss is unacceptable.

For engineers reviewing the CY14B116N-Z45XI datasheet, CY14B116N-Z45XI pinout, CY14B116N-Z45XI application, or CY14B116N-Z45XI equivalent, key selection considerations include its AutoStore capacitor interface (VCAP), HSB hardware store-busy signaling, dual CE support in TSOP I/FBGA packages, and compatibility with legacy SRAM bus timing while preserving data without external battery or EEPROM backup.

Technical Context

This nvSRAM combines a high-speed 45-ns SRAM array with integrated QuantumTrap nonvolatile elements-each memory cell retains data independently. STORE transfers data from SRAM to nonvolatile storage via hardware (HSB pin), software command, or automatic power-loss detection using VCAP; RECALL restores data on power-up or via software.

It supports three data widths (×8/×16/×32), but CY14B116N is specifically ×16-organized with A0–A19 addressing and DQ0–DQ15 I/O. The device implements Sleep mode (via ZZ pin) only in 165-ball FBGA variants-not in this TSOP II package-and uses dual CE logic in TSOP I and FBGA packages, while TSOP II uses single CE.

Key Specifications

Pinout & Package

Package: 54-pin Thin Small-Outline Package Type II (TSOP II), RoHS-compliant, surface-mountable with 0.8 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STK14CA8-45I and FM16W08-45-TG, CY14B116N-Z45XI uniquely delivers ×16 native interface, deterministic HSB-triggered STORE, and seamless VCAP-powered AutoStore-making it optimal for industrial and avionics designs requiring zero-failure data capture without external supervision.

Availability

CY14B116N-Z45XI is available at Aetrix Electronics and suitable for industrial PLCs, telecom control plane modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY14B116N-Z45XI 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 acquired Cypress Semiconductor in 2020 and maintains its nvSRAM portfolio-including QuantumTrap-based products-for industrial, automotive, and communications markets.

CY14B116N belongs to the Cypress nvSRAM product line, designed specifically to replace battery-backed SRAM in systems demanding guaranteed data retention during uncontrolled power loss-without compromising SRAM speed or bus compatibility.

FAQ

What is the function of the VCAP pin, and what capacitor value is required?

The VCAP pin connects an external tantalum or ceramic capacitor (4.7 µF ±20%, rated ≥6.3 V) that supplies energy during VCC dropout to complete the STORE operation. This capacitor must be placed within 5 mm of VCAP/VSS pins per layout guidelines; insufficient capacitance causes STORE failure and data loss. No charging circuitry is internal-the capacitor self-charges via VCC through an internal diode.

How does the HSB pin operate during a STORE sequence?

HSB is an open-drain output that goes LOW when a STORE begins (hardware or software-initiated) and returns HIGH upon completion. After STORE finishes, it's driven HIGH for tHHHD (≤100 ns) with full drive strength, then held HIGH weakly by an internal pull-up. External pull-up is optional but recommended for noise immunity in noisy industrial environments.

Can CY14B116N-Z45XI be used in place of standard SRAM without firmware changes?

Yes-pinout and timing are fully SRAM-compatible for read/write operations. However, firmware must initialize the device and manage STORE/RECALL if deterministic nonvolatility is required. For passive AutoStore only, no firmware change is needed beyond ensuring VCAP is correctly installed and VCC ramp rates meet datasheet min/max slew specifications.

Is Sleep mode supported on CY14B116N-Z45XI in the 54-pin TSOP II package?

No-Sleep mode (activated via ZZ pin) is only implemented in the 165-ball FBGA package variant. The 54-pin TSOP II package (CY14B116N-Z45XI) does not include ZZ functionality; standby current remains at 650 µA, and no deeper power state is available.