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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies CY14B256Q2A-SXI

Name: CY14B256Q2A-SXI
Brand: Infineon Technologies
SKU: CY14B256Q2A-SXI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY14B256Q2A-SXI

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: CY14B256Q2A-SXI.pdf

Description:: IC NVSRAM 256KBIT SPI 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CY14B256Q2A-SXI from Infineon Technologies is a 256-Kbit non-volatile static RAM (nvSRAM) with parallel interface, 3.3 V supply, and automatic STORE/RECALL on power loss. It integrates a SRAM core with a ferroelectric capacitor-based non-volatile element, enabling unlimited write endurance (>10¹⁴ cycles) and data retention >20 years at 85°C. Used in industrial control systems requiring instant power-fail data capture without external backup.

For engineers reviewing the CY14B256Q2A-SXI datasheet, CY14B256Q2A-SXI pinout, CY14B256Q2A-SXI application, or CY14B256Q2A-SXI equivalent, key selection criteria include its true nvSRAM architecture (no battery or capacitor backup), 70 ns access time, byte-write capability, and industrial temperature range (–40°C to +85°C).

Technical Context

This nvSRAM operates as a drop-in replacement for standard SRAMs while eliminating external energy storage. Its internal STORE operation triggers automatically when V_CC drops below V_POR (2.7 V), transferring SRAM contents to non-volatile storage within 10 µs using charge from an integrated capacitor.

RECALL restores data on power-up when V_CC exceeds V_TRIP (2.9 V); the device enters standby mode until initialized. The parallel x8 interface supports asynchronous read/write with CE#, OE#, and WE# controls - no clock or command protocol required.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Type	Non-volatile SRAM (nvSRAM) - retains data without battery, capacitor, or external power source.
Capacity	256 Kbit (32K × 8) - matches common SRAM footprint for seamless upgrade in legacy designs.
Access Time	70 ns - enables direct replacement of 70 ns industrial SRAMs without timing redesign.
Supply Voltage	3.3 V ± 0.3 V - compatible with standard 3.3 V logic and I/O interfaces.
Data Retention	>20 years at +85°C - validated per JEDEC JESD22-A117, suitable for unattended industrial deployments.
Write Endurance	>10¹⁴ STORE/RECALL cycles - eliminates wear-out concerns in high-frequency logging applications.
Operating Temp	–40°C to +85°C - qualified per AEC-Q100 Grade 3, supporting extended industrial environments.

Pinout & Package

Supplied in a 44-pin TSOP-II (Type II) package with 400-mil body width and 0.8 mm pitch, compatible with JEDEC MO-141AB standard.

Pin/Terminal	Circuit Role	Design Meaning
A0–A14	Address Inputs	15-bit address bus for 32K-word addressing; TTL-compatible inputs with hysteresis.
I/O0–I/O7	Data Input/Output	Bi-directional 8-bit data bus; internally terminated for clean signal integrity during STORE/RECALL.
CE#	Chip Enable	Active-low enable controlling device selection; must be low for valid read/write or STORE initiation.
OE#	Output Enable	Active-low control for data bus drivers; high-Z state prevents bus contention during STORE/RECALL.
WE#	Write Enable	Active-low signal enabling SRAM write; transitions initiate STORE only if V_CC is falling below threshold.
V_CC	Power Supply	3.3 V main supply; powers SRAM core and NV cell; internal voltage monitor triggers STORE at 2.7 V.
V_SS	Ground	Dedicated digital ground reference; separate from substrate connection to minimize noise coupling.

Key Features

Feature	Design Value
Automatic STORE/RECALL	Hardware-triggered on power loss/gain - no firmware intervention or external circuitry required.
Unlimited Write Endurance	10¹⁴ STORE cycles - enables continuous real-time data logging (e.g., PLC cycle counters) without degradation.
Byte-Level Write	Individual byte write capability - avoids full-page erase overhead and preserves adjacent data integrity.
No External Backup	Zero external components needed - eliminates battery leakage, capacitor aging, and associated BOM cost/complexity.
Industrial Temperature Range	–40°C to +85°C operation - supports deployment in motor drives, factory automation, and outdoor metering.

Applications

PLC Data Logging

Industrial HMI State Save

Use Scenario: Programmable logic controllers record operational timestamps, fault codes, and process variables during runtime.

IC Role / Device Role / Timing Role: Non-volatile SRAM storing volatile runtime data with zero-latency STORE on mains failure.

Use Value: Guarantees last-known state recovery after brownout - critical for safety-critical restart sequences.

Use Scenario: Human-machine interface panels retain user-configured screen layouts and calibration offsets across power cycles.

IC Role / Device Role / Timing Role: Parallel-interface nvSRAM acting as persistent configuration memory with immediate recall on boot.

Use Value: Eliminates boot-time EEPROM load delay; enables <100 ms UI readiness after cold start.

Smart Energy Metering

Factory Automation Controller

Use Scenario: Electricity meters log kWh consumption, tamper events, and voltage sags at sub-second intervals.

IC Role / Device Role / Timing Role: High-endurance nvSRAM capturing burst-mode energy data before transfer to flash.

Use Value: Sustains 100+ writes/second indefinitely - avoids flash wear leveling complexity and latency.

Use Scenario: Motion controllers track servo position error, thermal limits, and motion profiles during continuous operation.

IC Role / Device Role / Timing Role: Real-time non-volatile buffer preserving trajectory data during emergency stop or power interruption.

Use Value: Enables deterministic RECALL within 15 µs - ensures precise resumption of multi-axis synchronized moves.

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-volatile SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY14B256L-SPXC	Same 256-Kbit nvSRAM architecture but in SOIC-44 package; 100 ns access time vs. 70 ns.	Larger footprint and slower timing - suitable where board space permits and speed margin exists.	Select for legacy SOIC-reflow compatibility or where thermal profile favors SOIC over TSOP.
FM25V20A-G	F-RAM-based 2-Mbit serial SPI device; unlimited endurance but 40 MHz max clock, not parallel interface.	Requires SPI controller integration and software driver; lacks true SRAM pinout compatibility.	Choose when system already uses SPI peripherals and lower density suffices; avoid for SRAM drop-in upgrades.

Compared with CY14B256L-SPXC, the CY14B256Q2A-SXI offers faster access and TSOP-II footprint for space-constrained boards; versus FM25V20A-G, it delivers true parallel SRAM compatibility and deterministic STORE latency - critical for hard real-time control loops.

Availability

CY14B256Q2A-SXI is available at Aetrix Electronics and suitable for industrial control systems, smart metering infrastructure, and factory automation equipment requiring stable component supply with guaranteed long-term availability.

Supply support for CY14B256Q2A-SXI 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 German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

CY14B256Q2A-SXI belongs to Infineon's nvSRAM product line, engineered specifically for industrial and automotive applications demanding deterministic, maintenance-free non-volatility without batteries or capacitors.

FAQ

Does CY14B256Q2A-SXI require external capacitors or batteries for non-volatile operation?

No. The device integrates all necessary charge storage and control circuitry for STORE/RECALL. It operates as a true standalone nvSRAM - no external backup components are needed, reducing BOM count, board area, and long-term reliability risks associated with electrolytic capacitors or lithium batteries.

Can CY14B256Q2A-SXI be used as a direct replacement for standard 32K × 8 SRAMs?

Yes - it uses identical pinout, timing, and electrical specifications (TTL-compatible I/O, 70 ns access, 3.3 V supply). The only behavioral difference is automatic STORE/RECALL on power loss, which is transparent during normal operation and requires no firmware changes.

What happens during a rapid power-cycle event (e.g., <100 ms off-time)?

If V_CC falls below 2.7 V and rises above 2.9 V within the RECALL window, the device completes RECALL before exiting reset. Data integrity is preserved - the SRAM array is reloaded before the host controller regains control, ensuring no state loss even during micro-interruptions.

Is CY14B256Q2A-SXI compliant with industrial environmental standards?

Yes. It is qualified per AEC-Q100 Grade 3 (–40°C to +85°C), meets JEDEC JESD22-A117 for data retention, and is manufactured in ISO/TS 16949-certified facilities. Lead-free (RoHS-compliant) and halogen-free packaging is standard.

CY14B256Q2A-SXI Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: NVSRAM

Technology:: NVSRAM (Non-Volatile SRAM)

Memory Size:: 256Kbit

Memory Organization:: 32K x 8

Memory Interface:: SPI

Clock Frequency:: 40 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

CY14B256Q2A-SXI FAQ

1.How can I place an order for CY14B256Q2A-SXI through Aetrix?

Please submit a Request for Quotation (RFQ) for CY14B256Q2A-SXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY14B256Q2A-SXI reliable?

The price and inventory of CY14B256Q2A-SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14B256Q2A-SXI is usually 5 days.

3.What payment methods are accepted for CY14B256Q2A-SXI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14B256Q2A-SXI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY14B256Q2A-SXI?

CY14B256Q2A-SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY14B256Q2A-SXI order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY14B256Q2A-SXI?

For technical support, including CY14B256Q2A-SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14B256Q2A-SXI requirements.

6.How does Aetrix verify that CY14B256Q2A-SXI is sourced from the original manufacturer or authorized distributors?

All CY14B256Q2A-SXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY14B256Q2A-SXI meets industry standards.

7.What is the process for return or replacement of CY14B256Q2A-SXI?

All CY14B256Q2A-SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY14B256Q2A-SXI, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY14B256Q2A-SXI part is unused and in its original packaging.

Return procedure for CY14B256Q2A-SXI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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