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Winbond Electronics Corporation W25N01JWSFIT
- Part No.:
- W25N01JWSFIT
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25N01JWSFIT.pdf
- Description:
- IC FLASH 1GBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,898
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Product details
Overview
W25N01JWSFIT from Winbond is a 1.8V serial SLC NAND flash memory IC with 1G-bit (128MB) capacity, organized as 65,536 × 2,048-byte pages and 1,024 × 128KB erasable blocks. It supports Dual/Quad SPI and DTR (Double Transfer Rate) interfaces up to 166MHz STR / 80MHz DTR, delivers 80MB/s continuous read throughput, and integrates on-chip 1-bit ECC and Bad Block Management. It is used in embedded boot storage, firmware code shadowing, and industrial data logging where space-constrained, low-power, high-reliability non-volatile memory is required.
For engineers reviewing the W25N01JWSFIT datasheet, W25N01JWSFIT pinout, W25N01JWSFIT application, or W25N01JWSFIT equivalent, key selection criteria include its 1.7–1.95V supply range, BUF-mode configurable read architecture (default Buffer Read for -G suffix), 100,000 program/erase cycles, -40°C to +85°C operation, and support for JEDEC ID, Unique ID, and ten 2KB OTP pages.
Technical Context
The W25N01JWSFIT implements a true NAND flash architecture with page-based programming (2,048B/page), block-level erasure (128KB/block), and internal 2,048-byte data buffer. Its command set includes standard SPI, Dual/Quad I/O, and DTR variants - all sharing identical instruction opcodes but differing in clock edge usage and data lane count.
It features dual read modes: Buffer Read (default for W25N01JWSFIT, BUF=1) for page-aligned access, and Continuous Read (BUF=0) enabling seamless sequential reads across page boundaries without reissuing Page Data Read commands - critical for XIP-like code execution from flash.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Type | SLC NAND Flash - single-level cell architecture enabling higher endurance (100k cycles) and reliability vs. MLC/TLC. |
| Total Capacity | 1 G-bit (128 MB) - organized as 65,536 pages × 2,048 bytes, supporting efficient firmware image storage. |
| Interface Speed | 166 MHz STR / 80 MHz DTR - enables 332 Mbps (Dual) or 664 Mbps (Quad) effective bandwidth; DTR doubles data rate per clock cycle. |
| Read Throughput | 80 MB/s continuous - achieved in Continuous Read Mode, eliminating inter-page command overhead for linear access. |
| ECC & Reliability | On-chip 1-bit ECC - corrects single-bit errors per 528-byte sector; ECC status bits (ECC-1/ECC-0) report correction events. |
| Endurance & Retention | 100,000 P/E cycles / 10-year data retention - validated under 1.7–1.95V supply and -40°C to +85°C operation. |
| Power Supply | 1.70 V to 1.95 V - single-supply operation compatible with modern low-voltage SoCs and PMICs; 25 mA active / 10 µA standby current. |
Pinout & Package
W25N01JWSFIT is packaged in an 8-pad WSON 8×6-mm (Package Code ZE), RoHS-compliant, surface-mount package with wettable flanks. Pin assignments are defined per Figure 3-1 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select | Active-low enable for SPI communication; must be asserted before clocking instructions. |
| CLK | Serial Clock | Input clock driving all SPI transactions; supports up to 166 MHz STR or 80 MHz DTR timing. |
| IO0 (DI) | Serial Data Input | Primary input for commands, addresses, and program data in Standard/Dual/Quad modes. |
| IO1 (DO) | Serial Data Output | Primary output for read data and status in Standard/Dual modes; bidirectional in Quad mode. |
| IO2 (/WP) | Write Protect Input | Hardware write protection; when low, disables write/erase instructions unless SRP0/SRP1 are cleared. |
| IO3 (/HOLD) | Hold Input | Pauses ongoing SPI transfer without deselecting device; retains internal state during hold period. |
| /RESET | Hardware Reset | Asynchronous active-low reset that clears internal logic and returns device to power-on state. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode (BUF=0) | Enables uninterrupted sequential reads across page boundaries using a single Read command - eliminates latency from repeated Page Data Read issuance in code shadowing. |
| Buffer Read Mode (BUF=1, default) | Optimizes random-access performance by loading full 2,048-byte pages into internal buffer before read-out - ideal for fragmented firmware updates. |
| Dual Transfer Rate (DTR) | Transfers address and data on both rising and falling clock edges, doubling effective bandwidth at same clock frequency - critical for high-speed streaming applications. |
| On-chip 1-bit ECC | Automatically detects and corrects single-bit errors per 528-byte sector without host intervention - reduces firmware complexity and improves field reliability. |
| Bad Block Management (BBM) | Hardware-assisted invalid block tracking via Look-Up Table (LUT); supports automatic replacement mapping and LUT read access (A5h instruction). |
Applications
| Industrial HMI Firmware Storage | Medical Device Boot Memory |
|---|---|
Use Scenario: Storing boot loader and GUI firmware images in panel-mounted HMIs operating in wide-temperature industrial environments. IC Role / Device Role / Timing Role: Primary non-volatile boot memory providing fast, reliable code fetch via Continuous Read Mode for deterministic startup. Use Value: 80 MB/s continuous read throughput and -40°C to +85°C rating ensure rapid, fail-safe boot under thermal stress without external ECC handling. |
Use Scenario: Holding certified medical firmware and calibration data in portable diagnostic equipment requiring long-term data integrity. IC Role / Device Role / Timing Role: Secure, high-endurance storage with on-chip ECC and 10-year retention for FDA-regulated software binaries and logs. Use Value: 100,000 P/E cycles and OTP pages allow secure field updates and immutable parameter storage compliant with IEC 62304. |
| Smart Meter Code Shadowing | Automotive Telematics Log Buffer |
Use Scenario: Executing metering application code directly from flash in utility smart meters with constrained PCB area and power budgets. IC Role / Device Role / Timing Role: Low-voltage (1.8V) NAND flash enabling XIP-like execution via Continuous Read Mode to minimize RAM footprint. Use Value: 1.7–1.95V operation and 10 µA standby current extend battery life while maintaining deterministic read latency for time-critical metering tasks. |
Use Scenario: Capturing CAN bus diagnostics and GPS logs in automotive telematics units exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: High-reliability data logger using Bad Block Management and ECC to sustain integrity across 10+ years of vehicle service life. Use Value: Hardware BBM LUT and ECC status reporting simplify host firmware validation of stored logs without custom wear-leveling algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NAND flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MT29F1G01ABAGDWB-IT | 3.3V supply, 100 MHz max SPI clock, no DTR support, 48-pin TSOP package. | Requires level-shifting for 1.8V systems; lacks Continuous Read Mode and DTR for high-throughput streaming. | Select only if legacy 3.3V design compatibility or TSOP footprint is mandatory. |
| GD5F1GQ4UCYIGR | 1.8V supply, 100 MHz SPI, no DTR, no on-chip ECC, requires external ECC controller. | Lacks integrated ECC and BBM - increases host MCU firmware complexity and validation burden. | Choose only when cost sensitivity outweighs reliability and development time trade-offs. |
Compared with MT29F1G01ABAGDWB-IT and GD5F1GQ4UCYIGR, W25N01JWSFIT provides superior integration (on-chip ECC, BBM, DTR, dual read modes) and tighter voltage/temperature compliance - reducing system-level design effort and improving field robustness in space- and power-constrained embedded applications.
Availability
W25N01JWSFIT is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical device boot memory, and smart meter code shadowing requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for W25N01JWSFIT 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, RAM, and trusted computing products since 1987.
The W25N SpiFlash family was designed specifically to bring NAND density and cost-efficiency to SPI-based embedded systems - bridging the gap between traditional SPI NOR flash and parallel NAND, with integrated manageability features.
FAQ
What is the default read mode for W25N01JWSFIT after power-up?
W25N01JWSFIT powers up in Buffer Read Mode (BUF=1) as indicated by its "G" suffix in the part number. This mode loads each 2,048-byte page into the internal buffer before read-out, optimizing random-access performance. The mode can be changed via the BUF bit (bit 0 of Status Register-2) using the Write Status Register instruction (1Fh/01h). Continuous Read Mode (BUF=0) is enabled for seamless sequential access across page boundaries.
Does W25N01JWSFIT require external ECC hardware or software?
No, W25N01JWSFIT includes on-chip 1-bit ECC capable of detecting and correcting single-bit errors per 528-byte sector. The ECC Enable bit (ECC-E, bit 4 of Status Register-2) controls activation, and cumulative ECC status (ECC-1/ECC-0 bits in Status Register-3) reports correction events. This eliminates the need for external ECC controllers or host-side software correction in most embedded applications.
How does the Bad Block Management (BBM) function in W25N01JWSFIT?
W25N01JWSFIT implements hardware-assisted BBM using a Look-Up Table (LUT) stored in dedicated memory. The A1h instruction marks blocks as invalid, and the A5h instruction reads the LUT contents. Invalid blocks are managed automatically during program/erase operations, and the LUT is retained across power cycles. This simplifies host firmware development by offloading bad block tracking from the MCU.
What package type is used for W25N01JWSFIT?
W25N01JWSFIT uses the 8-pad WSON 8×6-mm package (Package Code ZE), a RoHS-compliant, surface-mount package with wettable flanks for enhanced solder joint inspection. It is pin-compatible with other W25N01JW variants in SOIC-300mil (SF) and TFBGA-24 (TB) packages, but W25N01JWSFIT specifically ships in the WSON variant.
Can W25N01JWSFIT operate in a 3.3V system?
No, W25N01JWSFIT is specified exclusively for 1.70 V to 1.95 V operation. Applying 3.3 V will exceed absolute maximum ratings and may cause permanent damage. It must be powered from a dedicated 1.8 V rail or regulated LDO. Level-shifting is required for interfacing with 3.3 V SPI controllers, and Winbond recommends using bidirectional voltage translators compatible with its timing specifications.
W25N01JWSFIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NAND (SLC)
- Memory Size:
- 1Gbit
- Memory Organization:
- 128M x 8
- Memory Interface:
- SPI - Quad I/O, DTR
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- 700µs
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W25N01JWSFIT FAQ
1.How can I place an order for W25N01JWSFIT through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N01JWSFIT 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 W25N01JWSFIT reliable?
The price and inventory of W25N01JWSFIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N01JWSFIT is usually 5 days.
3.What payment methods are accepted for W25N01JWSFIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N01JWSFIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N01JWSFIT?
W25N01JWSFIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N01JWSFIT 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 W25N01JWSFIT?
For technical support, including W25N01JWSFIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N01JWSFIT requirements.
6.How does Aetrix verify that W25N01JWSFIT is sourced from the original manufacturer or authorized distributors?
All W25N01JWSFIT 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 W25N01JWSFIT meets industry standards.
7.What is the process for return or replacement of W25N01JWSFIT?
All W25N01JWSFIT units undergo pre-shipment inspection (PSI). If there is an issue with W25N01JWSFIT, 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 W25N01JWSFIT part is unused and in its original packaging.
Return procedure for W25N01JWSFIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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