Winbond Electronics Corporation W25N02JWSFIC TR

Overview

W25N02JWSFIC TR from Winbond is a 1.8V 2G-bit Serial SLC NAND Flash Memory with Dual/Quad SPI interface, supporting up to 166MHz STR and 80MHz DTR operation. It features 128KB uniform block erase, on-chip 1-bit ECC, and dual read modes (Buffer Read and Continuous Read). It is used in embedded boot storage, firmware code shadowing, and industrial data logging where high-density serial NAND with JEDEC-compliant ID and OTP pages is required.

For engineers reviewing the W25N02JWSFIC TR datasheet, W25N02JWSFIC TR pinout, W25N02JWSFIC TR application, or W25N02JWSFIC TR equivalent, key selection criteria include 2G-bit density, WSON-8 package compatibility, 1.7–1.95V supply range, DTR timing support, and configurable BUF mode for continuous vs. page-aligned access.

Technical Context

The W25N02JWSFIC TR implements a standard SPI command set extended with Dual/Quad I/O and DTR protocols, enabling 664MB/s peak bandwidth via Quad I/O at 166MHz clock. Its memory array is organized into 131,072 × 2,048-byte pages across 2,048 erasable 128KB blocks, with internal ECC applied per 528-byte sector.

It supports two power-up default read modes: Buffer Read (BUF=1) and Continuous Read (BUF=0), controlled by Status Register-2 bit 5. The device integrates Bad Block Management with LUT access, programmable write protection (via /WP, /HOLD, and volatile/OTP lock bits), and ten 2KB one-time-programmable pages for calibration or security keys.

Key Specifications

Pinout & Package

W25N02JWSFIC TR is packaged in an 8-pad WSON 8×6-mm (Package Code ZE), RoHS-compliant, moisture-sensitive level 3 device with exposed pad thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NAND flash applications.

Compared with MT29F2G01ABAGDWB-IT and GD5F2GQ4UCYIGR, the W25N02JWSFIC TR uniquely delivers 1.8V operation with integrated ECC, DTR support, and dual read modes - reducing system-level validation effort and eliminating external ECC components while maintaining industrial temperature reliability.

Availability

W25N02JWSFIC TR is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, smart metering, and automotive infotainment applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25N02JWSFIC 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, and TrustME® secure flash memory solutions.

The W25N SpiFlash family was designed specifically to bring NAND density and cost-efficiency to SPI-based embedded systems - bridging the gap between NOR's simplicity and NAND's scalability without requiring complex NAND controllers.

FAQ

What is the default read mode for W25N02JWSFIC TR after power-up?

The W25N02JWSFIC TR defaults to Buffer Read mode (BUF=1) at power-up, as indicated by its "G" suffix in the part numbering scheme. This behavior is controlled by bit 5 of Status Register-2 and can be changed dynamically via Write Status Register instruction (1Fh). The alternative Continuous Read mode (BUF=0) is used for linear firmware shadowing and requires explicit register configuration.

Does W25N02JWSFIC TR support DTR (Double Transfer Rate) commands?

Yes, W25N02JWSFIC TR supports DTR commands including DTR Fast Read (0Dh), DTR Fast Read Dual I/O (BDh), and DTR Fast Read Quad I/O (EDh), all operating up to 80MHz clock frequency. These commands transfer addresses and data on both clock edges, effectively doubling bandwidth without increasing clock speed - confirmed in Section 8.2.29–8.2.35 of the datasheet.

How many OTP pages does W25N02JWSFIC TR provide, and what is their size?

W25N02JWSFIC TR provides ten 2,048-byte OTP (One-Time-Programmable) pages, accessible only when OTP-E bit (bit 1 of Status Register-2) is set. These pages are used for storing immutable data such as cryptographic keys, calibration coefficients, or device-specific identifiers - and cannot be erased or rewritten once programmed.

What package type is used for W25N02JWSFIC TR, and is it RoHS-compliant?

W25N02JWSFIC TR uses the 8-pad WSON 8×6-mm package (Package Code ZE), with exposed thermal pad and lead-free, RoHS-compliant construction. This package meets JEDEC MS-012 standards and is rated MSL Level 3 per J-STD-020, requiring bake prior to reflow if exposed beyond floor life.

Is on-chip ECC enabled by default in W25N02JWSFIC TR, and how is it configured?

Yes, on-chip 1-bit ECC is enabled by default in W25N02JWSFIC TR via the ECC-E bit (bit 4 of Status Register-2), which powers up set. ECC operates automatically during read operations across all 528-byte sectors; status bits ECC-1/ECC-0 in Status Register-3 indicate correction activity or uncorrectable errors - no host-side ECC engine is required.