Winbond Electronics Corporation W25N01GVZEIR

Overview

W25N01GVZEIR from Winbond is a 1G-bit (128MB) Serial SLC NAND Flash memory with Dual/Quad SPI interface, organized into 65,536 pages of 2,048 bytes each and 1,024 uniform 128KB erasable blocks. It supports 104MHz SPI clocking, on-chip 1-bit ECC, hardware/software write protection, and operates from 2.7V–3.6V at -40°C to +85°C. It is used in embedded systems requiring code shadowing, XIP execution, or firmware storage where pin count and board space are constrained.

For engineers reviewing the W25N01GVZEIR datasheet, W25N01GVZEIR pinout, W25N01GVZEIR application, or W25N01GVZEIR equivalent, key selection criteria include its default Buffer Read mode (BUF=1), WSON 8x6-mm ZE package, continuous read capability, JEDEC ID compatibility, and OTP/Unique ID page support for secure firmware deployment.

Technical Context

The W25N01GVZEIR implements a standard SPI command set extended for Dual/Quad I/O operation using shared bidirectional pins (IO0–IO3), with dedicated /CS, CLK, /WP, and /HOLD control lines. Its architecture includes three volatile/OTP-configurable status registers (SR-1/SR-2/SR-3) governing block protection, ECC enablement, buffer mode, and OTP access - all accessible via 0Fh/05h and 1Fh/01h instructions.

It features two distinct read modes: Buffer Read (default at power-up for W25N01GVZEIR) requiring explicit Page Data Read (13h) before each page access, and Continuous Read (BUF=0) enabling sequential array access with a single Read (03h) command. ECC correction is performed internally per 528-byte sector, with status bits (ECC-1/ECC-0) reporting correction events.

Key Specifications

Pinout & Package

W25N01GVZEIR is packaged in an 8-pad WSON 8×6-mm (JEDEC MO-255, package code ZE), with exposed thermal pad. Pin 4 is GND and Pin 8 is VCC; all I/Os are CMOS-compatible and support 3.3 V signaling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MT29F1G01ABAGDWB-IT and GD5F1GQ4UCYIGR, the W25N01GVZEIR uniquely combines SPI-native command compatibility, dual read modes, integrated OTP/Unique ID, and hardware /WP support - enabling drop-in replacement in resource-constrained MCU-based systems without NAND controller ASICs.

Availability

W25N01GVZEIR is available at Aetrix Electronics and suitable for industrial HMI, medical diagnostics, smart metering, and automotive infotainment applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W25N01GVZEIR 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 SPI NOR/NAND flash, PSRAM, and TrustME® secure memory products.

The W25N SpiFlash family was designed specifically to bring NAND density and cost advantages to SPI-based microcontroller platforms - eliminating the need for complex NAND controllers while retaining ECC, bad block management, and security features.

FAQ

What is the default read mode for W25N01GVZEIR at power-up?

W25N01GVZEIR powers up in Buffer Read mode (BUF=1), meaning the Page Data Read (13h) instruction must be issued before each page access. This differs from the Continuous Read mode (BUF=0) used in W25N01GVxxxT variants. The BUF bit is configured in Status Register-2 (address Bxh) and can be changed via Write Status Register (1Fh) after initialization.

Does W25N01GVZEIR support hardware write protection via the /WP pin?

Yes, W25N01GVZEIR supports hardware write protection via the /WP pin when the Write Protection Enable (WP-E) bit in Status Register-1 is set to 1. In this mode, tying /WP to GND disables all program, erase, and register-write operations - making the entire device read-only, including OTP and Unique ID pages. When WP-E=0, /WP functions as IO2 in Quad SPI mode.

How many program/erase cycles does W25N01GVZEIR guarantee?

W25N01GVZEIR guarantees more than 100,000 program/erase cycles per block, validated under JEDEC JESD22-A117 conditions with on-chip 1-bit ECC enabled. This endurance rating assumes proper wear leveling in the host system and applies to both main array pages and OTP pages, though OTP pages are write-once and cannot be erased.

What package type does W25N01GVZEIR use, and what does 'ZE' signify?

W25N01GVZEIR uses the 8-pad WSON 8×6-mm package (JEDEC MO-255), with package code ZE. The 'ZE' suffix explicitly denotes this WSON variant - distinct from SF (SOIC 300-mil), TB (TFBGA 5×5), or TC (TFBGA 6×4). It features an exposed thermal pad and is RoHS-compliant, optimized for automated reflow assembly.

Can W25N01GVZEIR be used for Execute-in-Place (XIP) applications?

Yes, W25N01GVZEIR supports XIP in Dual and Quad SPI modes using Fast Read Dual/Quad I/O instructions (3Bh/3Ch/6Bh/6Ch), delivering up to 416MHz equivalent bandwidth. Its 104MHz clock limit, low-latency read modes, and ECC handling make it suitable for direct code execution in Cortex-M7/M33 and RISC-V SoCs - provided the host controller implements proper address remapping and ECC-aware fetch logic.