Winbond Electronics Corporation W25N01GWTCIG

Overview

W25N01GWTCIG 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 (416MHz equivalent Quad I/O), delivers 40MB/s continuous read throughput, and features on-chip 1-bit ECC, hardware/software write protection, and dual boot-mode configuration (BUF=1 default). It serves as non-volatile storage for code shadowing, XIP execution, and firmware/data logging in space-constrained embedded systems.

For engineers reviewing the W25N01GWTCIG datasheet, W25N01GWTCIG pinout, W25N01GWTCIG application, or W25N01GWTCIG equivalent, key selection criteria include its 8-pad WSON 8×6-mm (ZE) package, 1.70–1.95V supply range, -40°C to +85°C industrial temperature rating, Continuous Read vs Buffer Read mode behavior, and Quad SPI timing compliance per JEDEC JESD22-A117.

Technical Context

The W25N01GWTCIG implements a page-based SLC NAND architecture with internal 2,048-byte data buffer, supporting both Buffer Read (default power-up mode) and Continuous Read modes via configurable BUF bit in Status Register-2. Its command set includes standard SPI opcodes plus extended Dual/Quad I/O instructions (e.g., Fast Read Quad I/O, 6Bh/6Ch), all operating under a unified 1.8V core supply.

It integrates volatile and OTP-configurable registers: Protection Register (SR-1) with BP[3:0], WP-E, SRP[1:0]; Configuration Register (SR-2) with ECC-E, BUF, ODS[1:0]; and Status Register-3 reporting real-time ECC status (ECC-1/ECC-0), P-FAIL/E-FAIL flags, and BUSY state. Bad block management uses a dedicated Look-Up Table accessible via A5h instruction.

Key Specifications

Pinout & Package

W25N01GWTCIG is packaged in an 8-pad WSON 8×6-mm (JEDEC MO-252, package code ZE), with exposed thermal pad. Pin assignments are fully defined per Figure 1a of the datasheet and validated for this specific variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF1GE4AB, W25N01GWTCIG reduces firmware development effort via integrated BBM and Continuous Read; versus MT29F1G01ABAGDWB, it eliminates NAND controller dependency and cuts BOM count by replacing 48-pin TSOP + controller with single 8-pin WSON device.

Availability

W25N01GWTCIG is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical device boot image retention, and smart meter data logging requiring stable component supply, long-term lifecycle support, and guaranteed 1.8V serial NAND compatibility.

Supply support for W25N01GWTCIG 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, RAM, and TrustME secure memory products.

W25N01GWTCIG belongs to the W25N SpiFlash family - designed specifically to bring NAND density and cost-efficiency to SPI-based embedded systems without sacrificing reliability, ease of use, or industrial temperature support.

FAQ

What is the default read mode for W25N01GWTCIG at power-up?

W25N01GWTCIG powers up in Buffer Read mode (BUF=1), as confirmed by the "W25N01GWxxIG" suffix in the datasheet title and Section 2 Features note. This means the device expects Page Data Read (13h) commands before each page access unless the BUF bit in Status Register-2 is explicitly cleared to enable Continuous Read mode (BUF=0).

Does W25N01GWTCIG support Quad SPI commands like Fast Read Quad I/O?

Yes, W25N01GWTCIG fully supports Quad SPI operation using IO0–IO3 pins, including Fast Read Quad I/O (6Bh/6Ch) and Quad Load Program Data (32h/34h). These commands achieve up to 416MHz effective throughput (104MHz × 4) and are defined in Instruction Set Table 2 of the datasheet.

How does hardware write protection work on W25N01GWTCIG?

Hardware write protection is activated by setting the WP-E bit (bit 7 of Status Register-1) to 1. When WP-E=1 and /WP is tied to GND, all program, erase, and write-status operations are disabled - the entire device (memory array, registers, OTP pages) becomes read-only, including Quad SPI read commands.

What package type does W25N01GWTCIG use, and is it RoHS compliant?

W25N01GWTCIG uses the 8-pad WSON 8×6-mm package (package code ZE), as specified in Section 11.1 and Figure 1a of the datasheet. It is RoHS-compliant and halogen-free, meeting JEDEC standards for lead-free assembly and reflow profiles.

Can W25N01GWTCIG be used for code execution directly from flash (XIP)?

Yes, W25N01GWTCIG supports execute-in-place (XIP) via Dual/Quad SPI interfaces. Its 104MHz clock support, Fast Read Dual/Quad I/O instructions, and Continuous Read mode collectively enable efficient sequential instruction fetch - verified in application notes for ARM Cortex-M and RISC-V SoCs with SPI memory-mapped controllers.