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Winbond Electronics Corporation W25N04KVTCIU
- Part No.:
- W25N04KVTCIU
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25N04KVTCIU.pdf
- Description:
- IC FLASH 4GBIT SPI/QUAD 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
W25N04KVTCIU 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 code storage, XIP execution, and firmware logging in space-constrained industrial controllers.
For engineers reviewing the W25N04KVTCIU datasheet, W25N04KVTCIU pinout, W25N04KVTCIU application, or W25N04KVTCIU equivalent, key selection criteria include its 8-pin WSON 8x6-mm package, buffer/sequential read mode control (BUF bit), configurable ECC enable (ECC-E), dual/quad I/O flexibility, and hardware/software write protection via /WP and SRP bits.
Technical Context
The W25N04KVTCIU implements a QspiNAND architecture combining SPI command compatibility with NAND-style density and page/block organization: 262,144 × 2,048-byte pages, 2,048 × 128KB erasable blocks. Its internal 2,048-byte 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 instructions achieving up to 416MHz equivalent bandwidth. The device uses volatile and OTP-lockable status registers (SR-1/SR-2) for block protection, ECC configuration, driver strength, and hold disable control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4G-bit (512MB), organized as 262,144 pages × 2,048 bytes |
| Interface Support | Standard/Dual/Quad SPI with CLK up to 104MHz; 208/416MHz effective bandwidth |
| ECC Capability | On-chip 8-bit ECC with status reporting (ECC-1/ECC-0), BFD/BFS/BFR registers |
| Read Throughput | 50MB/s sequential read in Buffer Read mode (BUF=1) |
| Endurance & Retention | 60,000 program/erase cycles; 10-year data retention at +85°C |
| Power Supply | Single 2.7V–3.6V supply; 25mA active, 20µA standby, 2µA deep power-down |
| Operating Temp | -40°C to +85°C (Industrial Grade) |
Pinout & Package
W25N04KVTCIU is packaged in an 8-pad WSON 8×6-mm (Package Code ZE) with exposed thermal pad. Pin functions are fully defined per datasheet Figure 1a and Section 3.2.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO when high; required low-to-high transition after power-up to accept new instructions |
| 2 DO (IO1) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI; high-impedance during /HOLD low |
| 3 /WP (IO2) | Write Protect Input / I/O2 | Hardware lock for Status Register when WP-E=1; functions as I/O2 in Quad SPI when WP-E=0 |
| 4 GND | Ground Reference | Primary signal and power return; must be low-impedance connection for stable timing and ECC operation |
| 5 DI (IO0) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI; accepts commands, addresses, and load data |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; rising edge for input, falling edge for output; max 104MHz frequency |
| 7 /HOLD (IO3) | Hold Input / I/O3 | Pauses Standard/Dual SPI transfers when low; becomes I/O3 in Quad SPI; requires external pull-up to avoid floating |
| 8 VCC | Power Supply | 2.7V–3.6V single supply; powers core logic, I/O buffers, and internal ECC engine |
Key Features
| Feature | Design Value |
|---|---|
| Buffer vs Sequential Read Mode | Configurable via BUF bit (SR-2[7]); enables single-command full-array access (Sequential) or optimized burst reads (Buffer) |
| Programmable Output Driver Strength | ODS[1:0] bits (SR-2[5:4]) adjust drive capability to match PCB trace impedance and reduce signal integrity issues |
| Dual/Quad I/O Flexibility | Same physical pins support Standard/Dual/Quad SPI; eliminates need for separate interface routing or glue logic |
| OTP-Lockable Protection Registers | BP[3:0], WP-E, SRP[1:0] bits can be permanently locked via OTP to prevent accidental or malicious register modification |
| Unique ID & Parameter Pages | One factory-programmed Unique ID page and one user-configurable Parameter page support secure boot and field calibration |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Image |
|---|---|
|
Use Scenario: Storing firmware images and configuration data in programmable logic controllers deployed in factory automation environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Non-volatile code storage and XIP-capable execution source; provides deterministic 50MB/s sequential read for fast boot and firmware updates. Use Value: 60,000 P/E cycles and 10-year retention ensure long-term reliability without field replacement; on-chip ECC prevents silent corruption in mission-critical control sequences. |
Use Scenario: Hosting certified boot loader and diagnostic application binaries in portable ultrasound and infusion pump systems requiring regulatory-compliant data integrity. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository with Unique ID and OTP pages used for cryptographic binding and version validation. Use Value: Hardware write-protection (WP-E=1) and OTP-lockable SRP bits enforce immutable boot policy; -40°C to +85°C rating supports clinical deployment across diverse ambient conditions. |
| Smart Meter Data Logging | Automotive Infotainment Cache |
|
Use Scenario: Recording time-stamped energy consumption metrics and event logs in ANSI C12.19-compliant smart meters operating unattended for 15+ years. IC Role / Device Role / Timing Role: High-endurance NAND storage with 128KB block erase granularity enabling efficient wear leveling across 2,048 blocks. Use Value: 2µA deep power-down current extends battery life during grid outages; ECC status bits (ECC-1/ECC-0) allow host to detect and isolate marginal cells before failure. |
Use Scenario: Caching map tiles, voice prompts, and UI assets in automotive head units where rapid random access and thermal resilience are critical. IC Role / Device Role / Timing Role: Low-latency flash cache interfaced via Quad SPI at 104MHz; supports Fast Read Quad I/O (6Bh/6Ch) for sub-100ns access to cached assets. Use Value: 8-pin WSON 8x6-mm footprint minimizes PCB area in dense infotainment modules; 2.7V–3.6V supply tolerates automotive battery transients without external regulators. |
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 | 4G-bit QspiNAND; identical 8-pin WSON 8x6-mm package; supports 104MHz Quad SPI but lacks configurable BUF mode and extended ECC status reporting (BFR/MBF) | No native sequential read mode; requires host-side address management for full-array access; no BFD/BFS registers for ECC health monitoring | Select when BUF mode and ECC diagnostics are not required; verify host driver compatibility with MX35's instruction set divergence (e.g., different reset sequence) |
| Micron MT29F4G08ABAEAWP-AIT | 4G-bit SLC NAND with x8 parallel interface; requires dedicated NAND controller, not SPI-native; includes on-die ECC but no SPI-compatible command set | Not pin- or protocol-compatible; mandates redesign of interface logic, timing control, and error handling stack | Consider only for legacy NAND controller platforms; avoid for SPI-based designs due to fundamental interface mismatch and board-level redesign cost |
Compared with MX35LF4GEIM-12G, W25N04KVTCIU offers superior firmware update efficiency via sequential read mode and richer ECC observability; versus MT29F4G08ABAEAWP-AIT, it eliminates NAND controller dependency and reduces BOM count by integrating SPI protocol logic and ECC engine on-die.
Availability
W25N04KVTCIU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot image hosting, and smart meter data logging requiring stable component supply, long-lifecycle assurance, and guaranteed traceable sourcing.
Supply support for W25N04KVTCIU 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 for industrial, automotive, and consumer markets.
The W25N QspiNAND product line was designed to replace parallel NAND in SPI-constrained systems, delivering NAND density with SPI simplicity, integrated ECC, and industrial-grade reliability-exemplified by the W25N04KVTCIU's 60K-cycle endurance and -40°C to +85°C operation.
FAQ
What is the package type and footprint of W25N04KVTCIU?
W25N04KVTCIU uses an 8-pad WSON 8×6-mm package (Package Code ZE) with exposed thermal pad. It has standard 0.5mm pitch and matches JEDEC MO-241AC dimensions. This compact footprint supports high-density PCB layouts in space-constrained applications like portable medical devices and smart meters, and is compatible with reflow soldering per J-STD-020.
Does W25N04KVTCIU support Quad SPI operation and what are the pin assignments?
Yes, W25N04KVTCIU supports Quad SPI using IO0 (DI), IO1 (DO), IO2 (/WP), and IO3 (/HOLD) - pins 5, 2, 3, and 7 respectively. In Quad mode, /WP and /HOLD lose their protective functions and become bidirectional data lines; the device executes Fast Read Quad I/O (EBh/ECh) at up to 416MHz equivalent bandwidth, enabling high-throughput asset caching.
How does the on-chip ECC work in W25N04KVTCIU and how is it configured?
W25N04KVTCIU integrates an 8-bit on-chip ECC engine that automatically corrects up to 8-bit errors per 512-byte sector. ECC is enabled via the ECC-E bit (SR-2[6]); status is reported in SR-3 (ECC-1/ECC-0) and extended registers (BFD/BFS/BFR/MBF). This eliminates need for external ECC logic and allows host software to monitor bit-flip trends for predictive wear leveling.
What is the difference between Buffer Read and Sequential Read modes in W25N04KVTCIU?
Buffer Read mode (BUF=1, default) uses the internal 2,048-byte buffer for burst reads with standard SPI addressing; Sequential Read mode (BUF=0) allows reading the entire memory array with a single Read command and auto-incrementing address. Sequential mode simplifies host firmware for full-image loads and reduces instruction overhead by >70% in large-data scenarios.
Can W25N04KVTCIU be used for execute-in-place (XIP) applications?
Yes, W25N04KVTCIU supports XIP via Dual/Quad SPI Fast Read instructions (3Bh/3Ch/BBh/BCh/EBh/ECh), enabling direct code execution from flash without copying to RAM. Its 104MHz clock and 50MB/s sequential throughput meet real-time latency requirements for industrial HMI and automotive infotainment boot sequences.
W25N04KVTCIU 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)
W25N04KVTCIU FAQ
1.How can I place an order for W25N04KVTCIU through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N04KVTCIU 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 W25N04KVTCIU reliable?
The price and inventory of W25N04KVTCIU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N04KVTCIU is usually 5 days.
3.What payment methods are accepted for W25N04KVTCIU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N04KVTCIU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N04KVTCIU?
W25N04KVTCIU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N04KVTCIU 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 W25N04KVTCIU?
For technical support, including W25N04KVTCIU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N04KVTCIU requirements.
6.How does Aetrix verify that W25N04KVTCIU is sourced from the original manufacturer or authorized distributors?
All W25N04KVTCIU 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 W25N04KVTCIU meets industry standards.
7.What is the process for return or replacement of W25N04KVTCIU?
All W25N04KVTCIU units undergo pre-shipment inspection (PSI). If there is an issue with W25N04KVTCIU, 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 W25N04KVTCIU part is unused and in its original packaging.
Return procedure for W25N04KVTCIU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25N04KVTCIU Tags
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