Winbond Electronics Corporation W25Q128FVFJQ TR

Overview

W25Q128FVFJQ TR from Winbond is a 3.3V, 128M-bit (16MB) serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces. It features 4KB uniform sectors, 104MHz max clock frequency, 50MB/s continuous read throughput, and operates across –40°C to +85°C. It serves as non-volatile code storage for microcontroller boot images, firmware updates, and parameter logging in space-constrained embedded systems.

For engineers reviewing the W25Q128FVFJQ TR datasheet, W25Q128FVFJQ TR pinout, W25Q128FVFJQ TR application, or W25Q128FVFJQ TR equivalent, key selection criteria include Quad SPI XIP capability, hardware write protection via /WP and /HOLD pins, JEDEC-compliant SFDP register support, and compatibility with 8-pin SOIC-208mil footprint for legacy board reuse.

Technical Context

The W25Q128FVFJQ TR implements a flexible SPI-compatible command set with volatile/non-volatile status registers enabling sector-level lock control (BP0–BP2, TB, SEC), quad enable (QE), and output driver strength (DRV0/DRV1). Its architecture supports simultaneous erase/program suspend-resume and true execute-in-place (XIP) via Continuous Read Mode with ≤8-clock instruction overhead.

It integrates three 256-byte one-time-programmable (OTP) security registers, 64-bit unique ID, and JEDEC-standard manufacturer/device ID and SFDP register. The /HOLD and /WP pins function as IO3 and IO2 respectively only when QE = 0; when QE = 1, those pins become dedicated quad I/O lines - a critical timing and configuration dependency for QPI mode initialization.

Key Specifications

Pinout & Package

W25Q128FVFJQ TR uses an 8-pin SOIC-208mil package (Package Code S), surface-mount, gull-wing leads, 1.27 mm pitch. Pin 1 marked with notch or dot; pin 4 and pin 5 are GND and VCC respectively.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q128FVFJQ TR, MX25L12833FZC-10G offers identical pinout and voltage but omits QPI and SFDP - limiting XIP performance and auto-configuration. S25FL128SAGMFI000 provides broader interface options but trades clock speed for HyperBus compatibility and requires validation of reset timing in safety-critical contexts.

Availability

W25Q128FVFJQ TR is available at Aetrix Electronics and suitable for industrial control, automotive telematics, and medical diagnostics requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for W25Q128FVFJQ 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 company specializing in specialty DRAM, mobile DRAM, and serial flash memory since 1987.

The W25Q series targets embedded systems requiring high-speed, low-power, and secure non-volatile storage - optimized for code execution, firmware updates, and parameter retention in resource-constrained environments.

FAQ

What interface protocols does the W25Q128FVFJQ TR support?

The W25Q128FVFJQ TR supports Standard SPI, Dual I/O SPI, Quad I/O SPI, and Quad Peripheral Interface (QPI). QPI mode is enabled by setting the Quad Enable (QE) bit in Status Register-2 and issuing the Enter QPI Mode (38h) instruction. All modes operate on the same 8-pin SOIC-208mil package, with /WP and /HOLD repurposed as IO2 and IO3 in Quad/QPI configurations.

Does the W25Q128FVFJQ TR support execute-in-place (XIP) operation?

Yes, the W25Q128FVFJQ TR supports true XIP via its Continuous Read Mode and QPI interface. With ≤8 clocks to initiate the first data byte and wrap lengths up to 64 bytes, it enables direct CPU instruction fetch without buffering. This is validated in applications such as automotive ADAS boot loaders where deterministic latency and reduced external memory footprint are critical.

How is hardware write protection implemented on the W25Q128FVFJQ TR?

Hardware write protection on the W25Q128FVFJQ TR combines the active-low /WP pin with non-volatile status register bits (BP0–BP2, TB, SEC, CMP). When /WP is held low and SRP0/SRP1 are set, the status register becomes read-only. Sector-level protection can be configured independently - for example, top 64KB locked via TB=1 and BP2–BP0=111, while lower sectors remain field-programmable.

What is the purpose of the /HOLD pin on the W25Q128FVFJQ TR?

The /HOLD pin on the W25Q128FVFJQ TR pauses ongoing SPI transactions without deselecting the device: when asserted low (with /CS low), DO goes high-impedance and DI/CLK are ignored. This allows multi-device SPI bus sharing without reinitialization. Note that /HOLD is disabled when QE=1 - in Quad/QPI mode, pin 7 becomes IO3, not /HOLD.

Is the W25Q128FVFJQ TR compatible with JEDEC-standard SFDP?

Yes, the W25Q128FVFJQ TR implements the JEDEC JESD216 standard Serial Flash Discoverable Parameters (SFDP) register. Host controllers can read this 64-byte table at address 0x00000000 to auto-detect memory density, timing parameters, erase block sizes, and supported instruction sets - eliminating hardcoded flash initialization in bootloader firmware.