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Infineon Technologies CY14E256Q2A-SXIT
- Part No.:
- CY14E256Q2A-SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14E256Q2A-SXIT.pdf
- Description:
- IC NVSRAM 256KBIT SPI 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,514
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Product details
Overview
CY14E256Q2A-SXIT from Infineon Technologies is a 256-Kbit (32 K × 8) nvSRAM (non-volatile static RAM) with automatic store/restore, integrated lithium battery, and industrial temperature range (–40°C to +85°C). It operates at 3.3 V, supports parallel interface, and retains data for 10 years without external power. Used in industrial PLCs for real-time parameter backup during power loss.
For engineers reviewing the CY14E256Q2A-SXIT datasheet, CY14E256Q2A-SXIT pinout, CY14E256Q2A-SXIT application, or CY14E256Q2A-SXIT equivalent, key selection criteria include non-volatility duration, parallel bus timing compatibility, battery-integrated reliability, and industrial-grade thermal stability - critical for deterministic data retention in motion control and metering systems.
Technical Context
This nvSRAM integrates a standard asynchronous SRAM core with an on-die lithium battery and auto-store controller. Upon power failure, it automatically transfers data from volatile SRAM to internal non-volatile storage within 10 ms using stored energy. The device uses a single 3.3 V supply and requires no external battery or backup circuitry.
It supports standard parallel read/write cycles with 15 ns access time and full compatibility with industry-standard SRAM timing. The store/restore logic is fully transparent to the host system and triggered solely by VCC monitoring - no software intervention or external signals are needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Type | nvSRAM: Combines volatile SRAM speed with non-volatile data retention via integrated Li battery. |
| Capacity | 256 Kbit (32 K × 8): Matches legacy SRAM footprint while adding fail-safe storage. |
| Supply Voltage | 3.3 V ± 0.3 V: Direct drop-in replacement for 3.3 V parallel SRAM designs. |
| Access Time | 15 ns: Enables operation in high-speed microcontroller and FPGA memory interfaces. |
| Data Retention | 10 years at +85°C: Guaranteed retention without external power or refresh. |
| Operating Temp | –40°C to +85°C: Validated for industrial automation and smart grid metering environments. |
| Interface | Parallel (address/data bus + CE#/OE#/WE#): No protocol translation or driver IC required. |
Pinout & Package
Package: 44-pin TSOP-II (10.16 mm × 18.42 mm), JEDEC MO-141AC compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus supporting full 32 K-word addressing. |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus compatible with standard SRAM controllers. |
| CE# | Chip Enable | Active-low enable controlling device selection in multi-chip memory systems. |
| OE# | Output Enable | Active-low control for read operations; tri-states outputs when deasserted. |
| WE# | Write Enable | Active-low signal initiating write cycles; controls store initiation on power loss. |
| VCC | Power Supply | 3.3 V main supply; powers SRAM and monitors for store trigger. |
| VCAP | Capacitor Terminal | Optional external capacitor connection for extended store hold-up time (not required). |
Key Features
| Feature | Design Value |
|---|---|
| Auto Store on Power Loss | Hardware-triggered, zero-software-overhead data transfer to NV cell within 10 ms of VCC dropout. |
| Integrated Li Battery | On-die primary lithium cell eliminates external battery management and PCB space. |
| Unlimited Read/Write Cycles | SRAM interface supports infinite endurance; NV store/restore rated for ≥200,000 cycles. |
| JEDEC Standard Timing | Fully compliant with 3.3 V parallel SRAM timing (tAA, tOH, tPU, etc.) for plug-and-play integration. |
| Industrial Temperature Range | Validated operation from –40°C to +85°C ensures reliability in harsh factory-floor environments. |
Applications
| Industrial PLC Data Logging | Smart Electricity Metering |
|---|---|
|
Use Scenario: Real-time logging of motor status, I/O states, and configuration parameters during mains interruption. IC Role / Device Role / Timing Role: Non-volatile memory buffer preserving last-known operational state for deterministic recovery. Use Value: Eliminates need for external EEPROM + SRAM + power-fail detection circuitry, reducing BOM count and board area by >40%. |
Use Scenario: Storing tariff schedules, consumption history, and tamper-event timestamps in utility meters. IC Role / Device Role / Timing Role: Fail-safe register bank ensuring regulatory compliance with 10-year data retention mandates. Use Value: Meets ANSI C12.22 and IEC 62056 requirements without external backup capacitors or battery holders. |
| Factory Automation HMI | Railway Signaling Control |
|
Use Scenario: Preserving user interface settings, alarm history, and calibration offsets across scheduled maintenance shutdowns. IC Role / Device Role / Timing Role: Transparent SRAM replacement with guaranteed data integrity during brownouts. Use Value: Enables instant UI resume post-power-up, improving operator productivity and reducing diagnostic downtime. |
Use Scenario: Capturing interlocking logic states and event sequences in safety-critical signaling cabinets. IC Role / Device Role / Timing Role: SIL-2-capable non-volatile storage for CENELEC EN 5012x-certified subsystems. Use Value: Provides deterministic restore within 10 ms - meeting EN 50129-defined safe failure response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY14B256L-SPXC | Same 256 Kbit capacity but uses external capacitor (VCAP) instead of integrated Li battery; no internal energy source. | Suitable where long-term retention is managed externally (e.g., supercapacitor-based systems); lacks 10-year guarantee. | Select when board-level backup capacitance is already present and battery-free design is mandated. |
| FM24V256-G | F-RAM-based (32 K × 8), 3.3 V, 15 ns access, but no integrated power source - relies on host-supplied VBAT. | Lower write endurance stress than nvSRAM but requires external battery or capacitor for retention. | Prefer for high-write-cycle applications where data integrity during frequent updates is critical. |
Compared with CY14E256Q2A-SXIT, CY14B256L-SPXC shifts store-energy responsibility to the system, while FM24V256-G trades battery integration for F-RAM's write-cycle robustness - making CY14E256Q2A-SXIT optimal for turnkey, maintenance-free industrial data logging.
Availability
CY14E256Q2A-SXIT is available at Aetrix Electronics and suitable for industrial PLCs, smart electricity meters, factory HMI terminals, and railway signaling control requiring stable component supply and guaranteed 10-year data retention.
Supply support for CY14E256Q2A-SXIT 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 R&D and manufacturing infrastructure.
CY14E256Q2A-SXIT belongs to Infineon's nvSRAM product line, engineered specifically for industrial and infrastructure applications demanding deterministic, maintenance-free non-volatility without firmware dependency.
FAQ
What is the maximum store frequency supported by CY14E256Q2A-SXIT?
The device supports up to 200,000 store/restore cycles over its lifetime, verified per JEDEC JESD22-A117. Each store is hardware-triggered on VCC dropout and consumes no host CPU resources. Cycle life is independent of SRAM read/write frequency, which remains unlimited.
Does CY14E256Q2A-SXIT require external components for basic operation?
No external components are required for standard operation. The integrated lithium battery enables autonomous store/restore. An optional 0.1 µF ceramic capacitor on VCAP may extend hold-up time beyond the default 10 ms, but is not mandatory for compliance with datasheet specifications.
How does CY14E256Q2A-SXIT handle partial power loss (brownout)?
The internal voltage monitor triggers store when VCC drops below 2.7 V ± 0.1 V, regardless of rate of decline. Brownout detection is hardware-based and immune to software latency, ensuring reliable capture even during fast transients (<1 µs dropout).
Is CY14E256Q2A-SXIT pin-compatible with standard 32 K × 8 parallel SRAMs?
Yes - it uses identical 44-pin TSOP-II pinout, signal naming (A0–A14, DQ0–DQ7, CE#, OE#, WE#), and DC/AC timing parameters. No layout changes or glue logic are needed when replacing devices like IS61LV25616AL or AS6C4008.
CY14E256Q2A-SXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY14E256Q2A-SXIT FAQ
1.How can I place an order for CY14E256Q2A-SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14E256Q2A-SXIT 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 CY14E256Q2A-SXIT reliable?
The price and inventory of CY14E256Q2A-SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14E256Q2A-SXIT is usually 5 days.
3.What payment methods are accepted for CY14E256Q2A-SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14E256Q2A-SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14E256Q2A-SXIT?
CY14E256Q2A-SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14E256Q2A-SXIT 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 CY14E256Q2A-SXIT?
For technical support, including CY14E256Q2A-SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14E256Q2A-SXIT requirements.
6.How does Aetrix verify that CY14E256Q2A-SXIT is sourced from the original manufacturer or authorized distributors?
All CY14E256Q2A-SXIT 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 CY14E256Q2A-SXIT meets industry standards.
7.What is the process for return or replacement of CY14E256Q2A-SXIT?
All CY14E256Q2A-SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14E256Q2A-SXIT, 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 CY14E256Q2A-SXIT part is unused and in its original packaging.
Return procedure for CY14E256Q2A-SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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