Winbond Electronics Corporation W29N04KZBIBF

Overview

W29N04KZBIBF from Winbond is a 4G-bit (512MB) single-level cell (SLC) NAND Flash memory operating at 1.8V, organized into 4,096 erasable blocks of 139,264 bytes each, with 64 pages per block and 2,176-byte pages (2,048-byte main + 128-byte spare). It supports x8/x16 bus widths, ONFI-compatible command set, and targets embedded storage in space-constrained systems requiring reliable code shadowing and media data retention.

For engineers reviewing the W29N04KZBIBF datasheet, W29N04KZBIBF pinout, W29N04KZBIBF application, or W29N04KZBIBF equivalent, key selection criteria include its 1.7–1.95V supply range, 25μs random read latency, 250μs typical page program time, 2ms block erase time, and support for two-plane operations and copy-back commands in industrial temperature (-40°C to 85°C) operation.

Technical Context

The W29N04KZBIBF implements a standard NAND interface with multiplexed I/O[0–7] for command, address, and data transfer, controlled by five dedicated signals: CLE, ALE, #CE, #RE, and #WE. Its internal architecture includes a high-voltage generator, row/column decoders, and a 2,176-byte data register enabling page-level access and status monitoring via open-drain RY/#BY.

It supports ONFI 2.3-compliant timing and command protocols including enhanced status reads (78h), parameter page access (ECh), unique ID read (EDh), and feature configuration (EEh/EFh). Two-plane operation allows concurrent read/program/erase across even- and odd-numbered block planes, improving effective throughput without increasing clock frequency.

Key Specifications

Pinout & Package

W29N04KZBIBF is packaged in a 63-ball VFBGA (package code B), footprint-optimized for high-density PCB layouts. Ball pitch is 0.5mm; package dimensions are 9mm × 11mm × 1.0mm (max).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MT29F4G08ABAEAH4-IT:E and TC58CVG2S0HRAIJ, W29N04KZBIBF delivers superior random read speed (25μs), integrated two-plane concurrency, and factory-programmed unique ID-making it optimal for secure, high-reliability industrial and medical edge storage where timing determinism and device identity matter.

Availability

W29N04KZBIBF is available at Aetrix Electronics and suitable for industrial HMI storage, medical device firmware, and automotive telematics boot applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature operation.

Supply support for W29N04KZBIBF 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 communications markets since 1987.

The W29N series is Winbond's industrial-grade SLC NAND product line designed for mission-critical embedded storage where reliability, longevity, and standardized ONFI interoperability supersede raw density or cost-per-bit.

FAQ

What is the operating voltage range for W29N04KZBIBF?

W29N04KZBIBF operates from 1.7V to 1.95V, optimized for 1.8V system rails. This narrow range reduces power supply complexity and eliminates need for voltage translators in modern low-power embedded designs. The device maintains full functionality-including read, program, and erase-across this entire window, with DC and AC characteristics fully characterized per datasheet Table 10-2.

Does W29N04KZBIBF support ONFI standards, and which version?

Yes, W29N04KZBIBF is compliant with ONFI 2.3 specifications. It supports standardized command sets (e.g., ECh for parameter page, 78h for enhanced status), timing models, and electrical interfaces defined in ONFI 2.3, ensuring plug-and-play compatibility with ONFI-aware controllers and simplifying firmware portability across platforms.

What is the purpose of the spare area in each 2,176-byte page of W29N04KZBIBF?

The 128-byte spare area in each W29N04KZBIBF page is reserved for error correction code (ECC) metadata, logical-to-physical block mapping, wear-leveling counters, and bad-block flags. It is not user-accessible for general storage and must be managed by the host controller or flash translation layer to maintain data integrity across 60,000 program/erase cycles.

How does the two-plane operation in W29N04KZBIBF improve performance?

Two-plane operation in W29N04KZBIBF allows independent read, program, or erase actions on even- and odd-numbered block planes simultaneously-for example, reading from one plane while programming to the other. This concurrency effectively doubles sustained throughput for streaming applications without increasing clock speed or bus width, reducing effective latency in firmware update and media playback scenarios.

Is W29N04KZBIBF pin-compatible with other Winbond W29N04KW/Z variants?

W29N04KZBIBF shares identical 63-ball VFBGA pinout (package code B) and signal definitions with other W29N04KW/ZxxBF variants, including same ball assignments for #CE, CLE, ALE, #RE, #WE, RY/#BY, #WP, I/O[0–7], Vcc, and Vss. However, temperature grade (Industrial vs. Industrial Plus) and bus width configuration (x8 vs. x16) are masked in the suffix and do not affect pin compatibility.