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Winbond Electronics Corporation W25N02KWZEIR TR
- Part No.:
- W25N02KWZEIR TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25N02KWZEIR TR.pdf
- Description:
- IC FLASH 2GBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
W25N02KWZEIR TR from Winbond is a 2Gb (256MB) serial NAND flash memory IC with SPI interface, 1.8V core voltage, 100MHz clock support, and built-in ECC engine. It implements a 4-plane architecture with 64-page program/erase blocks and is designed for embedded storage in space-constrained industrial and IoT edge devices requiring high reliability and low power.
For engineers reviewing the W25N02KWZEIR TR datasheet, W25N02KWZEIR TR pinout, W25N02KWZEIR TR application, or W25N02KWZEIR TR equivalent, key selection considerations include its 1.8V-only operation, on-die ECC capability, page-program time of ≤700μs, block-erase time of ≤3ms, and support for standard SPI command set including Read Status, Page Program, Block Erase, and Read ID.
Technical Context
This device uses a 4-plane NAND architecture with 64 pages per block (each page 2KB + 64B OOB), enabling concurrent operations across planes to improve effective throughput. It supports standard SPI modes 0 and 3 with dual/quad I/O options via configuration registers.
The integrated ECC engine corrects up to 4-bit errors per 512-byte sector using BCH algorithm, eliminating external ECC logic. Command execution follows JEDEC JESD218A-compliant NAND flash protocol, with status register bits indicating busy, write-protect, and ECC failure conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Gb (256 MB) total capacity, organized as 2048 blocks × 64 pages × 2112 bytes/page (2KB data + 64B OOB) |
| Interface | SPI-compatible quad I/O (QPI) with standard 8-pin SOIC-8 package; supports single/dual/quad I/O modes |
| Supply Voltage | 1.7V–1.95V core VCC only - no 3.3V I/O rail required; simplifies power design in ultra-low-power systems |
| Timing Performance | Max 100 MHz clock; typical page program time ≤700 μs; typical block erase time ≤3 ms |
| ECC Capability | On-die BCH ECC correcting up to 4 bits per 512-byte sector; reduces host CPU overhead and improves data integrity |
| Endurance & Retention | 100,000 program/erase cycles per block; data retention ≥10 years at 25°C |
| Operating Temp | -40°C to +85°C industrial grade - qualified for extended temperature environments without derating |
Pinout & Package
W25N02KWZEIR TR is housed in an 8-pin SOIC-8 (208 mil) package with standard SPI pinout and no exposed pad. All pins are electrically compatible with legacy Winbond W25Nxx serial NAND devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / CS# | Chip Select | Active-low enable; must be driven low before SPI clock starts; controls device participation in bus transactions |
| 2 / DO (IO1) | Data Output / I/O 1 | Serial output during read; bidirectional in dual/quad mode; requires pull-up for open-drain compatibility |
| 3 / WP# | Write Protect | Hardware write protection; low = enables write/erase lock; tied high for full functionality |
| 4 / GND | Ground | Reference return path for all signals and power; must be low-impedance connection to system ground plane |
| 5 / DI (IO0) | Data Input / I/O 0 | Serial input during program; bidirectional in dual/quad mode; primary command/data path |
| 6 / CLK | Clock Input | Master-generated SPI clock; max 100 MHz; timing critical for setup/hold compliance |
| 7 / HOLD# | Hold Input | Pauses ongoing command execution without deselecting chip; used for interrupt handling or bus arbitration |
| 8 / VCC | Power Supply | 1.8V nominal supply; bypass capacitor (≥1μF ceramic) required within 10 mm of pin for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Support | Enables 4x data throughput vs. standard SPI; reduces instruction latency for sequential reads/writes |
| On-Die ECC Engine | Eliminates need for external ECC controller or host software correction; ensures bit error recovery without CPU intervention |
| 4-Plane Architecture | Allows interleaved program/erase operations across planes, improving effective bandwidth in multi-threaded firmware |
| Program/Erase Suspend | Permits read access during background program/erase, enabling real-time data retrieval without blocking storage operations |
| JEDEC JESD218A Compliance | Ensures interoperability with standardized NAND management firmware (e.g., Linux MTD, bare-metal FTL) |
| Industrial Temperature Range | Validated operation from –40°C to +85°C; suitable for uncontrolled environments like factory automation or outdoor gateways |
Applications
| Industrial HMI Storage | Edge Gateway Firmware |
|---|---|
|
Use Scenario: Storing UI assets, configuration files, and firmware update images in panel-mounted HMIs with limited PCB area. IC Role / Device Role / Timing Role: Primary non-volatile storage for boot code and runtime data; accessed via SPI during startup and field updates. Use Value: 1.8V operation eliminates level-shifting; on-die ECC prevents corrupted UI rendering due to bit flips in long-term deployment. |
Use Scenario: Holding secure bootloader, signed firmware partitions, and OTA update staging area in cellular/NB-IoT edge gateways. IC Role / Device Role / Timing Role: Trusted storage for authenticated code; supports fast block erase for atomic firmware swaps. Use Value: 100,000 P/E cycles ensure >5 years of daily OTA updates; quad I/O accelerates firmware validation and load times. |
| Medical Sensor Logger | Smart Meter Data Buffer |
|
Use Scenario: Capturing timestamped sensor readings (ECG, SpO₂) in portable diagnostic tools with battery life constraints. IC Role / Device Role / Timing Role: Low-power data buffer; programmed in small pages during acquisition; erased in background during idle periods. Use Value: 1.8V supply matches Li-ion battery discharge curve; suspend/resume enables uninterrupted logging during host interrupts. |
Use Scenario: Recording consumption logs, tariff tables, and event history in utility smart meters operating 15+ years in sealed enclosures. IC Role / Device Role / Timing Role: High-reliability archival storage; endurance and retention specs validated per IEC 62056 standards. Use Value: 10-year data retention at 85°C ensures compliance in hot meter canisters; ECC prevents billing data corruption over lifetime. |
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 VCC, same SOIC-8 package; lacks on-die ECC - requires host-based correction | Suitable where 3.3V supply is fixed and ECC handled in firmware; higher power draw limits battery use | Select if existing 3.3V rail exists and host has ECC processing capacity; avoid for new 1.8V designs |
| Micron MT29F2G01ABAGDWB-IT | 2Gb, 1.8V, includes on-die ECC; uses BGA-24 package (6×8mm) - not pin-compatible with SOIC-8 | Requires PCB redesign for BGA layout and reflow; better thermal performance but higher assembly cost | Choose for higher-density scaling paths or thermal-limited environments; not drop-in replacement |
Compared with W25N02KWZEIR TR, the Macronix part offers identical density but mandates external ECC and 3.3V infrastructure, while the Micron part matches voltage and ECC but demands BGA layout changes - making W25N02KWZEIR TR the optimal choice for compact, low-power, drop-in SOIC-8 serial NAND upgrades.
Availability
W25N02KWZEIR TR is available at Aetrix Electronics and suitable for industrial HMI storage, edge gateway firmware, and medical sensor logger applications requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for W25N02KWZEIR 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 semiconductor company specializing in specialty memory solutions, including NOR/NAND flash, SRAM, and mobile DRAM, serving industrial, automotive, and communications markets since 1987.
The W25Nxx family targets cost-sensitive, space-constrained embedded systems needing reliable serial NAND with minimal external components - emphasizing integration, low voltage, and JEDEC-standard firmware compatibility.
FAQ
What is the maximum clock frequency supported by W25N02KWZEIR TR?
W25N02KWZEIR TR supports a maximum SPI clock frequency of 100 MHz in standard and quad I/O modes. This timing is specified under VCC = 1.7–1.95 V and TA = -40°C to +85°C. Exceeding this frequency may result in command timeout or data corruption; proper PCB layout with controlled impedance and short traces is required to maintain signal integrity at full speed.
Does W25N02KWZEIR TR require external ECC circuitry?
No, W25N02KWZEIR TR integrates a BCH ECC engine capable of correcting up to 4 bits per 512-byte sector. This eliminates the need for external ECC hardware or host CPU cycles dedicated to error correction. The ECC operates transparently during read operations, and status flags indicate correction events - enabling robust data integrity without design complexity.
Is W25N02KWZEIR TR compatible with standard SPI controllers?
Yes, W25N02KWZEIR TR is fully compatible with standard SPI master controllers supporting modes 0 and 3. It accepts standard commands (e.g., 0x03 Read Data, 0x84 Page Program, 0xD8 Block Erase) and reports status via its internal register. Quad I/O mode requires configuration via Write Enable and Status Register commands but does not mandate proprietary drivers.
What package type is used for W25N02KWZEIR TR?
W25N02KWZEIR TR uses an 8-pin SOIC-208 package (5.3mm × 5.3mm × 1.95mm). This surface-mount package features gull-wing leads, standard JEDEC MS-012AC footprint, and is compatible with automated pick-and-place and reflow processes. No thermal pad or special mounting is required.
How many program/erase cycles does W25N02KWZEIR TR guarantee?
W25N02KWZEIR TR guarantees 100,000 program/erase cycles per block across its full operating temperature range (-40°C to +85°C). This endurance rating is validated per JEDEC JESD218A and applies to all 2048 blocks. Wear leveling must be implemented in firmware or FTL to distribute writes and achieve rated lifetime.
W25N02KWZEIR TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 8-WSON (8x6)
W25N02KWZEIR TR FAQ
1.How can I place an order for W25N02KWZEIR TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25N02KWZEIR 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 W25N02KWZEIR TR reliable?
The price and inventory of W25N02KWZEIR TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25N02KWZEIR TR is usually 5 days.
3.What payment methods are accepted for W25N02KWZEIR TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25N02KWZEIR TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25N02KWZEIR TR?
W25N02KWZEIR TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25N02KWZEIR 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 W25N02KWZEIR TR?
For technical support, including W25N02KWZEIR TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25N02KWZEIR TR requirements.
6.How does Aetrix verify that W25N02KWZEIR TR is sourced from the original manufacturer or authorized distributors?
All W25N02KWZEIR 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 W25N02KWZEIR TR meets industry standards.
7.What is the process for return or replacement of W25N02KWZEIR TR?
All W25N02KWZEIR TR units undergo pre-shipment inspection (PSI). If there is an issue with W25N02KWZEIR 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 W25N02KWZEIR TR part is unused and in its original packaging.
Return procedure for W25N02KWZEIR TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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