Winbond Electronics Corporation W29N02KVSIAF

Overview

W29N02KVSIAF from Winbond is a 2G-bit (256MB) SLC NAND Flash memory operating at 2.7V–3.6V, organized into 2,048 blocks of 64 pages each (2,176 bytes/page), supporting x8 multiplexed I/O interface with CLE/ALE control logic. It delivers 25ns sequential read access, 250μs typical page program time, and 2ms block erase time for embedded storage in space-constrained systems requiring reliable code shadowing or media data retention.

For engineers reviewing the W29N02KVSIAF datasheet, W29N02KVSIAF pinout, W29N02KVSIAF application, or W29N02KVSIAF equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), ONFI-compatible command set (including two-plane and copy-back operations), 60,000 P/E cycle endurance with 4-bit/544-byte ECC, and TSOP1-48 package compatibility with standard NAND controllers.

Technical Context

The W29N02KVSIAF implements a standard NAND architecture with dual-plane operation enabling concurrent read/write/erase across even- and odd-numbered block planes. Its command protocol relies on CLE and ALE signals to distinguish command, address, and data phases on the shared 8-bit I/O bus.

It supports enhanced status reporting (78h), unique ID read (EDh), parameter page access (ECh), and OTP area programming. Internal logic includes high-voltage generation for program/erase, error management support via spare area (2176-byte page includes main + spare), and open-drain RY/#BY signaling for asynchronous operation monitoring.

Key Specifications

Pinout & Package

W29N02KVSIAF is packaged in 48-pin TSOP1 (12mm × 20mm, package code S), with all Vcc and Vss pins requiring connection to power/ground per datasheet requirement. Pin functions are validated per Figure 3-1 and Table 3-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MT29F2G08ABAEAH4 and TC58NVG2S3HTAI0, W29N02KVSIAF offers faster block erase (2ms), higher endurance (60k vs 50k cycles), and copy-back support-advantageous for FTL implementations requiring low-latency internal data movement without host intervention.

Availability

W29N02KVSIAF is available at Aetrix Electronics and suitable for embedded code storage, industrial data logging, medical imaging buffers, and smart meter firmware requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for W29N02KVSIAF 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 mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

The W29N02KVSIAF belongs to Winbond's industrial-grade SLC NAND Flash product line, designed specifically for embedded systems demanding high reliability, long data retention, and deterministic timing in harsh thermal environments.

FAQ

What is the operating voltage range for W29N02KVSIAF?

W29N02KVSIAF operates from 2.7V to 3.6V, making it compatible with standard 3.3V system power rails. This range ensures stable functionality across varying input conditions, including brown-out scenarios common in industrial power supplies. The device maintains full specification compliance-including 25ns read timing and 250μs program time-across the entire voltage window. W29N02KVSIAF does not require separate VccQ or I/O voltage rails.

Does W29N02KVSIAF support ONFI standards?

Yes, W29N02KVSIAF supports ONFI-compatible command protocols and timing, including standard commands (00h, 30h, 80h, 10h, 60h, D0h) and extended features like two-plane and copy-back operations. While not certified to a specific ONFI revision number in public documentation, its pinout, timing parameters (e.g., tADL, tCLH), and command behavior align with ONFI 1.0/2.0 interoperability requirements. W29N02KVSIAF is widely adopted with ONFI-aware controllers in industrial designs.

What package type does W29N02KVSIAF use?

W29N02KVSIAF uses a 48-pin TSOP1 package (12mm × 20mm, package code S), as confirmed by datasheet Figure 3-1 and ordering information. This surface-mount package features gull-wing leads compatible with standard reflow profiles and automated assembly. Unlike VFBGA variants (D/B codes), the 'S' suffix in W29N02KVSIAF explicitly denotes TSOP1 packaging, enabling direct PCB compatibility with legacy NAND footprints.

How many program/erase cycles does W29N02KVSIAF guarantee?

W29N02KVSIAF guarantees 60,000 program/erase cycles when used with 4-bit/544-byte ECC correction, as specified in the Features section and Electrical Characteristics table. This endurance rating assumes proper wear-leveling firmware and adherence to recommended voltage/timing margins. The 60,000-cycle figure reflects real-world usage under industrial thermal stress (−40°C to +85°C), not accelerated lab testing. W29N02KVSIAF's SLC architecture inherently delivers higher endurance than MLC or TLC alternatives.

What is the purpose of the RY/#BY pin on W29N02KVSIAF?

The RY/#BY pin on W29N02KVSIAF is an open-drain output that signals operational status: low indicates the device is busy executing a read, program, or erase command; high confirms completion and readiness for the next command. Host systems must poll this pin-or configure an interrupt-to avoid issuing overlapping commands. Its open-drain design allows wired-OR connection with multiple NAND devices. W29N02KVSIAF requires external pull-up for proper logic-level interpretation.