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Infineon Technologies CY14E256LA-SZ25XI
- Part No.:
- CY14E256LA-SZ25XI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY14E256LA-SZ25XI.pdf
- Description:
- IC NVSRAM 256KBIT PAR 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,436
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Product details
Overview
CY14E256LA-SZ25XI from Infineon Technologies (formerly Cypress) is a 256-Kbit (32 K × 8) nonvolatile static RAM with QuantumTrap technology, operating at 5 V ±10%, featuring 25 ns access time, industrial temperature range (–40°C to +85°C), and dual-package support (44-pin TSOP II / 32-pin SOIC). It serves as drop-in SRAM replacement with automatic power-loss data retention in embedded controllers and industrial data loggers.
For engineers reviewing the CY14E256LA-SZ25XI datasheet, CY14E256LA-SZ25XI pinout, CY14E256LA-SZ25XI application, or CY14E256LA-SZ25XI equivalent, key selection criteria include STORE/RECALL control modes (hardware/software/autostore), VCAP capacitor interface requirements, HSB busy signaling, infinite SRAM read/write endurance, and 20-year nonvolatile data retention under industrial thermal stress.
Technical Context
The CY14E256LA-SZ25XI integrates parallel SRAM and QuantumTrap nonvolatile cells per bit, enabling simultaneous STORE (SRAM→nonvolatile) and RECALL (nonvolatile→SRAM) operations. Its architecture supports three STORE triggers: autostore on VCC dropout below VSWITCH (2.7 V), hardware STORE via HSB pin assertion, and software STORE via six-address read sequence.
During STORE, the device uses charge stored on the external VCAP capacitor (0.1 µF recommended) to complete data transfer without external power. RECALL occurs automatically on power-up when VCC exceeds VSWITCH, or on-demand via software sequence, with HSB signaling active-low busy status throughout both operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 256 Kbit (32 K × 8), directly replaceable for standard 32-KB SRAM sockets without address decoding changes. |
| Access time | 25 ns - enables direct interfacing with 40-MHz microcontrollers without wait states. |
| Supply voltage | 5 V ±10% - compatible with legacy 5-V logic families and industrial power rails. |
| Data retention | 20 years at +85°C - validated for long-term unpowered storage in remote telemetry nodes. |
| STORE endurance | 1 million cycles - sufficient for daily logging in industrial PLCs over 27 years. |
| Operating temperature | –40°C to +85°C - qualified for deployment in outdoor metering and factory-floor automation. |
| VCAP capacitor | 0.1 µF ceramic - provides minimum 20 ms hold-up time for full STORE completion during brownout. |
Pinout & Package
Available in 44-pin TSOP II (Type II, 10.16 mm × 18.42 mm) and 32-pin SOIC (10.29 mm × 19.18 mm) packages. Pin compatibility maintained across both variants for board-level interchangeability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address input | 15-bit address bus supporting full 32-KB addressing; no A15/A16 required due to fixed density. |
| DQ0–DQ7 | Bidirectional data I/O | 8-bit parallel data path; tri-stated when OE HIGH or during STORE/RECALL to prevent bus contention. |
| WE, CE, OE | Control inputs | Standard SRAM control timing - CE/WE LOW initiates write; CE/OE LOW initiates read; all HIGH disables memory access. |
| HSB | Open-drain I/O | Active-low busy indicator during STORE/RECALL; also accepts external LOW pulse to trigger hardware STORE. |
| VCAP | Power supply terminal | Connects to 0.1 µF capacitor; internal regulator charges it from VCC; powers STORE operation during VCC loss. |
| VSS, VCC | Power pins | Single-supply operation; VSS must be low-impedance ground plane connection to ensure reliable STORE timing. |
Key Features
| Feature | Design Value |
|---|---|
| Hands-off AutoStore on power-down | Eliminates firmware intervention for data preservation during unexpected power loss - requires only VCAP capacitor. |
| Software STORE/RECALL control | Enables deterministic, timed nonvolatile updates via six-address read sequence - avoids reliance on power-event detection. |
| Hardware STORE via HSB pin | Allows external controller to initiate STORE on command (e.g., after critical sensor measurement) with precise timing control. |
| QuantumTrap cell architecture | Delivers 20-year data retention at +85°C without refresh - verified per JEDEC JESD22-A117 reliability testing. |
| Infinite SRAM read/write cycles | Supports continuous real-time data buffering (e.g., ring buffers in motion controllers) without wear-out concerns. |
Applications
| Industrial Data Logger | PLC Memory Backup |
|---|---|
Use Scenario: Continuous timestamped sensor readings stored in volatile buffer, preserved on power failure. IC Role / Device Role / Timing Role: Nonvolatile SRAM providing seamless STORE on brownout and RECALL on recovery - acts as persistent working memory. Use Value: Eliminates need for battery-backed SRAM or external EEPROM writes, reducing BOM count and field failure risk from battery leakage. | Use Scenario: Retaining ladder logic state and I/O configuration across PLC power cycles and firmware updates. IC Role / Device Role / Timing Role: Drop-in SRAM replacement with guaranteed 20-year data retention - maintains operational continuity without manual save routines. Use Value: Enables zero-downtime firmware upgrades and eliminates configuration re-entry after maintenance outages. |
| Metering Communication Module | Medical Diagnostic Equipment Buffer |
Use Scenario: Storing encrypted billing data and communication logs in smart electricity meters with tamper-proof power-loss protection. IC Role / Device Role / Timing Role: Secure nonvolatile storage element interfaced via standard SRAM bus - supports cryptographic key caching and audit trail persistence. Use Value: Meets IEC 62056-21 data integrity requirements by ensuring STORE completes within 20 ms using 0.1 µF VCAP. | Use Scenario: Capturing high-speed ECG waveform segments during diagnostic imaging, preserving last 30 seconds on power interruption. IC Role / Device Role / Timing Role: Real-time acquisition buffer with deterministic STORE latency - synchronized to ADC sampling clock and system reset vector. Use Value: Guarantees clinically relevant waveform continuity for FDA 510(k)-compliant devices without adding FPGA-based backup logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FM24V02A-G | 256-Kbit F-RAM; 3.3 V only; 55 ns access; no VCAP capacitor required. | Lacks autostore on 5-V systems; incompatible with legacy 5-V MPU buses without level shifting. | Select when 3.3-V design allows elimination of VCAP circuitry and lower power consumption is prioritized over speed. |
| MB85RS2MT-FPN-G-BNDER | 2-Mbit FRAM; 1.8–3.6 V; SPI interface; 25 MHz max clock. | Serial interface requires driver software overhead; not pin-compatible with parallel SRAM buses. | Select when board space is constrained and SPI interface is already used for other peripherals - not for SRAM socket replacement. |
Compared with FM24V02A-G and MB85RS2MT-FPN-G-BNDER, the CY14E256LA-SZ25XI uniquely delivers 5-V parallel SRAM compatibility, 25 ns speed, and capacitor-assisted autostore - making it the only option for retrofitting legacy industrial controllers without redesigning power or bus architecture.
Availability
CY14E256LA-SZ25XI is available at Aetrix Electronics and suitable for industrial data loggers, programmable logic controllers, smart metering modules, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for CY14E256LA-SZ25XI 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 management, automotive ICs, and memory solutions with ISO 9001 and IATF 16949 certified manufacturing.
This part belongs to Infineon's nvSRAM product line, engineered specifically for mission-critical industrial and infrastructure applications where data integrity during power disruption is non-negotiable.
FAQ
What is the minimum VCAP capacitor value required for reliable AutoStore operation?
The CY14E256LA-SZ25XI requires a minimum 0.1 µF X7R ceramic capacitor on the VCAP pin to guarantee full STORE completion within 20 ms during VCC dropout. Lower values risk incomplete STORE and data corruption; larger values (e.g., 1 µF) extend hold-up time but do not improve reliability beyond specification.
Can the CY14E256LA-SZ25XI operate without the VCAP capacitor?
Yes, but AutoStore is disabled - the device functions as a standard SRAM with no nonvolatile capability unless STORE is triggered manually via HSB or software sequence. Leaving VCAP unconnected without disabling AutoStore causes data corruption during power loss due to insufficient charge.
How does the HSB pin behave during a Software STORE cycle?
During Software STORE, HSB is driven LOW immediately after the sixth address read (0x0FC0) and remains LOW for the full tSTORE duration (max 20 ms). It returns HIGH upon completion, first with strong drive (tHHHD ≈ 100 ns), then held HIGH by internal 100 kΩ pull-up - no external pull-up is needed.
Is the CY14E256LA-SZ25XI RoHS compliant and lead-free?
Yes, the CY14E256LA-SZ25XI is fully RoHS compliant and Pb-free, meeting EU Directive 2011/65/EU and IPC/JEDEC J-STD-609A Class 3 moisture sensitivity level (MSL-3), with peak reflow temperature rating of 260°C.
CY14E256LA-SZ25XI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOIC
CY14E256LA-SZ25XI FAQ
1.How can I place an order for CY14E256LA-SZ25XI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14E256LA-SZ25XI 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 CY14E256LA-SZ25XI reliable?
The price and inventory of CY14E256LA-SZ25XI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14E256LA-SZ25XI is usually 5 days.
3.What payment methods are accepted for CY14E256LA-SZ25XI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14E256LA-SZ25XI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14E256LA-SZ25XI?
CY14E256LA-SZ25XI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14E256LA-SZ25XI 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 CY14E256LA-SZ25XI?
For technical support, including CY14E256LA-SZ25XI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14E256LA-SZ25XI requirements.
6.How does Aetrix verify that CY14E256LA-SZ25XI is sourced from the original manufacturer or authorized distributors?
All CY14E256LA-SZ25XI 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 CY14E256LA-SZ25XI meets industry standards.
7.What is the process for return or replacement of CY14E256LA-SZ25XI?
All CY14E256LA-SZ25XI units undergo pre-shipment inspection (PSI). If there is an issue with CY14E256LA-SZ25XI, 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 CY14E256LA-SZ25XI part is unused and in its original packaging.
Return procedure for CY14E256LA-SZ25XI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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