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Winbond Electronics Corporation W25N02KWZEIU TR
- Part No.:
- W25N02KWZEIU TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25N02KWZEIU TR.pdf
- Description:
- IC FLASH 2GBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,122
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Product details
Overview
W25N02KWZEIU TR from Winbond Electronics is a 2Gb (256MB) serial NAND flash memory IC with SPI interface, 1.8V core voltage, 100MHz clock support, and built-in ECC correction-designed for embedded storage in space-constrained IoT edge nodes, industrial HMIs, and automotive infotainment boot media.
For engineers reviewing the W25N02KWZEIU TR datasheet, W25N02KWZEIU TR pinout, W25N02KWZEIU TR application, or W25N02KWZEIU TR equivalent, key selection factors include page-program time (800μs typical), block-erase endurance (100K cycles), data retention (10 years at 25°C), and support for Quad I/O and Continuous Read modes in an 8-pin WSON package.
Technical Context
This device implements a true serial NAND architecture with internal 4-bit ECC engine, supporting standard SPI commands plus extended opcodes for multi-plane operations and cache programming. It uses a 2-plane organization (each plane 128MB) to enable concurrent read/program across planes, reducing effective latency in high-throughput firmware update scenarios.
The W25N02KWZEIU TR integrates a dedicated status register for real-time monitoring of program/erase progress and ECC status flags, and supports hardware write protection via WP# pin and software-based sector locking. Its command set complies with ONFI 2.3 Serial NAND specification while maintaining backward compatibility with legacy Winbond W25Nxx family timing and protocol behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Gb (256 MB) organized as 2048 blocks × 64 pages × 2048 bytes per page - enables full firmware image storage without external memory expansion. |
| Interface | Quad SPI (QPI) with single/dual/quad I/O modes - delivers up to 40 MB/s sequential read throughput using continuous read mode. |
| Operating Voltage | 1.7V–1.95V VCC range - ensures compatibility with low-power 1.8V system rails and reduces power supply complexity. |
| Program Time | 800 μs typical page-program time - meets real-time OTA update deadlines in constrained industrial gateways. |
| Erase Endurance | 100,000 program/erase cycles per block - supports frequent field firmware updates over 10+ year product lifecycle. |
| Data Retention | 10 years at 25°C - guarantees long-term reliability for unattended remote sensor nodes and automotive control modules. |
| ECC Engine | Built-in 4-bit BCH ECC per 512-byte sector - eliminates need for host-side ECC logic and simplifies SoC integration. |
Pinout & Package
W25N02KWZEIU TR is housed in an 8-pin 6mm × 5mm WSON (Wettable Flank) package, optimized for automated optical inspection (AOI) and reflow soldering in high-volume manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – /CS | Chip Select | Active-low enable for SPI command decoding; must be asserted before each instruction sequence. |
| 2 – DO / IO0 | Data Output / I/O 0 | Serial data output in standard SPI mode; bidirectional I/O line in Dual/Quad mode. |
| 3 – /WP | Write Protect | Hardware lock for top/bottom 1/4 sectors when pulled low; overrides software write protection. |
| 4 – GND | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection. |
| 5 – DI / IO1 | Data Input / I/O 1 | Serial data input in standard SPI; second bidirectional I/O line in Dual/Quad mode. |
| 6 – CLK | Serial Clock | Master-generated clock driving all command, address, and data transfers; supports up to 100 MHz. |
| 7 – /HOLD | Hold Control | Pauses ongoing serial transfer without deselecting chip; enables multi-master arbitration on shared bus. |
| 8 – VCC | Power Supply | 1.8V core supply; requires local 1μF ceramic decoupling capacitor placed within 3 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-bit BCH ECC | Corrects up to 4 bit errors per 512-byte sector without host CPU intervention - reduces firmware overhead and improves system robustness. |
| Continuous Read Mode | Eliminates inter-byte delays during sequential reads - achieves sustained 40 MB/s throughput for fast boot image loading. |
| Two-Plane Architecture | Enables concurrent read from one plane while programming another - cuts effective firmware update time by ~35% vs single-plane NAND. |
| Hardware Write Protection | Dedicated /WP pin locks critical boot sectors against accidental overwrite - essential for ASIL-B compliant automotive applications. |
| Quad I/O Support | Four data lines (IO0–IO3) double bandwidth over standard SPI - allows compact MCU designs without parallel NOR/NAND interfaces. |
| Wettable Flank Package | Side-wettable leads enable automated optical inspection of solder joints - improves yield in Class III industrial assembly lines. |
Applications
| Industrial HMI Storage | Automotive Infotainment Boot |
|---|---|
|
Use Scenario: Storing GUI assets, firmware, and configuration data in panel-mounted HMIs operating in factory environments with wide temperature swings. IC Role / Device Role: Primary non-volatile storage for boot code and runtime assets, interfaced directly to ARM Cortex-M7 MCU via Quad SPI. Use Value: 100K erase cycles and 10-year data retention ensure reliable operation over 15-year equipment service life without field replacement. |
Use Scenario: Holding boot loader and safety-critical firmware partitions in automotive head units requiring ISO 26262-compliant storage integrity. IC Role / Device Role: Secure boot media with hardware write protection and ECC-verified read paths for ASIL-B functional safety compliance. Use Value: Built-in 4-bit ECC and /WP pin eliminate need for external error-correction ICs and simplify FMEDA analysis for safety certification. |
| IoT Edge Gateway Firmware | Medical Diagnostic Device Logs |
|
Use Scenario: Hosting OTA-updatable firmware images and encrypted telemetry buffers in battery-powered cellular gateways deployed in remote locations. IC Role / Device Role: Field-upgradable storage with dual-plane concurrency to minimize downtime during background firmware validation and swap. Use Value: 800μs page-program time and 2-plane operation reduce OTA window by 40%, extending battery life between charges. |
Use Scenario: Recording time-stamped diagnostic logs and calibration history in portable ultrasound and ECG devices requiring FDA 21 CFR Part 11 audit trails. IC Role / Device Role: Tamper-resistant, long-retention storage for immutable clinical event records tied to hardware-secured timestamps. Use Value: 10-year data retention at 25°C and hardware write protection meet regulatory requirements for medical record permanence and integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NAND flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Macronix MX35LF2GE4AB | 2Gb serial NAND, 3.3V VCC, no integrated ECC - requires host-side ECC implementation. | Suitable for cost-sensitive consumer electronics where host processor has spare cycles for ECC computation. | Select only if system already implements BCH ECC in firmware and operates at 3.3V logic level. |
| Micron MT29F2G01ABAGDWB-IT | 2Gb serial NAND, 1.8V VCC, includes 4-bit ECC, but uses 16-pin SOIC package - larger footprint and no wettable flanks. | Preferred in legacy industrial designs where board layout cannot accommodate WSON or AOI capability is unavailable. | Choose when existing PCB tooling supports SOIC-16 and reflow profile does not require side-wettable lead verification. |
Compared with MX35LF2GE4AB and MT29F2G01ABAGDWB-IT, the W25N02KWZEIU TR uniquely combines 1.8V operation, integrated ECC, WSON-8 wettable flank packaging, and dual-plane concurrency - making it optimal for new designs targeting miniaturization, functional safety, and automated manufacturing.
Availability
W25N02KWZEIU TR is available at Aetrix Electronics and suitable for industrial HMIs, automotive infotainment systems, and IoT edge gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for W25N02KWZEIU TR 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
Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including NOR/NAND flash, SRAM, and mobile DRAM, serving automotive, industrial, and communications markets since 1987.
The W25Nxx family targets cost- and space-constrained embedded systems needing high-density serial flash with enhanced reliability features - designed specifically to replace parallel NAND and legacy SPI NOR in boot and firmware storage roles.
FAQ
What is the maximum clock frequency supported by the W25N02KWZEIU TR?
The W25N02KWZEIU TR supports up to 100 MHz for standard and Quad SPI read operations under 1.8V supply and 25°C ambient conditions. This enables continuous read throughput of up to 40 MB/s. The W25N02KWZEIU TR datasheet specifies timing parameters for all supported modes, including setup/hold margins required for reliable operation at this rate.
Does the W25N02KWZEIU TR include built-in error correction?
Yes, the W25N02KWZEIU TR integrates a hardware 4-bit BCH ECC engine that automatically corrects up to four bit errors per 512-byte sector during read operations. This eliminates the need for host-side ECC processing and is enabled by default - the W25N02KWZEIU TR handles correction transparently without software intervention.
What package type is used for the W25N02KWZEIU TR?
The W25N02KWZEIU TR uses an 8-pin WSON (6mm × 5mm) package with wettable flanks, designed for automated optical inspection and high-yield reflow soldering. This package is distinct from SOIC or TSSOP variants and requires specific PCB land patterns and stencil apertures defined in the W25N02KWZEIU TR packaging specification.
Can the W25N02KWZEIU TR be used as a direct replacement for parallel NAND devices?
No, the W25N02KWZEIU TR is a serial NAND device with SPI interface and is not pin-compatible or electrically compatible with parallel NAND components. It requires SPI-capable host controllers and software drivers compliant with ONFI Serial NAND command sets - the W25N02KWZEIU TR replaces parallel NAND only at the system architecture level, not as a drop-in hardware substitute.
What is the guaranteed endurance rating for the W25N02KWZEIU TR?
The W25N02KWZEIU TR is rated for 100,000 program/erase cycles per block across its full temperature range (–40°C to +85°C). This endurance level is verified per JEDEC JESD22-A117 and applies to all 2048 blocks in the device. Wear leveling must be implemented in the host controller to achieve this lifetime - the W25N02KWZEIU TR itself does not perform wear leveling internally.
W25N02KWZEIU TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NAND (SLC)
- Memory Size:
- 2Gbit
- Memory Organization:
- 256M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 700µs
- Access Time:
- 8 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25N02KWZEIU TR FAQ
1.How can I place an order for W25N02KWZEIU TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N02KWZEIU TR 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 W25N02KWZEIU TR reliable?
The price and inventory of W25N02KWZEIU TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N02KWZEIU TR is usually 5 days.
3.What payment methods are accepted for W25N02KWZEIU TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N02KWZEIU TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N02KWZEIU TR?
W25N02KWZEIU TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N02KWZEIU TR 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 W25N02KWZEIU TR?
For technical support, including W25N02KWZEIU TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N02KWZEIU TR requirements.
6.How does Aetrix verify that W25N02KWZEIU TR is sourced from the original manufacturer or authorized distributors?
All W25N02KWZEIU TR 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 W25N02KWZEIU TR meets industry standards.
7.What is the process for return or replacement of W25N02KWZEIU TR?
All W25N02KWZEIU TR units undergo pre-shipment inspection (PSI). If there is an issue with W25N02KWZEIU TR, 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 W25N02KWZEIU TR part is unused and in its original packaging.
Return procedure for W25N02KWZEIU TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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