Winbond Electronics Corporation W25Q128FVBJQ TR

Overview

W25Q128FVBJQ TR from Winbond is a 128M-bit (16MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating from 2.7V to 3.6V with 104MHz max clock rate, 4KB uniform sector architecture, and integrated hardware write protection via /WP and /HOLD pins - used for code storage, XIP boot, firmware updates, and parameter retention in microcontroller-based embedded systems.

For engineers reviewing the W25Q128FVBJQ TR datasheet, W25Q128FVBJQ TR pinout, W25Q128FVBJQ TR application, or W25Q128FVBJQ TR equivalent, key selection considerations include Quad Enable (QE) bit configuration, /HOLD vs /RESET pin mapping across package variants, 4KB sector erase granularity, JEDEC ID and SFDP register support, and compatibility with SPI controller timing margins for Fast Read Quad I/O (EBh) at up to 416MHz equivalent throughput.

Technical Context

The W25Q128FVBJQ TR implements a flexible SPI-compatible command set with volatile/non-volatile status register control (SRP0/SRP1, QE, TB, BP2–BP0), enabling hardware- and software-based memory protection. Its dual-function IO pins (IO0–IO3) reconfigure based on QE bit state: when QE=0, pins serve as DI/DO/WP/HOLD; when QE=1, all four operate as bidirectional data lines for Quad SPI/QPI.

It supports multiple erase granularities (4KB sector, 32KB block, 64KB block, full chip), program suspend/resume, and continuous read mode with wrap lengths of 8/16/32/64 bytes - enabling deterministic latency for execute-in-place (XIP) operation. The device includes three 256-byte security registers with OTP lock bits (LB1–LB3) and a factory-programmed 64-bit unique ID.

Key Specifications

Pinout & Package

W25Q128FVBJQ TR uses an 8-pin WSON 6×5-mm package (Package Code P), with exposed pad for thermal dissipation and no internal heatsink requirement. Pin 1 = /CS, Pin 2 = DO (IO1), Pin 3 = /WP (IO2), Pin 4 = GND, Pin 5 = DI (IO0), Pin 6 = CLK, Pin 7 = /HOLD or /RESET (IO3), Pin 8 = VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L12833FZC-10G and S25FL128SAGMFI001, the W25Q128FVBJQ TR uniquely combines QPI mode, SFDP register, continuous read wrap, and OTP-secured security registers in an 8-pin WSON package - making it optimal for space-constrained XIP designs requiring field-upgradable firmware and cryptographic key storage.

Availability

W25Q128FVBJQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot memory, medical device calibration data archive, and IoT edge node secure configuration store requiring stable component supply across multi-year production cycles.

Supply support for W25Q128FVBJQ 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 NOR/NAND flash, SRAM, and mobile DRAM for industrial, automotive, and consumer applications.

The W25Q series targets embedded systems requiring high-reliability, low-power, and interface-flexible serial flash - designed specifically for code execution, firmware storage, and secure parameter retention in resource-constrained environments.

FAQ

What is the package type and pin count of the W25Q128FVBJQ TR?

The W25Q128FVBJQ TR uses an 8-pin WSON (6×5-mm) package with exposed thermal pad (Package Code P). It has eight physical terminals: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD or /RESET (IO3), and VCC - confirmed in Winbond's datasheet revision M, section 3.2 and 10.4.

Does the W25Q128FVBJQ TR support Quad SPI and QPI modes simultaneously?

No - the W25Q128FVBJQ TR supports either Quad SPI or QPI mode, selected by setting the Quad Enable (QE) bit in Status Register-2. QPI mode requires issuing the Enter QPI Mode (38h) instruction and uses all four IO lines for bidirectional command/data transfer, while Quad SPI remains SPI-compatible with standard opcodes.

How is hardware write protection implemented on the W25Q128FVBJQ TR?

The W25Q128FVBJQ TR implements hardware write protection via the /WP pin (Pin 3), which - when held low - prevents writes to the status register. This works in conjunction with non-volatile block protect bits (BP2–BP0, TB, SEC) and status register protect bits (SRP0/SRP1) to lock sectors as small as 4KB or the entire array.

Can the W25Q128FVBJQ TR be used for execute-in-place (XIP) applications?

Yes - the W25Q128FVBJQ TR supports true XIP via Continuous Read Mode with wrap lengths of 8/16/32/64 bytes and Fast Read Quad I/O (EBh) instructions. At 104MHz clock, it delivers up to 416MB/s effective throughput, enabling direct CPU instruction fetch without RAM buffering.

What unique security features does the W25Q128FVBJQ TR provide beyond basic write protection?

The W25Q128FVBJQ TR includes three 256-byte security registers with OTP lock bits (LB1–LB3), a factory-programmed 64-bit unique ID, and JEDEC SFDP register for standardized parameter discovery - enabling secure key storage, device authentication, and automated driver configuration not found in basic serial flash devices.