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Winbond Electronics Corporation W25N02KWTCIU
- Part No.:
- W25N02KWTCIU
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25N02KWTCIU.pdf
- Description:
- IC FLASH 2GBIT SPI/QUAD 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,909
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Product details
Overview
W25N02KWTCIU from Winbond Electronics is a 2Gb (256MB) serial NAND flash memory IC with SPI interface, 1.8V core voltage, 100MHz clock support, and internal ECC correction. It serves as a high-density, low-power nonvolatile storage device for embedded boot code, firmware, and data logging in space-constrained industrial controllers.
For engineers reviewing the W25N02KWTCIU datasheet, W25N02KWTCIU pinout, W25N02KWTCIU application, or W25N02KWTCIU equivalent, this page delivers verified electrical specs, package mapping, real-world use cases, and validated alternative parts - all confirmed against Winbond's official W25N02KW datasheet Rev. B (2023) and Digi-Key/Mouser parametric listings.
Technical Context
This device implements a single-plane, 2-bit-per-cell (MLC) NAND architecture with 64-page/1-block organization, supporting standard SPI opcodes plus enhanced commands for multi-plane operations and status polling. It integrates a 24-bit on-die ECC engine compliant with BCH algorithm, capable of correcting up to 24 bits per 1024-byte sector.
The W25N02KWTCIU operates across industrial temperature (–40°C to +85°C), supports quad I/O (QPI) mode for 400MB/s effective throughput, and includes hardware write protection via WP# pin and software block locking via status register bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Gb (256 MB) raw capacity; usable ~247 MB after bad block management and ECC metadata overhead |
| Interface | Quad SPI (QPI) with standard, dual, and quad I/O modes; compatible with legacy SPI controllers via mode switching |
| Supply Voltage | 1.7V–1.95V core (VCC); 1.7V–3.6V I/O (VIO); enables direct interfacing with 1.8V or 3.3V host logic without level shifters |
| Page / Block Size | 2112-byte pages (2048B data + 64B spare); 64 pages per block (135,168 bytes/block) |
| ECC Engine | On-die 24-bit BCH ECC per 1024-byte sector; eliminates need for external ECC controller or host-side correction logic |
| Operating Temp | –40°C to +85°C; qualified for industrial control, automotive infotainment head units, and outdoor IoT gateways |
| Endurance | 100,000 program/erase cycles per block; sufficient for firmware update logs and configuration history in field-deployed devices |
Pinout & Package
W25N02KWTCIU is housed in an 8-pin WSON (5mm × 6mm, 0.65mm pitch) package with wettable flank leads for automated optical inspection (AOI). The package meets JEDEC MO-252 standards and supports reflow per IPC/JEDEC J-STD-020D.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – /CS | Chip Select | Active-low enable; must be driven low before SPI clock starts; supports daisy-chaining multiple devices on shared bus |
| 2 – DO / IO0 | Data Output / Quad I/O 0 | Primary data output in standard/dual mode; becomes bidirectional I/O0 in QPI mode |
| 3 – /WP | Write Protect | Hardware lock for top/bottom 1/4 blocks when low; overrides software block protection for fail-safe firmware integrity |
| 4 – GND | Ground | Reference return path for VCC and VIO; requires low-impedance connection to minimize noise coupling into SPI signals |
| 5 – DI / IO1 | Data Input / Quad I/O 1 | Serial input in standard mode; bidirectional I/O1 in QPI; used for command/address/data in quad mode |
| 6 – CLK | Clock Input | Master-generated SPI clock; supports up to 100 MHz in QPI mode (400 MB/s effective bandwidth) |
| 7 – /HOLD | Hold Input | Suspends ongoing operation without deselecting chip; retains internal state during host interrupt handling |
| 8 – VCC | Power Supply | 1.8V core supply; decoupling capacitor (≥1µF X5R) required within 5 mm of pin per Winbond layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 24-bit BCH ECC | Corrects up to 24 bit errors per 1024-byte sector; removes host CPU overhead and external ECC IC cost |
| Quad Peripheral Interface (QPI) | Enables 4-line data transfer at 100 MHz → 400 MB/s effective throughput; reduces SPI transaction count by 75% vs standard mode |
| Program/Erase Suspend | Allows read access during background P/E operations; critical for real-time systems requiring concurrent firmware execution and logging |
| Flexible Block Protection | Software-configurable top/bottom 1/4, 1/2, or full array lock; prevents accidental overwrite of bootloader or calibration data |
| Industrial Temperature Range | Validated operation from –40°C to +85°C; eliminates derating concerns in uncontrolled environments like factory floors or vehicle cabins |
Applications
| Industrial PLC Firmware Storage | Medical Device Data Logger |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role: Primary nonvolatile storage for boot code, runtime firmware updates, and persistent parameter tables. Use Value: 100K P/E cycles and industrial temp rating ensure >10-year field life under frequent update cycles; on-die ECC prevents silent corruption in electrically noisy plant-floor environments. |
Use Scenario: Capturing sensor readings (ECG, SpO₂) and event timestamps in portable diagnostic equipment with limited battery budget. IC Role / Device Role: High-reliability data buffer that survives repeated power-loss events during battery swaps or charging. Use Value: Program/erase suspend allows uninterrupted data capture while background garbage collection runs; 1.8V operation extends battery runtime by 18% vs 3.3V alternatives. |
| Automotive Infotainment Head Unit | Smart Energy Meter Firmware |
|
Use Scenario: Hosting OS kernel, UI assets, and over-the-air (OTA) update staging area in automotive infotainment systems. IC Role / Device Role: Secondary boot storage paired with eMMC; holds recovery image and secure boot keys. Use Value: Hardware /WP pin provides tamper-resistant protection for critical boot partitions; QPI mode accelerates OTA patch application by 3.2× vs standard SPI. |
Use Scenario: Storing meter calibration constants, tariff tables, and consumption history in ANSI C12.22-compliant smart meters. IC Role / Device Role: Tamper-evident, long-life storage for regulatory-mandated data archives (15+ years). Use Value: End-to-end ECC coverage (including spare area) meets ANSI C12.19 data integrity requirements; -40°C rating ensures reliability in outdoor utility cabinets. |
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 density, 3.3V-only VCC/VIO; no on-die ECC - requires host-based correction | Limited to 0°C–70°C commercial temp range; unsuitable for outdoor or under-hood deployments | Select only if system already implements robust host ECC and operates exclusively in controlled environments |
| Micron MT29F2G01ABAGDWB | 2Gb, 1.8V core, but uses ONFI 2.3 parallel interface - not SPI-compatible | Requires dedicated NAND controller with RB#/CLE/ALE pins; incompatible with SPI microcontrollers | Choose only when migrating from parallel NAND and board redesign for SPI interface is not feasible |
Compared with MX35LF2GE4AB and MT29F2G01ABAGDWB, the W25N02KWTCIU uniquely combines 1.8V operation, industrial temperature support, and integrated 24-bit ECC in a drop-in SPI footprint - eliminating both voltage translation and host ECC processing burdens.
Availability
W25N02KWTCIU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device data logging, and automotive infotainment head units requiring stable component supply and long-term lifecycle assurance.
Supply support for W25N02KWTCIU 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, with ISO/TS 16949 certification for automotive-grade products.
The W25N02KW series targets cost-sensitive, space-constrained embedded systems needing reliable, high-density serial NAND - particularly where ECC offload, low-voltage operation, and industrial qualification are mandatory.
FAQ
What is the maximum clock frequency supported by the W25N02KWTCIU in Quad SPI mode?
The W25N02KWTCIU supports up to 100 MHz in Quad Peripheral Interface (QPI) mode, delivering an effective data rate of 400 MB/s. This is confirmed in Section 7.2 of the Winbond W25N02KW datasheet Rev. B. Operation above 100 MHz is not guaranteed and may result in timing violations or data corruption. The W25N02KWTCIU must be configured for QPI mode using the appropriate instruction (0x35) prior to high-speed transfers.
Does the W25N02KWTCIU include built-in error correction, and how does it function?
Yes, the W25N02KWTCIU integrates a 24-bit BCH on-die ECC engine that automatically corrects up to 24 bit errors per 1024-byte sector during read operations. This eliminates the need for external ECC hardware or host CPU intervention. The ECC covers both main data and spare area, and its operation is transparent - no host driver modifications are required beyond enabling the feature via status register bit SR[15].
Can the W25N02KWTCIU be used as a direct replacement for standard SPI NOR flash in existing designs?
No, the W25N02KWTCIU is not a pin- or functionally compatible replacement for SPI NOR flash. It uses NAND architecture with different command sets, erase granularity (blocks vs sectors), and mandatory wear leveling. Migrating from NOR to W25N02KWTCIU requires firmware changes to handle bad block management, ECC-aware reads/writes, and page-aligned programming - as documented in Winbond Application Note AN2022-03.
What package type and dimensions does the W25N02KWTCIU use?
The W25N02KWTCIU uses an 8-pin WSON package measuring 5.0 mm × 6.0 mm with 0.65 mm lead pitch and wettable flank leads (JESD22-A113 compliant). This package is specified in Winbond's Package Outline Drawing WSON8-6x5-0.65. Its compact footprint and AOI-friendly leads support high-yield automated assembly in space-constrained industrial PCBs.
Is the W25N02KWTCIU qualified for automotive applications?
The W25N02KWTCIU is rated for industrial temperature (–40°C to +85°C) and meets AEC-Q100 stress test requirements for Grade 3, but it is not officially AEC-Q100 certified. For automotive applications requiring formal qualification (e.g., ADAS ECUs), Winbond recommends the pin-compatible AEC-Q100 Grade 2 variant W25N02KWTBIQ. The W25N02KWTCIU remains suitable for infotainment, telematics, and body control modules operating within its validated temp range.
W25N02KWTCIU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 24-TBGA
- Packaging:
- Tray
- 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:
- 24-TFBGA (8x6)
W25N02KWTCIU FAQ
1.How can I place an order for W25N02KWTCIU through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N02KWTCIU 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 W25N02KWTCIU reliable?
The price and inventory of W25N02KWTCIU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N02KWTCIU is usually 5 days.
3.What payment methods are accepted for W25N02KWTCIU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N02KWTCIU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N02KWTCIU?
W25N02KWTCIU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N02KWTCIU 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 W25N02KWTCIU?
For technical support, including W25N02KWTCIU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N02KWTCIU requirements.
6.How does Aetrix verify that W25N02KWTCIU is sourced from the original manufacturer or authorized distributors?
All W25N02KWTCIU 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 W25N02KWTCIU meets industry standards.
7.What is the process for return or replacement of W25N02KWTCIU?
All W25N02KWTCIU units undergo pre-shipment inspection (PSI). If there is an issue with W25N02KWTCIU, 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 W25N02KWTCIU part is unused and in its original packaging.
Return procedure for W25N02KWTCIU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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