Winbond Electronics Corporation W25N01GVZEIT TR

Overview

W25N01GVZEIT TR from Winbond is a 1G-bit (128MB) Serial SLC NAND Flash memory with Dual/Quad SPI interface, organized as 65,536 × 2,048-byte pages and 1,024 × 128KB erasable blocks. It operates from 2.7V to 3.6V, supports up to 104MHz SPI clock (416MHz equivalent in Quad I/O), delivers 50MB/s continuous read throughput, and features on-chip 1-bit ECC for memory array integrity. It is used in embedded boot storage, firmware code shadowing, and data logging where space-constrained SPI-based NAND is required.

For engineers reviewing the W25N01GVZEIT TR datasheet, W25N01GVZEIT TR pinout, W25N01GVZEIT TR application, or W25N01GVZEIT TR equivalent, key selection criteria include its default Continuous Read Mode (BUF=0), WSON-8 package compatibility, hardware/software write protection flexibility, and support for JEDEC ID, Unique ID, and OTP pages - all critical for secure, reliable NAND integration in industrial and automotive control systems.

Technical Context

The W25N01GVZEIT TR implements a dedicated NAND flash controller with integrated buffer management, supporting both Buffer Read (BUF=1) and Continuous Read (BUF=0) modes - the latter enabling seamless sequential access without repeated Page Data Read commands. Its command set includes full Dual/Quad I/O Fast Read variants (e.g., 6Bh/6Ch, EBh/ECh) and block-level erase (D8h), with status registers providing real-time ECC-0/1, P-FAIL/E-FAIL, and BUSY flags.

It uses a 2,048-byte internal page buffer for program operations and supports configurable protection via volatile BP[3:0] bits and OTP-lockable SRP[1:0], WP-E, and SR1-L bits. The /WP and /HOLD pins serve dual roles: dedicated control inputs in Standard/Dual SPI, and IO2/IO3 in Quad SPI - requiring host logic to manage mode-dependent pin behavior.

Key Specifications

Pinout & Package

W25N01GVZEIT TR is packaged in an 8-pad WSON 8×6-mm (JEDEC MO-252, package code ZE), with exposed thermal pad (non-electrical). Pin assignments are fixed and non-remappable; all signals operate at 3.3 V logic levels with CMOS-compatible drive strength.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF1GE4AB and MT29F1G08ABA, the W25N01GVZEIT TR provides SPI-native integration, lower pin count, built-in ECC and OTP, and seamless migration path from SPI NOR - making it optimal for new designs prioritizing layout simplicity, security, and firmware agility.

Availability

W25N01GVZEIT TR is available at Aetrix Electronics and suitable for industrial automation, automotive infotainment, and medical diagnostics requiring stable component supply, long-lifecycle assurance, and guaranteed traceability.

Supply support for W25N01GVZEIT 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 SPI NOR/NAND, PSRAM, 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 systems - bridging the gap between NOR's ease-of-use and NAND's storage scalability, with integrated ECC and BBM to simplify system-level NAND management.

FAQ

What is the default read mode for W25N01GVZEIT TR at power-up?

The W25N01GVZEIT TR powers up in Continuous Read Mode (BUF = 0), meaning it executes sequential reads across page boundaries without requiring repeated Page Data Read commands. This behavior is defined in the datasheet revision L and distinguishes it from the W25N01GVZEIG TR variant, which defaults to Buffer Read Mode (BUF = 1). The BUF bit is stored in Configuration Register (Status Register-2) and can be modified via Write Status Register instruction (1Fh).

Does W25N01GVZEIT TR support Quad SPI commands, and what pins are used?

Yes, W25N01GVZEIT TR fully supports Quad SPI commands including Fast Read Quad I/O (EBh/ECh) and Quad Load Program Data (32h/34h). In Quad mode, IO0–IO3 function as bidirectional data lines: DI (IO0), DO (IO1), /WP (IO2), and /HOLD (IO3). Note that /WP and /HOLD lose their control functionality in Quad mode and become dedicated I/O pins - requiring host firmware to manage pin role switching based on selected SPI mode.

How does the on-chip ECC work in W25N01GVZEIT TR, and how is it reported?

The W25N01GVZEIT TR implements a hardware 1-bit ECC engine correcting single-bit errors per 528-byte sector. During read operations, ECC status is reported in Status Register-3 (Cxh) via ECC-1 and ECC-0 bits: 00 = no error, 01 = corrected, 10 = uncorrectable. These bits are cleared automatically on next read or write; they do not require explicit clearing. ECC is always enabled when ECC-E bit = 1 in Configuration Register and cannot be disabled in hardware.

Can W25N01GVZEIT TR be used as a direct replacement for SPI NOR flash in existing designs?

W25N01GVZEIT TR is not a pin-to-pin or functional drop-in replacement for SPI NOR flash due to fundamental differences in command set, erase granularity (128KB blocks vs. 4KB sectors), and lack of execute-in-place (XIP) without host-managed caching. However, it can replace NOR in firmware storage applications where the host MCU implements NAND-aware drivers - especially where >64MB density, lower cost-per-bit, and integrated ECC are priorities over raw random-access speed.

What package type and dimensions does W25N01GVZEIT TR use?

W25N01GVZEIT TR uses the 8-pad WSON (Wafer-Level Small Outline No-Lead) package measuring 8 mm × 6 mm × 0.75 mm (JEDEC MO-252), with package code ZE. It features an exposed thermal pad on the bottom (non-electrical) and complies with RoHS and halogen-free standards. The pinout matches Figure 1a in the datasheet revision L, with /CS, DO, /WP, GND, DI, CLK, /HOLD, and VCC arranged in standard counter-clockwise order.