Winbond Electronics Corporation W25N01GWZEIT TR

Overview

W25N01GWZEIT TR 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 Standard/Dual/Quad SPI interfaces up to 104MHz clock, delivers 40MB/s continuous read throughput in Continuous Read Mode (BUF=0 default), and integrates on-chip 1-bit ECC, bad block management, and OTP/Unique ID pages for embedded storage applications including boot code storage and firmware updates.

For engineers reviewing the W25N01GWZEIT TR datasheet, W25N01GWZEIT TR pinout, W25N01GWZEIT TR application, or W25N01GWZEIT TR equivalent, key selection considerations include its WSON-8 (8×6mm, ZE) package, 1.70–1.95V supply range, -40°C to +85°C industrial temperature rating, hardware/software write protection via /WP and status registers, and dual-mode buffer vs. continuous read operation.

Technical Context

The W25N01GWZEIT TR implements a true NAND architecture with page-based programming (2,048-byte internal buffer), uniform 128KB block erase, and JEDEC-compliant command set including Fast Read Quad I/O (6Bh/6Ch) and Bad Block Management (A1h). Its dual operational modes-Buffer Read (BUF=1) and Continuous Read (BUF=0)-are controlled by Status Register-2 bit 5, with W25N01GWZEIT TR factory-configured for BUF=0 at power-up.

It features three configurable protection layers: volatile Block Protect bits (BP3–BP0), OTP-lockable Write Protection Enable (WP-E), and Status Register Protect (SRP1/SRP0); combined with dedicated /WP and /HOLD pins that double as Quad SPI I/Os (IO2/IO3) when not used for hardware control. ECC status (ECC-1/ECC-0) and program/erase failure flags (P-FAIL/E-FAIL) are reported in Status Register-3.

Key Specifications

Pinout & Package

W25N01GWZEIT TR is packaged in an 8-pad WSON (8×6mm, package code ZE), with exposed thermal pad (not electrically connected). Pin 4 is GND and Pin 8 is VCC; all I/Os are 1.8V-tolerant and support standard/dual/quad SPI signaling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF1GE4AB, W25N01GWZEIT TR offers superior ease of integration via native Continuous Read Mode and on-chip BBM, while MT29F1G01ABAGDWB demands full interface and layout overhaul-making W25N01GWZEIT TR the optimal choice for SPI-based embedded systems prioritizing firmware reliability and minimal host overhead.

Availability

W25N01GWZEIT TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and networking equipment configuration requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W25N01GWZEIT 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, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets 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 serial NOR flash simplicity and NAND storage scalability without requiring complex NAND controllers.

FAQ

What is the default read mode for W25N01GWZEIT TR at power-up?

W25N01GWZEIT TR powers up in Continuous Read Mode (BUF=0), as indicated by the "IT" suffix in its part number. This mode enables linear, single-command access across the entire memory array-ideal for code shadowing and XIP applications-without requiring repeated Page Data Read (13h) instructions between pages.

Does W25N01GWZEIT TR support Quad SPI commands, and what pins are used?

Yes, W25N01GWZEIT TR supports Quad SPI commands including Fast Read Quad I/O (6Bh/6Ch) and Quad Load Program Data (32h/34h). In Quad mode, IO0 (DI), IO1 (DO), IO2 (/WP), and IO3 (/HOLD) function as bidirectional data lines; /WP and /HOLD lose their hardware control roles unless WP-E=1 is set in the protection register.

How does the on-chip ECC in W25N01GWZEIT TR operate, and how is its status reported?

W25N01GWZEIT TR includes built-in 1-bit ECC per 528-byte sector, correctable in hardware without host intervention. ECC status is reported in Status Register-3 (Cxh) via ECC-1/ECC-0 bits: 00 = no error, 01 = single-bit correction applied, 10 = uncorrectable multi-bit error. This enables real-time data integrity monitoring during read operations.

Can W25N01GWZEIT TR be used as a direct replacement for standard SPI NOR flash in existing designs?

No-W25N01GWZEIT TR is a serial SLC NAND flash with different command structure, erase granularity (128KB blocks vs. 4KB sectors), and mandatory bad block management. While it shares SPI pinout compatibility, NOR-to-NAND migration requires firmware changes to handle ECC, BBM, and page/block addressing-W25N01GWZEIT TR is not a pin- or function-compatible NOR substitute.

What write protection options are available on W25N01GWZEIT TR, and how are they configured?

W25N01GWZEIT TR provides three-tier protection: (1) Software via BP3–BP0 bits in Status Register-1, (2) Hardware via /WP pin when WP-E=1 (locks entire device), and (3) OTP lock via SRP1/SRP0 bits. Protection is configured by writing to Status Register-1 using instruction 1Fh; /WP must be tied low for hardware lock, and SRP bits require OTP programming to become permanent.