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Winbond Electronics Corporation W25N04KWTCIU TR
- Part No.:
- W25N04KWTCIU TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25N04KWTCIU TR.pdf
- Description:
- IC FLASH 4GBIT SPI/QUAD 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,506
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Product details
Overview
W25N04KWTCIU TR from Winbond is a 1.8V, 4G-bit (512MB) SLC QspiNAND Flash memory with Dual/Quad SPI interface, 128KB uniform block erase, on-chip 8-bit ECC, and support for Buffer Read and Sequential Read modes. It delivers 50MB/s sequential data transfer and operates across –40°C to +85°C in space-constrained embedded systems requiring code shadowing or XIP execution.
For engineers reviewing the W25N04KWTCIU TR datasheet, W25N04KWTCIU TR pinout, W25N04KWTCIU TR application, or W25N04KWTCIU TR equivalent, key selection considerations include 1.7–1.95V supply compatibility, 104MHz SPI clock support, OTP page programmability, hardware/software write protection, and TFBGA/WSON package options for high-density PCB layouts.
Technical Context
The W25N04KWTCIU TR 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 4,096 erasable 128KB blocks, enabling deterministic erase granularity and efficient wear leveling.
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 throughput. Internal ECC logic monitors bit flips per read, reporting status via dedicated registers (ECC-1/ECC-0, BFD/BFS/BFR), and allows user-configurable enable/disable via SR-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4G-bit (512M-byte) SLC NAND array - enables compact firmware storage without external controller overhead. |
| Interface | Dual/Quad SPI with standard instruction set - ensures drop-in compatibility with existing SPI flash drivers and boot ROMs. |
| Read Throughput | 50MB/s sequential transfer rate - supports real-time audio/video buffering and fast code loading in resource-limited hosts. |
| Erase/Program Endurance | 60,000 cycles per block - provides long-term reliability for field-updatable firmware in industrial gateways and IoT edge nodes. |
| Data Retention | 10 years at +85°C - guarantees integrity of stored calibration data, configuration profiles, and security keys over product lifetime. |
| Voltage Range | 1.70V to 1.95V single supply - simplifies power design with no auxiliary voltage rails required for I/O or core logic. |
| ECC Capability | On-chip 8-bit error correction with status reporting - eliminates need for external ECC engine or software correction in host MCU. |
Pinout & Package
W25N04KWTCIU TR is available in a 24-ball TFBGA 8x6-mm package (Package Code TC, 6×4 ball array), optimized for high-density routing and thermal performance in compact PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable signal; must transition high→low after power-up before accepting instructions; controls device power state (standby vs active). |
| CLK | Serial Clock Input | Timing reference for all SPI operations; supports up to 104MHz; rising edge latches input, falling edge samples output. |
| DI (IO0) | Data Input / Quad I/O 0 | Primary input for Standard/Dual SPI; bidirectional in Quad mode; used for instruction/address/data loading. |
| DO (IO1) | Data Output / Quad I/O 1 | Primary output for Standard/Dual SPI; bidirectional in Quad mode; carries read data, status, or ID responses. |
| /WP (IO2) | Write Protect Input / Quad I/O 2 | Hardware lock for Status Register and memory when WP-E=1; functions as IO2 in Quad mode when WP-E=0. |
| /HOLD (IO3) | Hold Input / Quad I/O 3 | Pauses ongoing Standard/Dual SPI transfers; becomes IO3 in Quad mode; requires external pull-up to prevent floating. |
| VCC | Power Supply | 1.70–1.95V core and I/O supply; powers internal charge pump, ECC engine, and buffer logic. |
| GND | Ground | Reference return path for all digital and analog circuitry; critical for noise immunity in high-speed SPI signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Sequential Read Mode | Single-command access to full memory array - reduces host CPU overhead and eliminates address management in streaming applications. |
| Configurable ECC | User-enabled 8-bit on-chip correction with real-time status reporting (BFD/BFS/BFR registers) - enables deterministic error handling without host intervention. |
| Flexible Write Protection | Software (BP bits + SRP) and hardware (/WP pin) protection - allows granular locking of OTP pages, parameter pages, or entire memory during field updates. |
| OTP Storage | Ten 2KB one-time-programmable pages - stores immutable keys, calibration coefficients, or device-specific identifiers with guaranteed write-once integrity. |
| Deep Power-Down | 2µA standby current with ABh/B9h command sequence - extends battery life in always-on sensor nodes and wearable devices. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Archive |
|---|---|
|
Use Scenario: Storing firmware images and safety-critical configuration parameters in DIN-rail mounted programmable logic controllers with no external NAND controller. IC Role / Device Role / Timing Role: Primary non-volatile code and data storage with XIP-capable Dual/Quad SPI interface and hardware write protection for certified firmware versions. Use Value: Eliminates need for external ECC processor or NAND controller IC while meeting IEC 61508 SIL-2 requirements via 10-year retention and 60K-cycle endurance. |
Use Scenario: Archiving calibrated sensor offsets, regulatory compliance logs, and patient-specific therapy settings in portable ultrasound and infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for immutable calibration data and audit trails using OTP pages and SRP-locked status registers. Use Value: Ensures traceability and data integrity under FDA 21 CFR Part 11 through hardware-enforced write protection and on-chip ECC verification. |
| Smart Meter Boot Image Repository | Automotive Telematics OTA Cache |
|
Use Scenario: Hosting boot loader, secure boot keys, and encrypted firmware update packages in ANSI C12.19-compliant electricity meters deployed in harsh outdoor environments. IC Role / Device Role / Timing Role: High-reliability flash memory supporting –40°C to +85°C operation, deep power-down for battery backup, and sequential read for fast boot initialization. Use Value: Achieves <100ms cold-boot time via Buffer Read mode and maintains 10-year data retention without refresh cycles in unattended deployments. |
Use Scenario: Caching signed firmware delta updates and vehicle configuration profiles in LTE-connected telematics control units (TCUs) with limited board space. IC Role / Device Role / Timing Role: Compact, low-power NAND replacement for legacy SPI NOR, enabling larger OTA payloads using 4G-bit density and Quad I/O bandwidth. Use Value: Reduces update download time by 4× versus 128Mb NOR via 50MB/s sequential read and supports A/B partitioning for fail-safe over-the-air upgrades. |
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 density, 1.8V, and TFBGA24 package; supports only Standard/Dual SPI (no Quad I/O); lacks Sequential Read mode and configurable ECC. | Suitable for cost-sensitive designs where 50MB/s throughput and advanced ECC are not required; requires host-side error correction. | Select when Quad SPI bandwidth and on-chip ECC are non-critical and BOM cost is prioritized over feature flexibility. |
| Micron MT29F4G08ABAEAWP-AIT | 4G-bit SLC NAND with ONFI 2.3 interface; requires dedicated NAND controller; no native SPI interface; higher pin count (48-pin TSOP); no integrated ECC engine. | Targeted at systems with existing NAND controller IP; incompatible with SPI-only hosts; demands additional layout area and power sequencing. | Choose only if migrating from legacy parallel NAND and controller hardware is already in place; not a drop-in replacement for SPI-based designs. |
Compared with MX35LF4GEIM-12G and MT29F4G08ABAEAWP-AIT, the W25N04KWTCIU TR uniquely combines SPI simplicity with NAND density, delivering Quad I/O bandwidth, user-configurable ECC, and Sequential Read-enabling faster boot, smaller footprint, and reduced host processing load in new embedded designs.
Availability
W25N04KWTCIU TR is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, smart metering, and automotive telematics applications requiring stable component supply, long lifecycle support, and qualified sourcing for production ramp.
Supply support for W25N04KWTCIU 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 global supplier of specialty DRAM, mobile DRAM, Code Storage Flash Memory, and TrustME® secure flash solutions.
The W25N QspiNAND product line was designed to replace parallel NAND and legacy SPI NOR in space-constrained, low-power embedded systems-delivering NAND density with SPI ease-of-use, integrated ECC, and industrial-grade reliability.
FAQ
What is the operating voltage range for W25N04KWTCIU TR?
The W25N04KWTCIU TR operates from 1.70V to 1.95V on a single supply rail. This narrow 1.8V nominal range eliminates the need for level shifters or dual-voltage regulators, simplifying power design in battery-powered and energy-harvesting applications. All timing specifications, including 104MHz SPI clock support and 25mA active current, are guaranteed across this full voltage window.
Does W25N04KWTCIU TR support Quad SPI commands out of the box?
Yes, W25N04KWTCIU TR supports Quad SPI natively via IO0–IO3 pins and Fast Read Quad I/O instructions (e.g., EBh/ECh). No configuration register setting is required to enable Quad mode-operation depends solely on the instruction opcode and host timing. However, /WP and /HOLD revert to I/O2/I/O3 in Quad mode and cannot perform hardware protection during active Quad transfers.
How does the Sequential Read Mode in W25N04KWTCIU TR differ from standard Buffer Read?
Sequential Read Mode (enabled by clearing BUF bit in SR-2) allows continuous read access across page boundaries with a single command and no address reissuing-ideal for streaming large binaries. In contrast, Buffer Read (BUF=1) reads only within a single 2,048-byte page unless manually incremented. Sequential Read eliminates host address management overhead and improves effective throughput in linear data access patterns.
Can the ten OTP pages in W25N04KWTCIU TR be erased or rewritten?
No, the ten 2KB OTP pages in W25N04KWTCIU TR are one-time programmable and cannot be erased or rewritten after initial programming. Once written, their contents are permanently locked. This ensures immutability of cryptographic keys, calibration constants, or device serial numbers. Programming is performed using standard SPI write instructions after enabling OTP access mode (OTP-E=1) and verifying OTP-L status.
What package type does W25N04KWTCIU TR use, and is it RoHS compliant?
W25N04KWTCIU TR uses a 24-ball TFBGA 8x6-mm package with a 6×4 ball array (Package Code TC), featuring lead-free, RoHS-compliant construction and halogen-free molding compound. The package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and supports standard reflow soldering profiles, making it suitable for high-volume automated assembly in industrial and automotive manufacturing.
W25N04KWTCIU TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 24-TBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NAND (SLC)
- Memory Size:
- 4Gbit
- Memory Organization:
- 512M 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)
W25N04KWTCIU TR FAQ
1.How can I place an order for W25N04KWTCIU TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N04KWTCIU 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 W25N04KWTCIU TR reliable?
The price and inventory of W25N04KWTCIU TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N04KWTCIU TR is usually 5 days.
3.What payment methods are accepted for W25N04KWTCIU TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N04KWTCIU TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N04KWTCIU TR?
W25N04KWTCIU TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N04KWTCIU 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 W25N04KWTCIU TR?
For technical support, including W25N04KWTCIU TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N04KWTCIU TR requirements.
6.How does Aetrix verify that W25N04KWTCIU TR is sourced from the original manufacturer or authorized distributors?
All W25N04KWTCIU 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 W25N04KWTCIU TR meets industry standards.
7.What is the process for return or replacement of W25N04KWTCIU TR?
All W25N04KWTCIU TR units undergo pre-shipment inspection (PSI). If there is an issue with W25N04KWTCIU 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 W25N04KWTCIU TR part is unused and in its original packaging.
Return procedure for W25N04KWTCIU TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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