Winbond Electronics Corporation W29N04KZSIBG

Overview

W29N04KZSIBG from Winbond is a 4G-bit (512MB) Single-Level Cell (SLC) NAND Flash memory operating at 1.7–1.95V, organized into 2,048 blocks of 64 pages each (4,352 bytes/page), with 4,096-byte main data + 256-byte spare area per page. It supports x8/x16 bus width, ONFI-compatible command set, and is used in embedded storage for code shadowing, firmware logging, and media buffering in space-constrained industrial systems.

For engineers reviewing the W29N04KZSIBG datasheet, W29N04KZSIBG pinout, W29N04KZSIBG application, or W29N04KZSIBG equivalent, key selection criteria include its 1.8V operation, 25μs random read latency, 250μs typical page program time, 2ms block erase time, 60,000 P/E cycles, and support for Copy Back and Read Parameter Page commands - all critical for reliable boot code storage and field-upgradable firmware.

Technical Context

This SLC NAND device implements a multiplexed 8/16-bit I/O bus with five dedicated control signals (CLE, ALE, #CE, #WE, #RE) to manage command, address, and data latching via edge-triggered protocols. Its internal logic control block coordinates high-voltage generation, row/column decoding, and status register access independent of host timing.

It supports standard NAND operations including PAGE READ (00h-30h), PAGE PROGRAM (80h-10h), BLOCK ERASE (60h-D0h), RESET (FFh), and extended features like GET/SET FEATURES (EEh/EFh) and COPY BACK. The RY/#BY open-drain output provides asynchronous busy-state indication during all non-standby operations.

Key Specifications

Pinout & Package

W29N04KZSIBG is packaged in a 48-pin TSOP1 (12 mm × 20 mm, package code S), with all Vcc and Vss pins requiring connection to power/ground per design guidelines. DNU and N.C. pins must remain unconnected.

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 TC58CVG2S3HRAIJ, W29N04KZSIBG uniquely balances 1.8V operation, TSOP1 availability, hardware write protection, and ONFI feature support - making it optimal for cost-sensitive, space-constrained industrial controllers needing field-upgradable firmware with minimal BOM changes.

Availability

W29N04KZSIBG is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device boot memory, automotive telematics logging, and network edge router configuration requiring stable component supply across extended temperature ranges.

Supply support for W29N04KZSIBG 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.

W29N04KZSIBG belongs to Winbond's W29NxxKW series of SLC NAND Flash memories designed specifically for embedded systems requiring high reliability, low voltage operation, and ONFI-standard interoperability in space- and power-constrained environments.

FAQ

What is the operating voltage range for W29N04KZSIBG?

W29N04KZSIBG operates from 1.7 V to 1.95 V, with typical performance characterized at 1.8 V. This narrow 1.8V-centric range ensures compatibility with modern low-power SoCs and reduces system-level voltage regulation complexity. All DC and AC specifications - including 13 mA active current and 10 μA standby - are guaranteed across this full range, making W29N04KZSIBG suitable for battery-operated and thermally sensitive applications without derating.

Does W29N04KZSIBG support both x8 and x16 bus widths?

Yes, W29N04KZSIBG supports configurable x8 and x16 data bus widths, determined by package variant and initialization sequence. The 48-pin TSOP1 (S-code) and 63-ball VFBGA (B-code) packages each support both modes, with distinct pin assignments documented in Figures 3-1 through 3-3. Bus width selection occurs during power-up and affects addressing format (e.g., column address bits), but does not require hardware modification - only controller configuration alignment.

What is the purpose of the spare area in each 4,352-byte page of W29N04KZSIBG?

Each page of W29N04KZSIBG contains a 256-byte spare area adjacent to the 4,096-byte main data region. This spare area is reserved for error correction codes (ECC), logical-to-physical block mapping metadata, wear-leveling counters, and bad-block flags - all essential for NAND management firmware. Winbond specifies 60,000 P/E cycles assuming 8-bit/544-byte ECC applied across this full 4,352-byte structure, meaning the spare area is integral to achieving rated endurance and data retention.

How does the #WP pin function on W29N04KZSIBG?

The #WP (Write Protect) pin on W29N04KZSIBG is an active-low hardware lock that disables all program and erase operations when asserted, regardless of command sequence or controller state. When #WP is pulled low, the device ignores PAGE PROGRAM, BLOCK ERASE, and SET FEATURES commands - providing fail-safe protection against corruption during power brownouts, reset glitches, or firmware bugs. It does not affect read operations or status register access, enabling safe diagnostics while write paths are locked.

Is W29N04KZSIBG compatible with ONFI standards?

Yes, W29N04KZSIBG implements ONFI 2.3-compliant command set and timing, including mandatory commands (READ ID, READ STATUS, RESET) and optional features like READ PARAMETER PAGE (ECh) and GET/SET FEATURES (EEh/EFh). Its pinout, electrical characteristics, and protocol behavior align with ONFI specifications - enabling interoperability with standard NAND controllers and simplifying qualification in multi-vendor platforms. However, it does not support ONFI 3.x features like NV-DDR2 interface.