Cypress Semiconductor Corp CY14E116L-ZS25XI

Overview

CY14E116L-ZS25XI from Infineon Technologies (formerly Cypress) is a 16-Mbit nonvolatile SRAM (nvSRAM) with ×8 organization (2048K × 8), 25-ns access time, 4.5–5.5 V operation, 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 plane memory where volatile SRAM persistence is required.

For engineers reviewing the CY14E116L-ZS25XI datasheet, CY14E116L-ZS25XI pinout, CY14E116L-ZS25XI application, or CY14E116L-ZS25XI equivalent, key selection considerations include its 25-ns timing at 5 V, TSOP II 44-pin package compatibility, AutoStore capacitor (VCAP) interface, HSB busy signaling, and support for hardware STORE via dedicated pin-critical for deterministic power-fail data retention.

Technical Context

This nvSRAM combines a high-speed static RAM array (4096 × 4096) with integrated QuantumTrap nonvolatile elements, enabling infinite SRAM read/write cycles and 1 million STORE cycles to nonvolatile storage. Data retention is guaranteed for 20 years without external power.

STORE operations occur automatically on power-down using energy stored in the external VCAP capacitor, or under software control (via command sequence) or hardware trigger (HSB pin assertion). RECALL restores data to SRAM on power-up or via software command-ensuring zero-latency SRAM access after recovery.

Key Specifications

Pinout & Package

The CY14E116L-ZS25XI is packaged in a 44-pin Thin Small-Outline Package (TSOP II), 338 mil width, with single CE architecture and ×8 data bus configuration. Pin 1 is located at the top-left corner when viewing the top side with marking orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY14E116L-ZS35XI, the -ZS25XI delivers 10 ns tighter timing for high-throughput control loops; versus FM16W08-SG, it provides true hands-off power-fail STORE and 5 V compatibility - critical for retrofitting legacy industrial hardware.

Availability

CY14E116L-ZS25XI is available at Aetrix Electronics and suitable for industrial PLCs, telecom control units, smart energy meters, and railway signaling systems requiring stable component supply, long-lifecycle support, and guaranteed 5 V nonvolatile memory performance.

Supply support for CY14E116L-ZS25XI 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 the nvSRAM product line as part of its industrial and automotive memory portfolio, emphasizing reliability, longevity, and functional safety.

This device belongs to the CY14X116 family of nonvolatile SRAMs designed specifically for applications demanding instant-on memory persistence without batteries, capacitors, or external controllers - targeting industrial automation, infrastructure, and mission-critical embedded systems.

FAQ

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

The VCAP pin connects to an external 4.7 µF tantalum capacitor that stores energy to complete the STORE operation during VCC collapse. This capacitor must be placed within 10 mm of the VCAP pin with low-ESR characteristics; ceramic capacitors are not recommended due to insufficient charge hold time. The device monitors VCC and initiates STORE when voltage drops below 3.5 V, using VCAP to sustain internal circuitry for ~20 ms.

How does the HSB pin function during STORE and RECALL operations?

HSB is an open-drain bidirectional pin: when driven LOW externally, it triggers a hardware STORE; during STORE execution (auto or manual), HSB is actively driven LOW to signal busy status. After completion, it is pulled HIGH internally for tHHHD (≤100 ns), then held HIGH weakly. HSB remains inactive (HIGH) during RECALL - it does not indicate RECALL progress.

Can CY14E116L-ZS25XI operate in a ×16 configuration?

No - the "L" suffix denotes ×8 organization (2048K × 8). Devices with "N" suffix (e.g., CY14E116N) are ×16 (1024K × 16), and "S" suffix devices are ×32 (512K × 32). Pinout, address width (A0–A20 vs. A0–A19), and data bus (DQ0–DQ7 vs. DQ0–DQ15) differ fundamentally; they are not pin-compatible or software-interchangeable.

Is Sleep Mode supported in the 44-pin TSOP II package?

No - Sleep Mode (activated via ZZ pin) is only available in the 165-ball FBGA package, as explicitly stated in the datasheet. The CY14E116L-ZS25XI in 44-pin TSOP II lacks the ZZ pin and associated internal logic; power reduction relies solely on CE deassertion and standby mode (650 µA), not deep sleep (10 µA).