Winbond Electronics Corporation W25N01GVSFIT TR

Overview

W25N01GVSFIT 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 uniform 128KB erase blocks. It supports 104MHz SPI clocking (208MHz Dual I/O, 416MHz Quad I/O), delivers up to 50MB/s continuous read throughput in Continuous Read Mode, and operates from 2.7V–3.6V across –40°C to +85°C - enabling code shadowing, XIP execution, and firmware storage in space-constrained embedded systems.

For engineers reviewing the W25N01GVSFIT TR datasheet, W25N01GVSFIT TR pinout, W25N01GVSFIT TR application, or W25N01GVSFIT TR equivalent, key selection criteria include its default Buffer Read Mode (BUF=1), on-chip 1-bit ECC, hardware/software write protection via /WP and /HOLD, OTP page support, and compatibility with JEDEC-standard SPI command sets including Fast Read Quad I/O and 4-byte addressing.

Technical Context

The W25N01GVSFIT TR implements a true NAND architecture with internal 2,048-byte page buffer, supporting both Buffer Read (default at power-up) and Continuous Read modes - the latter eliminates inter-command page address reissuance for sequential access. Its command set includes standard, dual, and quad SPI instructions (e.g., 03h, 3Bh, 6Bh, EBh), with full 4-byte address support for >16MB addressing.

It integrates volatile and OTP-configurable registers: Protection Register (SR-1) with BP[3:0], WP-E, and SRP[1:0]; Configuration Register (SR-2) with ECC-E, BUF, and OTP-L bits; and Status Register-3 for real-time ECC and busy monitoring. Bad block management is handled via on-die LUT accessible through A5h instruction.

Key Specifications

Pinout & Package

W25N01GVSFIT TR is supplied 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 compact embedded designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF1GE4AB, W25N01GVSFIT TR delivers superior sequential access efficiency and integrated ECC/BMM, while MT29F1G01ABAGDWB offers higher raw bandwidth but mandates non-SPI infrastructure - making W25N01GVSFIT TR the optimal choice for SPI-limited, space-constrained, and firmware-integrity-sensitive designs.

Availability

W25N01GVSFIT TR is available at Aetrix Electronics and suitable for industrial HMI displays, medical diagnostic firmware storage, and smart energy meter boot memory requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage.

Supply support for W25N01GVSFIT 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 semiconductor company specializing in specialty memory solutions, including SPI NOR/NAND flash, mobile DRAM, and code storage ICs for embedded and industrial markets.

The W25N SpiFlash family was designed specifically to bring NAND density and cost-efficiency to SPI-based microcontroller platforms - enabling direct code execution, high-fidelity data logging, and secure firmware updates without parallel bus overhead.

FAQ

What is the default read mode for W25N01GVSFIT TR at power-up?

The W25N01GVSFIT TR powers up in Buffer Read Mode (BUF=1), meaning the Read Data (03h) instruction loads one page into the internal 2,048-byte buffer before serial output begins. This differs from Continuous Read Mode (BUF=0), which streams directly from the array without intermediate buffering. The BUF bit is configurable via Write Status Register (1Fh) and persists until next power cycle or explicit register update.

Does W25N01GVSFIT TR support 4-byte addressing, and which instructions use it?

Yes, W25N01GVSFIT TR fully supports 4-byte addressing across all major read and fast-read variants: Fast Read with 4-Byte Address (0Ch), Fast Read Dual Output with 4-Byte Address (3Ch), Fast Read Quad Output with 4-Byte Address (6Ch), Fast Read Dual I/O with 4-Byte Address (BCh), and Fast Read Quad I/O with 4-Byte Address (ECh). These instructions are essential for accessing memory beyond the 16 MB boundary and are enabled by setting the 4-byte address mode bit in the Configuration Register.

How does hardware write protection work on W25N01GVSFIT TR?

Hardware write protection on W25N01GVSFIT TR is activated when the WP-E bit in the Protection Register (SR-1) is set to 1. In this state, the /WP pin becomes a dedicated active-low input: tying /WP to GND disables all program, erase, and status register write operations - rendering the entire device (including OTP and parameter pages) read-only. Quad SPI read commands are also disabled. This provides immutable firmware protection independent of software state.

What is the role of the Bad Block Management (BBM) Look-Up Table in W25N01GVSFIT TR?

The BBM Look-Up Table (LUT) in W25N01GVSFIT TR is a dedicated on-die table storing physical addresses of factory-invalid and field-detected bad blocks. It is accessed via the Read BBM LUT (A5h) instruction and updated automatically during program/erase operations. This eliminates the need for host-side bad block scanning at boot, accelerates initialization, and ensures deterministic first-access reliability - especially critical in safety- or time-critical applications like medical diagnostics.

Can W25N01GVSFIT TR be used for Execute-in-Place (XIP) applications?

Yes, W25N01GVSFIT TR supports XIP via Dual and Quad SPI interfaces using Fast Read Dual I/O (BBh) and Fast Read Quad I/O (EBh) instructions. With 104MHz clocking, Quad I/O achieves up to 416MHz effective throughput, enabling low-latency instruction fetch directly from flash. Continuous Read Mode further enhances XIP efficiency by allowing uninterrupted streaming across page boundaries without reissuing read commands - ideal for ARM Cortex-M and RISC-V MCU bootloaders.