Winbond Electronics Corporation W25N02KVTCIU

Overview

W25N02KVTCIU from Winbond is a 2G-bit (256MB) SLC QspiNAND Flash memory IC supporting Dual/Quad SPI interfaces, 104MHz clock rate, on-chip 8-bit ECC, and 128KB uniform block erase. It delivers 50MB/s sequential read throughput and targets embedded storage in space-constrained systems requiring code shadowing or XIP execution.

For engineers reviewing the W25N02KVTCIU datasheet, W25N02KVTCIU pinout, W25N02KVTCIU application, or W25N02KVTCIU equivalent, key selection criteria include SPI interface mode support (Standard/Dual/Quad), internal ECC capability, deep power-down current (1µA), 60,000 program/erase cycles, and compatibility with 8-pad WSON or 24-ball TFBGA packages.

Technical Context

The W25N02KVTCIU implements a QspiNAND architecture combining serial interface simplicity with NAND density: its 131,072 × 2,048-byte pages are organized into 2,048 erasable 128KB blocks. It supports two distinct read modes-Buffer Read (BUF=1) and Sequential Read (BUF=0)-each with dedicated instruction sets and timing behavior.

Functional operation relies on three volatile status registers (SR-1 to SR-3) and extended ECC registers (BFD, BFS, BFR, MBF/MFS), enabling configurable write protection (BP[3:0], WP-E, SRP[1:0]), OTP page access (10 × 2KB), and real-time ECC bit-flip monitoring. The /WP and /HOLD pins serve dual roles: dedicated control inputs in Standard/Dual SPI, and I/O pins (IO2/IO3) in Quad SPI mode.

Key Specifications

Pinout & Package

W25N02KVTCIU is available in 8-pad WSON 8×6-mm (package code ZE) and 24-ball TFBGA 8×6-mm (package code TC, 6×4 ball array). Pin functions are identical across packages; /WP and /HOLD operate as control inputs in Standard/Dual SPI but become IO2/IO3 in Quad SPI mode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX35LF2GE4AB and MT29F2G01ABAGDWB, W25N02KVTCIU uniquely combines Quad SPI 416MHz effective bandwidth, on-chip 8-bit ECC with real-time bit-flip reporting, and a dedicated Sequential Read mode-enabling faster deterministic data access without host-side ECC overhead.

Availability

W25N02KVTCIU is available at Aetrix Electronics and suitable for industrial HMI displays, medical diagnostic devices, smart energy meters, automotive infotainment systems, and IoT gateways requiring stable component supply, long-term lifecycle support, and validated NAND flash performance.

Supply support for W25N02KVTCIU 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 QspiNAND product line was designed to bridge the gap between serial flash simplicity and NAND density-delivering high-capacity, low-pin-count non-volatile storage for resource-constrained embedded systems.

FAQ

What interface modes does the W25N02KVTCIU support?

The W25N02KVTCIU supports Standard SPI (using DI/DO), Dual SPI (using IO0/IO1), and Quad SPI (using IO0–IO3) with shared CLK and /CS lines. In Standard/Dual SPI, /WP and /HOLD function as dedicated control inputs; in Quad SPI, they become IO2 and IO3 respectively. All modes support up to 104MHz clock frequency, enabling 208MHz (Dual) or 416MHz (Quad) effective data rates.

Does the W25N02KVTCIU include built-in error correction?

Yes, the W25N02KVTCIU integrates an on-chip 8-bit ECC engine with configurable enable/disable (ECC-E bit). It reports ECC status via SR-3 bits (ECC-1/ECC-0), tracks bit-flip counts using BFD/BFS registers, and provides maximum flip count reporting (MBF/MFS). This eliminates the need for external ECC controllers in most embedded applications.

What is the difference between Buffer Read and Sequential Read modes in the W25N02KVTCIU?

Buffer Read mode (BUF=1) loads one page (2,048 bytes) into the internal buffer per command, requiring repeated address commands for multi-page access. Sequential Read mode (BUF=0) allows continuous reading across the entire memory array with a single command and auto-incrementing address-achieving 50MB/s throughput and reducing host CPU overhead for large data transfers.

How many program/erase cycles does the W25N02KVTCIU guarantee?

The W25N02KVTCIU guarantees 60,000 program/erase cycles per block and 10-year data retention at +85°C. Its SLC NAND architecture and on-chip ECC contribute to this endurance, making it suitable for applications with frequent firmware updates or data logging, such as industrial controllers and medical devices.

What package types are available for the W25N02KVTCIU?

W25N02KVTCIU is offered in two space-saving packages: 8-pad WSON 8×6-mm (package code ZE) and 24-ball TFBGA 8×6-mm with 6×4 ball array (package code TC). Both packages share identical pin functions and electrical characteristics, allowing layout flexibility while maintaining compatibility across form factors.