Winbond Electronics Corporation W25N01GWTCIG TR

Overview

W25N01GWTCIG 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 Buffer Read Mode (default at power-up), and integrates on-chip 1-bit ECC, hardware/software write protection, and bad block management. It is used for code shadowing, XIP execution, and firmware storage in space-constrained embedded systems.

For engineers reviewing the W25N01GWTCIG TR datasheet, W25N01GWTCIG TR pinout, W25N01GWTCIG TR application, or W25N01GWTCIG TR equivalent, key selection considerations include its default BUF=1 boot mode, WSON 8x6-mm (ZE) package with 8-pad layout, 1.70–1.95V supply range, -40°C to +85°C operation, and support for JEDEC ID, Unique ID/OTP/parameter pages.

Technical Context

The W25N01GWTCIG TR implements a serial SLC NAND architecture with dual operational read modes: Buffer Read (BUF=1, default) and Continuous Read (BUF=0). Its command set includes standard SPI instructions plus Dual/Quad I/O variants (e.g., Fast Read Quad I/O, EBh/ECh), enabling scalable bandwidth up to 416MHz equivalent via 4-bit I/O. The device uses internal 2,048-byte page buffers for full-page programming and supports 128KB uniform block erase.

It features three volatile/OTP-configurable status registers: SR-1 (protection & WP-E control), SR-2 (ECC-E, BUF, ODS, OTP-E), and SR-3 (ECC-1/0, P-FAIL/E-FAIL, BUSY). Write protection is enforced via /WP pin behavior (software/hardware mode selectable), /HOLD pin (active-low pause), and programmable BP[3:0]/SRP[1:0] bits - all validated for use with SPI host controllers in industrial firmware storage applications.

Key Specifications

Pinout & Package

W25N01GWTCIG TR is packaged in an 8-pad WSON 8×6-mm (JEDEC MO-252, package code ZE), surface-mount, lead-free, RoHS-compliant package with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N01GWTCIG TR, W25N01GVTCIG TR shares identical functionality but mandates 3.3V operation, while MT29F1G01ABAGDWB-IT:C requires architectural redesign due to its parallel interface and controller dependency - making W25N01GWTCIG TR the optimal choice for SPI-native, low-voltage embedded firmware storage.

Availability

W25N01GWTCIG TR is available at Aetrix Electronics and suitable for industrial firmware storage, embedded boot code execution, and IoT edge device configuration requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for W25N01GWTCIG 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, SRAM, and audio codecs, serving industrial, automotive, and consumer markets since 1987.

The W25N SpiFlash family was designed to bring NAND density and cost efficiency to SPI-based systems - bridging the gap between traditional serial flash and parallel NAND by integrating ECC, bad block management, and Quad SPI into a pin-compatible serial interface.

FAQ

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

W25N01GWTCIG TR powers up in Buffer Read Mode (BUF=1), meaning the device expects "Read Data" (03h) or "Fast Read" (0Bh) commands to access sequential data without issuing intermediate "Page Data Read" (13h) instructions. This mode is optimized for code shadowing and reduces host CPU overhead during bulk reads. The BUF bit resides in Status Register-2 and can be changed via Write Status Register (1Fh) instruction.

Does W25N01GWTCIG TR support Quad SPI operation, and what pins are used?

Yes, W25N01GWTCIG TR supports Quad SPI operation using IO0 (DI), IO1 (DO), IO2 (/WP), and IO3 (/HOLD) - all mapped to pins 5, 2, 3, and 7 respectively in the WSON 8x6-mm package. In Quad mode, /WP and /HOLD lose their dedicated protection functions and become general-purpose I/Os. Quad instructions like Fast Read Quad I/O (EBh) achieve up to 416MHz equivalent bandwidth at 104MHz CLK.

How does the on-chip ECC work in W25N01GWTCIG TR, and how is it monitored?

W25N01GWTCIG TR implements hardware 1-bit ECC per 528-byte sector, correcting single-bit errors transparently. ECC status is reported in Status Register-3 (Cxh) via ECC-1/ECC-0 bits: 00 = no error, 01 = single-bit corrected, 10 = uncorrectable multi-bit error. The host reads these bits after each page read to log correction events or trigger recovery - no external ECC logic is required.

Can W25N01GWTCIG TR be used in place of standard SPI NOR flash, and what are the key differences?

W25N01GWTCIG TR is not a direct replacement for SPI NOR flash due to fundamental architecture differences: it uses SLC NAND with block erase (128KB), requires bad block management, and lacks true random write capability. While it supports identical SPI commands for read operations, it cannot execute arbitrary code in-place (XIP) without careful page-aligned access and ECC-aware drivers - unlike NOR. It excels in high-density, cost-sensitive firmware storage where endurance and retention outweigh random-write needs.

What package type and pin count does W25N01GWTCIG TR use?

W25N01GWTCIG TR uses the 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE), with exposed thermal pad. It has 8 electrical terminals: /CS, DO(IO1), /WP(IO2), GND, DI(IO0), CLK, /HOLD(IO3), and VCC. This compact footprint supports high-density PCB layouts and is compatible with standard reflow processes - distinct from the 16-pin SOIC or 24-ball TFBGA variants in the same family.