Infineon Technologies CY14B116N-Z45XIT

Overview

CY14B116N-Z45XIT 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 QuantumTrap nonvolatile storage. It performs automatic STORE on power-down using an external capacitor (VCAP), supports software/hardware-triggered STORE/RECALL, and operates across –40 °C to +85 °C for industrial embedded control systems requiring persistent memory without battery backup.

For engineers reviewing the CY14B116N-Z45XIT datasheet, CY14B116N-Z45XIT pinout, CY14B116N-Z45XIT application, or CY14B116N-Z45XIT equivalent, key selection criteria include its 45-ns timing, TSOP II 54-pin package, AutoStore capacitor interface (VCAP), dual CE support in TSOP I/FBGA variants, and compatibility with legacy Cypress nvSRAM designs requiring infinite SRAM write cycles and 20-year data retention.

Technical Context

This nvSRAM integrates a standard SRAM array (1024K × 16) with parallel QuantumTrap nonvolatile elements per cell, enabling bit-level STORE/RECALL without external controllers. It uses asynchronous control logic with independent CE1/CE2 inputs in TSOP I and FBGA packages, and supports hardware STORE via HSB pin assertion or power-loss detection through VCAP discharge monitoring.

The device implements three distinct operational modes: active (75 mA), standby (650 µA), and Sleep (10 µA, enabled via ZZ pin in 165-ball FBGA only). Its ×16 configuration uses address pins A0–A19 and bidirectional DQ0–DQ15, with BHE/ BLE byte enables supporting 8-bit sub-word access within the 16-bit bus.

Key Specifications

Pinout & Package

Package: 54-pin thin small-outline package (TSOP II), RoHS-compliant, surface-mount, 0.8 mm pitch, 20.0 mm × 10.0 mm footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY14B116N-Z35XIT, this part trades 10 ns of speed for lower cost and wider timing margin; versus FM16W08-45-TG, it delivers true autonomous STORE without firmware intervention but requires VCAP and has finite STORE cycles.

Availability

CY14B116N-Z45XIT is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, automotive event recording, and telecom infrastructure requiring stable component supply with long-term lifecycle assurance.

Supply support for CY14B116N-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 systems, sensors, and memory solutions for industrial, automotive, and IoT applications.

CY14B116N-Z45XIT belongs to Infineon's nvSRAM product line, designed specifically to replace battery-backed SRAM and EEPROM in mission-critical systems where data persistence during power loss is non-negotiable.

FAQ

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

The VCAP pin supplies hold-up energy during VCC dropout to complete the STORE operation from SRAM to QuantumTrap cells. A 4.7 µF solid tantalum capacitor rated for ≥6.3 V must be connected between VCAP and VSS, placed within 5 mm of the package. This value ensures sufficient charge to sustain STORE for ≥20 ms at minimum VCC (2.7 V) and worst-case temperature (85 °C).

Can CY14B116N-Z45XIT be used as a drop-in replacement for CY14B116L-Z45XIT?

No - CY14B116L-Z45XIT is ×8 organized (2048K × 8), while CY14B116N-Z45XIT is ×16 (1024K × 16). They share identical timing, voltage, and package specs but differ in address/data pin mapping: L-version uses A0–A20/DQ0–DQ7; N-version uses A0–A19/DQ0–DQ15. PCB layout and firmware addressing must be updated.

Does the device support hardware STORE without external circuitry?

Yes - asserting HSB LOW externally initiates immediate STORE; no additional logic is needed. The device also supports fully autonomous STORE on power-down via VCAP discharge detection, requiring only the external capacitor. Both methods execute the same internal STORE sequence with identical timing and reliability.

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

No - Sleep mode (enabled via ZZ pin) is only available in the 165-ball FBGA package variant, as confirmed in the datasheet Pin Definitions table and Figure 6. The 54-pin TSOP II package lacks the ZZ pin entirely and does not implement Sleep mode logic; standby current remains at 650 µA.