Winbond Electronics Corporation W25N02JWZEIC TR

Overview

W25N02JWZEIC 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 read modes, 128KB uniform block erase, and on-chip 1-bit ECC. It delivers 80MB/s continuous data transfer in Continuous Read Mode and targets embedded code storage and firmware update applications in space-constrained industrial controllers.

For engineers reviewing the W25N02JWZEIC TR datasheet, W25N02JWZEIC TR pinout, W25N02JWZEIC TR application, or W25N02JWZEIC TR equivalent, key selection criteria include 2G-bit density, WSON-8 (8×6 mm) package compatibility, 1.7–1.95V supply operation, BUF-mode default configuration, and support for DTR Fast Read Quad I/O instructions.

Technical Context

The W25N02JWZEIC TR implements a true SLC NAND architecture organized into 131,072 pages of 2,048 bytes each, grouped into 2,048 erasable 128KB blocks. It uses standard SPI command sets extended with Dual/Quad I/O and DTR variants, enabling high-throughput sequential access without address reissuing.

Its internal ECC engine corrects single-bit errors per 528-byte sector and reports status via dedicated ECC-1/ECC-0 bits in Status Register-3. Bad block management is handled via an on-chip Look-Up Table (LUT), accessible through A5h instruction, with initial invalid blocks pre-programmed at factory.

Key Specifications

Pinout & Package

W25N02JWZEIC TR is housed in an 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE), optimized for high-density PCB layouts and thermal performance in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N01JWZEIC TR and GD5F2GQ4UCYIGR, the W25N02JWZEIC TR provides higher density within identical mechanical and electrical constraints while retaining integrated ECC and LUT-based bad block management - delivering drop-in scalability for next-generation firmware storage without redesigning flash management firmware.

Availability

W25N02JWZEIC TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot image retention, smart meter application code hosting, and edge gateway OTA update caching requiring stable component supply across long production lifecycles.

Supply support for W25N02JWZEIC 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 manufacturer specializing in specialty memory solutions, including SPI NOR/NAND flash, RAM, and trusted computing devices.

The W25N SpiFlash family was designed specifically to replace parallel NAND in resource-constrained embedded systems, delivering NAND density with SPI simplicity, integrated ECC, and industrial-grade reliability.

FAQ

What is the default BUF mode setting for W25N02JWZEIC TR after power-up?

The W25N02JWZEIC TR defaults to Buffer Read Mode (BUF = 1) upon power-up, as indicated by its 'G' suffix in the part numbering convention. This mode enables faster random-access reads using the internal 2KB buffer, and the setting can be changed dynamically via Write Status Register (1Fh) instruction to enable Continuous Read Mode (BUF = 0) for linear streaming.

Does W25N02JWZEIC TR support DTR (Double Transfer Rate) commands?

Yes, W25N02JWZEIC TR supports DTR commands including DTR Fast Read (0Dh), DTR Fast Read Dual I/O (BDh), and DTR Fast Read Quad I/O (EDh), operating up to 80MHz clock frequency. These commands transfer addresses and data on both rising and falling clock edges, effectively doubling data throughput without increasing clock speed - critical for high-speed firmware loading.

How does the on-chip ECC in W25N02JWZEIC TR function?

The W25N02JWZEIC TR integrates hardware ECC that corrects single-bit errors per 528-byte sector. ECC status is reported in Status Register-3 (Cxh) via ECC-1/ECC-0 bits, indicating no error, corrected error, or uncorrectable error. ECC is enabled by default and configurable via the ECC-E bit in Status Register-2 (Bxh), eliminating need for host-side correction logic in most applications.

What package type is used for W25N02JWZEIC TR?

W25N02JWZEIC TR uses the 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE), with exposed thermal pad for enhanced heat dissipation. Pin assignments match the standard W25N family layout: /CS, CLK, IO0–IO3, VCC, VSS, and NC. This package supports reflow soldering and meets IPC/JEDEC J-STD-020 moisture sensitivity level 3.

Can W25N02JWZEIC TR be used as a direct replacement for W25N01JWZEIC TR?

W25N02JWZEIC TR is pin-compatible and electrically identical to W25N01JWZEIC TR in the same WSON-8 package, sharing identical command set, timing, and register map. The primary difference is density (2G-bit vs. 1G-bit); no PCB or firmware changes are required beyond adjusting address range handling - making it a seamless capacity upgrade path for existing designs.