Winbond Electronics Corporation W25N02KVTBIR

Overview

W25N02KVTBIR from Winbond is a 2G-bit (256MB) SLC QspiNAND Flash memory with Dual/Quad SPI interface, 128KB uniform block erase, on-chip 8-bit ECC, and support for sequential read mode. It operates from 2.7V to 3.6V, delivers up to 50MB/s sequential data transfer, and targets embedded code storage and XIP applications in space-constrained industrial systems.

For engineers reviewing the W25N02KVTBIR datasheet, W25N02KVTBIR pinout, W25N02KVTBIR application, or W25N02KVTBIR equivalent, key selection considerations include its TFBGA-24 (8×6 mm, 5×5 ball array) package, dual/quad SPI timing compatibility up to 104MHz, hardware/software write protection, internal ECC status reporting, and OTP page programmability.

Technical Context

The W25N02KVTBIR implements a QspiNAND architecture combining SPI command simplicity with NAND density efficiency. Its memory array comprises 131,072 pages of 2,048 bytes each, organized into 2,048 erasable 128KB blocks. It supports standard, dual, and quad I/O SPI protocols using shared IO pins (IO0–IO3), with /WP and /HOLD repurposed as IO2 and IO3 in Quad mode.

Functional operation relies on three volatile status registers (SR-1/SR-2/SR-3) and extended ECC registers for bit-flip monitoring. Configuration includes buffer read (BUF=1) and sequential read (BUF=0) modes, ECC enable (ECC-E), OTP access control (OTP-E), and output driver strength (ODS-1/ODS-0), all programmable via SPI instructions.

Key Specifications

Pinout & Package

W25N02KVTBIR uses a 24-ball TFBGA package (8×6 mm, 5×5 ball array, package code TB), optimized for high-density PCB layouts and thermal performance in industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF2GE4AB and MT29F2G01ABAGDWB, W25N02KVTBIR uniquely integrates SPI interface, on-chip ECC, and sequential read mode in a 24-ball TFBGA package-reducing BOM count, simplifying layout, and eliminating external ECC logic while maintaining industrial temperature and endurance specs.

Availability

W25N02KVTBIR is available at Aetrix Electronics and suitable for industrial HMI firmware storage, edge gateway code shadowing, and smart sensor node logging requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for W25N02KVTBIR 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, RAM, and voice ICs, serving industrial, automotive, and consumer markets since 1987.

The W25N QspiNAND product line was designed to replace parallel NAND in resource-constrained embedded systems by delivering NAND density with SPI simplicity, integrated ECC, and industrial-grade reliability-exemplified by W25N02KVTBIR.

FAQ

What is the package type and pin count of W25N02KVTBIR?

W25N02KVTBIR uses a 24-ball TFBGA package measuring 8 mm × 6 mm with a 5×5 ball array (package code TB). It has eight functional terminals: /CS, CLK, DI (IO0), DO (IO1), /WP (IO2), /HOLD (IO3), VCC, and GND. The remaining balls are NC or ground/power pads per layout requirements.

Does W25N02KVTBIR support both buffer read and sequential read modes?

Yes, W25N02KVTBIR supports both modes via the BUF bit (bit 7) in Status Register-2. When BUF=1 (default), it operates in Buffer Read Mode with standard page-aligned reads. When BUF=0, it enters Sequential Read Mode, allowing continuous access across page boundaries with a single Read instruction-ideal for streaming firmware or media data.

How does the on-chip ECC function in W25N02KVTBIR?

W25N02KVTBIR includes an integrated 8-bit ECC engine that automatically corrects up to 8 bit errors per 512-byte sector during read operations. ECC status is reported via ECC-1/ECC-0 bits in Status Register-3, and extended registers (BFD, BFS, BFR, MBF) provide detailed bit-flip monitoring-enabling predictive failure analysis without host-side ECC logic.

Can W25N02KVTBIR be used for execute-in-place (XIP) applications?

Yes, W25N02KVTBIR supports XIP via Dual/Quad SPI interfaces, allowing microcontrollers to execute code directly from flash without copying to RAM. Its 104 MHz clock support and fast read instructions (e.g., Fast Read Quad I/O) deliver sufficient bandwidth for real-time code execution in industrial controllers and edge devices.

What write protection mechanisms does W25N02KVTBIR offer?

W25N02KVTBIR provides layered write protection: software-based via Block Protect (BP3–BP0) and Status Register Protect (SRP1/SRP0) bits, and hardware-based via the /WP pin when WP-E=1. In hardware mode, tying /WP to GND disables all write/erase operations-including registers and OTP pages-making the entire device read-only.