Winbond Electronics Corporation W25N01GVTCIG

Overview

W25N01GVTCIG from Winbond is a 1G-bit 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 supports 104MHz SPI clocking (208MHz dual, 416MHz quad), 50MB/s continuous read transfer, on-chip 1-bit ECC, and hardware/software write protection. It is used in embedded boot code storage, firmware update partitions, and industrial HMI data logging.

For engineers reviewing the W25N01GVTCIG datasheet, W25N01GVTCIG pinout, W25N01GVTCIG application, or W25N01GVTCIG equivalent, key selection considerations include BUF-mode default (Buffer Read), TFBGA-24 (6×4) package compatibility, 2.7–3.6V single-supply operation, JEDEC ID support, and OTP page programmability for secure configuration storage.

Technical Context

The W25N01GVTCIG implements a serial NAND architecture with internal 2,048-byte buffer and configurable read mode (BUF=1 default at power-up). It executes standard, dual, and quad SPI instructions-including Fast Read Quad I/O (6Bh/6Ch) and Buffer Read (03h) or Continuous Read (03h with BUF=0)-with full command set compatibility to legacy SPI flash.

Its protection system combines volatile status register bits (BP3–BP0, WP-E, SRP1/SRP0), OTP-lockable registers, and dedicated /WP and /HOLD pins. ECC is implemented on-chip with status reporting via ECC-1/ECC-0 bits in Status Register-3, and bad block management uses a user-accessible LUT via A5h instruction.

Key Specifications

Pinout & Package

W25N01GVTCIG is packaged in a 24-ball TFBGA 8×6 mm with 6×4 ball array (package code TC), pin-compatible with other W25N01GV variants in same footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF1GE4AB, W25N01GVTCIG offers OTP pages and hardware write protection for secure boot; versus MT29F1G01ABAGDWB, it eliminates NAND controller dependency and reduces PCB layer count via SPI simplicity-critical for space-constrained modules.

Availability

W25N01GVTCIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot image retention, and smart energy meter data logging requiring stable component supply across long production lifecycles.

Supply support for W25N01GVTCIG 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 DRAM, mobile DRAM, Code Storage Flash, and TrustME® secure flash solutions.

The W25N SpiFlash family targets embedded systems needing high-density, SPI-compatible NAND with integrated ECC and simplified management-bridging the gap between NOR flash speed and NAND flash capacity.

FAQ

What is the default read mode for W25N01GVTCIG at power-up?

W25N01GVTCIG powers up in Buffer Read mode (BUF=1) as indicated by the "G" suffix in its part number. This means the device expects Page Data Read (13h) instructions before Read Data (03h) to load page contents into the internal 2,048-byte buffer. The BUF bit is located in Status Register-2 (address Bxh, bit 5) and can be modified via Write Status Register (1Fh) instruction.

Does W25N01GVTCIG support Quad SPI operation with hardware write protection enabled?

No-when WP-E=1 (Hardware Protection mode), W25N01GVTCIG disables all Quad SPI read operations. The /WP pin becomes a dedicated active-low write lock for the entire device, including registers and OTP pages. Quad SPI functionality is only available in Software Protection mode (WP-E=0), where /WP serves as IO2. This restriction is explicitly defined in section 4.3 of the datasheet.

How many OTP pages does W25N01GVTCIG provide, and what is their purpose?

W25N01GVTCIG provides ten 2,048-byte OTP (One-Time Programmable) pages. These pages are used to store immutable data such as cryptographic keys, device-specific calibration coefficients, or firmware signature hashes. Once programmed, OTP pages cannot be erased or rewritten-making them suitable for secure provisioning and anti-cloning applications in regulated industries like medical and automotive.

What package type does W25N01GVTCIG use, and how is it identified in the part number?

W25N01GVTCIG uses a 24-ball TFBGA 8×6 mm package with a 6×4 ball array (package code TC). The "TC" in the suffix "TCIG" directly identifies this variant-"T" denotes TFBGA, "C" specifies the 6×4 configuration, and "IG" indicates industrial temperature grade (–40°C to +85°C) and lead-free RoHS compliance.

Can W25N01GVTCIG be used for Execute-in-Place (XIP) applications?

Yes-W25N01GVTCIG supports XIP via Dual/Quad SPI interfaces with Fast Read Dual/Quad I/O instructions (e.g., BBh, EBh), achieving up to 416 MHz effective bandwidth. Its Continuous Read Mode (BUF=0) further enhances XIP performance by enabling seamless sequential access across page boundaries without repeated Page Data Read commands-reducing latency for boot code execution.