Winbond Electronics Corporation W25Q128FVPIQ

Overview

W25Q128FVPIQ 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 speed, 50MB/s continuous read throughput, and operates from -40°C to +85°C. It enables XIP (execute-in-place) code execution in embedded microcontrollers and stores firmware, configuration data, and assets in space-constrained IoT and industrial control systems.

For engineers reviewing the W25Q128FVPIQ datasheet, W25Q128FVPIQ pinout, W25Q128FVPIQ application, or W25Q128FVPIQ equivalent, key selection criteria include Quad I/O support with QE bit enablement, hardware write protection via /WP and /HOLD pins, sector-level erase flexibility, JEDEC ID and SFDP register compliance, and compatibility with 8-pin SOIC-208mil packaging.

Technical Context

The W25Q128FVPIQ implements a quad I/O architecture where IO0–IO3 serve bidirectional data paths under QPI or Quad SPI mode, enabled by setting the non-volatile Quad Enable (QE) bit in Status Register-2. Its command set includes Fast Read Quad I/O (EBh), Word Read Quad I/O (E7h), and Octal Word Read Quad I/O (E3h), achieving up to 416MHz effective data rate at 104MHz CLK.

It supports three erase granularities-4KB sector, 32KB block, and 64KB block-with 4,096 erasable sectors and 256 erasable blocks. Write protection is implemented via volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP0/SRP1), hardware /WP pin (active-low), and configurable /HOLD or /RESET functionality on Pin 7 depending on QE and package type.

Key Specifications

Pinout & Package

W25Q128FVPIQ uses an 8-pin SOIC-208mil package (Package Code S), with 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. The /WP and /HOLD functions are disabled in Quad SPI mode when QE=1.

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 S25FL128SAGMFV001, the W25Q128FVPIQ uniquely combines QPI mode, /HOLD or /RESET dual-function pin, and OTP-secured registers in an 8-pin SOIC-208mil footprint - making it optimal for compact, secure, XIP-capable designs where instruction efficiency and pin count are constrained.

Availability

W25Q128FVPIQ is available at Aetrix Electronics and suitable for industrial HMI, automotive infotainment, and IoT edge device designs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W25Q128FVPIQ 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 solutions since 1987.

The W25Q series targets embedded systems requiring high-speed, low-power, and secure code/data storage - designed specifically for MCU boot, firmware update, and XIP-capable applications in industrial, automotive, and consumer markets.

FAQ

What is the package type and pin count of the W25Q128FVPIQ?

The W25Q128FVPIQ uses an 8-pin SOIC-208mil package (Package Code S). Its pinout includes /CS, DO/IO1, /WP/IO2, GND, DI/IO0, CLK, /HOLD or /RESET/IO3, and VCC. This compact footprint supports space-constrained PCB layouts while maintaining full Quad SPI and QPI functionality when the QE bit is set.

Does the W25Q128FVPIQ support execute-in-place (XIP) operation?

Yes, the W25Q128FVPIQ supports true XIP operation via its Continuous Read Mode and Quad SPI/QPI interfaces. With as few as 8 clock cycles to address memory and fast read commands like Fast Read Quad I/O (EBh), it enables direct code execution from flash without loading into RAM - reducing system latency and memory overhead in Cortex-M and RISC-V designs.

How is Quad SPI mode enabled on the W25Q128FVPIQ?

Quad SPI mode on the W25Q128FVPIQ is enabled by setting the non-volatile Quad Enable (QE) bit in Status Register-2 using the Write Status Register-2 (31h) instruction. Once QE=1, pins /WP (Pin 3) and /HOLD (Pin 7) become IO2 and IO3 respectively, enabling four-bit-wide data transfers. The change persists across power cycles unless explicitly cleared.

What write protection mechanisms does the W25Q128FVPIQ provide?

The W25Q128FVPIQ provides layered write protection: hardware via active-low /WP pin, software via status register bits (BP2–BP0, TB, SEC, CMP), and OTP-locked security registers. The /WP pin protects status register writes; BP bits allow selective 4KB sector locking; and security registers support one-time programmable key storage - collectively preventing unauthorized firmware or configuration modification.

Is the W25Q128FVPIQ compatible with standard SPI controllers?

Yes, the W25Q128FVPIQ is fully backward-compatible with standard SPI controllers. It supports Standard SPI (CLK, /CS, DI, DO, /WP, /HOLD) at up to 104MHz, requiring no hardware changes for legacy integration. Dual/Quad SPI and QPI modes are optional enhancements activated via instruction and status register configuration - preserving design reuse across generations.