Winbond Electronics Corporation W25Q256JVBIQ TR

Overview

W25Q256JVBIQ TR from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting Standard/Dual/Quad SPI interfaces, 133MHz clock rate, 4KB uniform sector erase, and hardware write protection via /WP and /HOLD pins. It operates from 2.7V to 3.6V, consumes <1µA in power-down mode, and is used for code execution-in-place (XIP), firmware storage, and boot code retention in embedded microcontrollers.

For engineers reviewing the W25Q256JVBIQ TR datasheet, W25Q256JVBIQ TR pinout, W25Q256JVBIQ TR application, or W25Q256JVBIQ TR equivalent, key selection criteria include Quad SPI enable (QE bit), 4-byte address mode support, JEDEC ID/SFDP register compliance, and package-specific /RESET availability in SOIC/TFBGA variants.

Technical Context

The W25Q256JVBIQ TR implements a flexible SPI command set with three address modes (3-byte default, extended register, and 4-byte), enabling full 256M-bit addressing. Its status register architecture includes volatile/non-volatile BP bits, Quad Enable (QE), and security lock bits (LB1–LB3) for OTP-protected sectors.

It supports concurrent erase/program suspend-resume operations, dual/quad I/O data transfers at up to 532MHz equivalent bandwidth, and hardware reset (/RESET) only in SOIC-16 and TFBGA packages - absent in the WSON-8 variant of W25Q256JVBIQ TR.

Key Specifications

Pinout & Package

W25Q256JVBIQ TR uses the 8-pad WSON 8×6-mm package (Package Code E), with no dedicated /RESET pin. All signals are shared across SPI modes: /CS selects device, CLK clocks transfers, DI/DO serve as IO0/IO1 in Standard/Dual mode, and /WP and /HOLD become IO2/IO3 when Quad Enable (QE) is set.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash applications.

Compared with MX25L25645GMI-10G and S25FL256SAGMFI000, the W25Q256JVBIQ TR offers broader standardization (JEDEC ID, SFDP), simpler Quad SPI enable flow (single QE bit), and lower power-down current (<1µA vs 5µA), making it optimal for cost-sensitive, standards-compliant embedded designs where advanced ECC or octal mode is unnecessary.

Availability

W25Q256JVBIQ TR is available at Aetrix Electronics and suitable for industrial control systems, automotive infotainment modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25Q256JVBIQ TR 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 manufacturer specializing in specialty memory solutions, including SPI NOR/NAND flash and SRAM products for embedded and industrial markets.

The W25Q series targets high-performance, space-constrained applications demanding fast XIP execution, robust security features, and multi-vendor interoperability through JEDEC-standardized interfaces.

FAQ

What package type does W25Q256JVBIQ TR use, and does it include a /RESET pin?

W25Q256JVBIQ TR uses the 8-pad WSON 8×6-mm package (Package Code E) and does not include a dedicated /RESET pin. Hardware reset functionality is only available in SOIC-16 and TFBGA variants of the W25Q256JV family - not in W25Q256JVBIQ TR. System-level reset must be handled via software commands (66h + 99h) or external circuitry.

How is Quad SPI enabled on W25Q256JVBIQ TR, and what happens to the /WP and /HOLD pins?

Quad SPI is enabled on W25Q256JVBIQ TR by setting the Quad Enable (QE) bit in Status Register-2 (SR2). When QE = 1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3, allowing full 4-line bidirectional data transfer. This reconfiguration is non-volatile if written to the non-volatile portion of SR2, persisting across power cycles.

Does W25Q256JVBIQ TR support 4-byte addressing, and how is it activated?

Yes, W25Q256JVBIQ TR supports 4-byte addressing to access its full 256M-bit capacity. It is activated using the Enter 4-Byte Address Mode instruction (B7h). Once enabled, all subsequent read/write/erase commands use 4-byte addresses. The setting is volatile unless the ADP bit in Status Register-2 is programmed to retain 4-byte mode after power-up.

What security features are implemented in W25Q256JVBIQ TR beyond basic write protection?

W25Q256JVBIQ TR includes multiple security layers: three 256-byte OTP-lockable security registers (LB1–LB3), 64-bit factory-unique ID, JEDEC-standard SFDP register for authenticated parameter discovery, and individual sector/block lock/unlock instructions (36h/39h). These features enable secure key storage, firmware binding, and tamper-resistant calibration data retention.

Can W25Q256JVBIQ TR be used for Execute-in-Place (XIP) applications, and what performance can be expected?

Yes, W25Q256JVBIQ TR supports true XIP operation via Quad SPI Fast Read commands (6Bh/6Ch), delivering up to 66 MB/s continuous read throughput at 133MHz clock. Its uniform 4KB sector architecture and low-latency random access make it suitable for direct code execution in microcontrollers with SPI memory-mapped peripherals, eliminating need for RAM shadowing in many cases.