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Winbond Electronics Corporation W25N04KVTBIU
- Part No.:
- W25N04KVTBIU
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25N04KVTBIU.pdf
- Description:
- IC FLASH 4GBIT SPI/QUAD 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,537
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Product details
Overview
W25N04KVTBIU from Winbond is a 4G-bit (512MB) SLC QspiNAND Flash memory IC supporting Dual/Quad SPI interfaces, 104MHz clock rate, on-chip 8-bit ECC, and 128KB uniform block erase. It delivers 50MB/s sequential read throughput and targets embedded storage in space-constrained industrial controllers and IoT gateways requiring reliable non-volatile code/data storage.
For engineers reviewing the W25N04KVTBIU datasheet, W25N04KVTBIU pinout, W25N04KVTBIU application, or W25N04KVTBIU equivalent, key selection considerations include its dual/quad SPI compatibility, buffer vs. sequential read mode configuration, hardware/software write protection options, and TFBGA-24 (6x4 ball array) package with /HOLD and /WP dual-function pins.
Technical Context
The W25N04KVTBIU implements a QspiNAND architecture combining SPI command simplicity with NAND density efficiency. Its memory array comprises 262,144 pages of 2,048 bytes each, organized into 2,048 erasable 128KB blocks. Internal 2,048-byte page buffer enables full-page programming in one operation.
It supports three operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI (IO0–IO3), with Fast Read Quad I/O achieving up to 416MHz equivalent bandwidth. The device includes volatile and OTP-configurable registers for ECC enablement (ECC-E), buffer/sequential read selection (BUF), output driver strength (ODS), and hardware write protection control (WP-E).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4G-bit (512M-byte) SLC NAND array, enabling compact high-capacity storage without parallel bus overhead. |
| Interface Support | Standard/Dual/Quad SPI with 104MHz max CLK; supports Fast Read Quad I/O (6Bh/6Ch) for 416MHz effective throughput. |
| Read Performance | 50MB/s sequential data transfer rate in Sequential Read Mode (BUF=0), optimized for firmware image loading. |
| ECC Capability | On-chip 8-bit ECC with status reporting (ECC-1/ECC-0) and bit-flip count tracking (BFD/BFS/BFR), reducing host-side error correction burden. |
| Endurance & Retention | 60,000 program/erase cycles per block and 10-year data retention at +85°C, suitable for field-deployed industrial logging. |
| Power Supply | Single 2.7V–3.6V supply; 25mA active current, 20µA standby, 2µA deep power-down for battery-backed systems. |
| Operating Temp | -40°C to +105°C (Industrial Plus Grade), validated for extended thermal cycling in edge computing enclosures. |
Pinout & Package
W25N04KVTBIU uses a 24-ball TFBGA 8x6-mm package (Package Code TC, 6x4 ball array). Pin functions are defined per JEDEC-compliant ball assignments with dedicated /CS, CLK, and bidirectional IOs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable controlling device selection and high-impedance DO/IO states; must transition high→low after power-up to accept instructions. |
| CLK | Serial Clock Input | Timing reference for all SPI operations; rising edge latches input, falling edge samples output; supports up to 104MHz. |
| DI (IO0) | Data Input / I/O0 | Primary input for Standard/Dual SPI; becomes bidirectional I/O0 in Quad SPI; used for instruction/address/data loading. |
| DO (IO1) | Data Output / I/O1 | Primary output for Standard SPI; becomes bidirectional I/O1 in Dual/Quad SPI; carries status, ID, and read data. |
| /WP (IO2) | Write Protect Input / I/O2 | In Hardware Protection mode (WP-E=1), disables all writes when pulled low; otherwise serves as I/O2 in Quad SPI. |
| /HOLD (IO3) | Hold Input / I/O3 | Pauses Standard/Dual SPI transfers when low; becomes I/O3 in Quad SPI; requires external pull-up to prevent floating. |
Key Features
| Feature | Design Value |
|---|---|
| Sequential Read Mode (BUF=0) | Enables single-command access to entire memory array, eliminating address re-sending overhead for large firmware updates. |
| Configurable ECC Enable (ECC-E) | Volatile bit allowing runtime activation/deactivation of on-chip 8-bit ECC, balancing reliability and latency for different data types. |
| Dual-function /WP and /HOLD pins | Support both hardware write protection and Quad SPI I/O expansion, maximizing interface flexibility without extra pins. |
| OTP Lockable Registers | SRP0/SRP1 and BP[3:0] bits can be permanently locked via OTP, preventing accidental or malicious register modification in deployed systems. |
| Ten 2KB OTP Pages | Provide immutable storage for cryptographic keys, calibration data, or device-specific identifiers that survive field reprogramming. |
Applications
| Industrial PLC Firmware Storage | Edge Gateway Boot Image Storage |
|---|---|
|
Use Scenario: Storing and executing boot firmware and real-time control logic in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Non-volatile code storage and XIP-capable execution source via Dual/Quad SPI interface. Use Value: 10-year data retention and -40°C to +105°C operation ensure firmware integrity across thermal cycling and long service intervals. |
Use Scenario: Holding Linux kernel, root filesystem, and OTA update partitions in cellular-connected industrial gateways with constrained PCB area. IC Role / Device Role / Timing Role: High-density embedded storage with 50MB/s sequential read for fast boot and application loading. Use Value: TFBGA-24 package (8x6mm) reduces footprint by >60% versus legacy parallel NAND, enabling compact gateway designs. |
| Smart Meter Data Logging | Medical Device Configuration Storage |
|
Use Scenario: Recording time-stamped energy consumption metrics and event logs in ANSI C12.22-compliant smart meters with tamper resistance requirements. IC Role / Device Role / Timing Role: Secure, endurance-rated storage with hardware write protection and OTP-based unique ID binding. Use Value: On-chip 8-bit ECC and configurable WP-E/SRP locking prevent data corruption and unauthorized firmware modification. |
Use Scenario: Storing FDA-mandated calibration coefficients, device serial numbers, and safety-critical configuration parameters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Immutable parameter storage using ten 2KB OTP pages and JEDEC-standard Unique ID page. Use Value: OTP pages guarantee write-once persistence of regulatory data, eliminating risk of accidental overwrites during field servicing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar QspiNAND flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Macronix MX35LF4GEIM-12G | Same 4G-bit SLC QspiNAND density, 104MHz clock, but uses 8-pad WSON only; no TFBGA option; lacks BUF-mode sequential read optimization. | Preferred where board space allows WSON and sequential read performance is secondary to cost. | Select when footprint constraints favor WSON and system firmware does not require single-command full-array access. |
| Micron MT29F4G08ABAEAWP-AIT | 4G-bit SLC NAND with eMMC-like interface (not SPI); requires controller-level protocol stack; no native SPI command set or ECC registers. | Suitable for host processors with NAND controller IP but incompatible with standard SPI microcontrollers. | Choose only if host SoC integrates NAND controller and system architecture excludes SPI-native devices. |
Compared with MX35LF4GEIM-12G, W25N04KVTBIU offers superior sequential read efficiency and TFBGA packaging flexibility; versus MT29F4G08ABAEAWP-AIT, it eliminates controller dependency and simplifies firmware integration via standard SPI commands.
Availability
W25N04KVTBIU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, edge gateway boot image storage, and smart meter data logging requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for W25N04KVTBIU 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 SPI NOR/NAND, RAM, and voice ICs, serving industrial, automotive, and consumer markets since 1987.
The W25N QspiNAND product line was designed to bridge the gap between SPI flash simplicity and NAND density, targeting embedded systems needing >1G-bit non-volatile storage without complex NAND controllers - exemplified by W25N04KVTBIU's integrated ECC and buffer/sequential read modes.
FAQ
What is the package type and pin count of W25N04KVTBIU?
W25N04KVTBIU uses a 24-ball TFBGA 8x6-mm package with a 6x4 ball array (Package Code TC). It has six functional signal terminals (/CS, CLK, DI/IO0, DO/IO1, /WP/IO2, /HOLD/IO3), plus VCC and GND, with remaining balls designated NC. This matches the pinout shown in Figure 1b of the official datasheet Revision C.
Does W25N04KVTBIU support Quad SPI operation and what are its timing limits?
Yes, W25N04KVTBIU fully supports Quad SPI operation using IO0–IO3, with maximum CLK frequency of 104MHz. When using Fast Read Quad I/O instructions (EBh/ECh), it achieves 416MHz equivalent bandwidth. AC timing parameters - including tV (output valid), tQH (output hold), and tSU (input setup) - are specified in Section 9.6 of the datasheet under "AC Electrical Characteristics" for both standard and Quad modes.
How does the Buffer Read vs. Sequential Read mode affect W25N04KVTBIU performance?
W25N04KVTBIU's BUF bit (in Status Register-2) selects between two read architectures: Buffer Read (BUF=1) loads one page into internal buffer before reading, while Sequential Read (BUF=0) streams data continuously across page boundaries with a single command. Sequential Read enables 50MB/s throughput and eliminates inter-page address overhead - critical for firmware image loading in W25N04KVTBIU-based systems.
What write protection mechanisms does W25N04KVTBIU provide beyond software registers?
W25N04KVTBIU provides three hardware-assisted protections: (1) /WP pin functionality controlled by WP-E bit - when enabled, pulling /WP low disables all write/erase operations; (2) OTP-lockable Block Protect (BP[3:0]) and Status Register Protect (SRP[1:0]) bits; and (3) Power Supply Lock-Down that prevents writes during brown-out conditions. These are documented in Sections 4.3, 7.1, and 7.6 of the datasheet for W25N04KVTBIU.
Can W25N04KVTBIU be used for Execute-in-Place (XIP) applications?
Yes, W25N04KVTBIU supports XIP via Dual/Quad SPI interfaces, as stated in Section 1 ("General Descriptions") of its datasheet: "ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI (XIP)". Its 104MHz clock and Fast Read Dual/Quad I/O instructions deliver sufficient bandwidth for real-time instruction fetch in microcontroller-based W25N04KVTBIU deployments.
W25N04KVTBIU 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
- Memory Size:
- 4Gbit
- Memory Organization:
- 512M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 250µs
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TFBGA (8x6)
W25N04KVTBIU FAQ
1.How can I place an order for W25N04KVTBIU through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N04KVTBIU 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 W25N04KVTBIU reliable?
The price and inventory of W25N04KVTBIU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N04KVTBIU is usually 5 days.
3.What payment methods are accepted for W25N04KVTBIU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N04KVTBIU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N04KVTBIU?
W25N04KVTBIU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N04KVTBIU 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 W25N04KVTBIU?
For technical support, including W25N04KVTBIU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N04KVTBIU requirements.
6.How does Aetrix verify that W25N04KVTBIU is sourced from the original manufacturer or authorized distributors?
All W25N04KVTBIU 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 W25N04KVTBIU meets industry standards.
7.What is the process for return or replacement of W25N04KVTBIU?
All W25N04KVTBIU units undergo pre-shipment inspection (PSI). If there is an issue with W25N04KVTBIU, 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 W25N04KVTBIU part is unused and in its original packaging.
Return procedure for W25N04KVTBIU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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