Winbond Electronics Corporation W25Q128FVAIG TR

Overview

W25Q128FVAIG TR from Winbond is a 128M-bit (16MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at 2.7–3.6V with 104MHz max clock, 4KB uniform sectors, and 1µA power-down current. It enables XIP execution, code shadowing, and firmware/data storage in space-constrained embedded systems.

For engineers reviewing the W25Q128FVAIG TR datasheet, W25Q128FVAIG TR pinout, W25Q128FVAIG TR application, or W25Q128FVAIG TR equivalent, key selection criteria include Quad SPI bandwidth (416MHz equivalent), JEDEC SFDP support, 64-bit unique ID, hardware write protection via /WP and /HOLD pins, and flexible 4KB/32KB/64KB erase granularity.

Technical Context

The W25Q128FVAIG TR implements a multi-mode serial interface: Standard SPI (4-wire), Dual SPI (4-wire with IO0/IO1 bidirectional), Quad SPI (4-wire with IO0–IO3), and QPI (6-wire with dedicated command/address/data lanes). Its status register includes non-volatile Quad Enable (QE), Block Protect (BP2–BP0), and HOLD/RST configuration bits that determine pin functionality at power-up.

It supports true execute-in-place (XIP) via Continuous Read Mode with ≤8-clock instruction overhead and wrap-length options (8/16/32/64 bytes). Erase/program suspend/resume, security registers (3×256B OTP-locked), and JEDEC-compliant SFDP register enable standardized configuration and secure firmware updates.

Key Specifications

Pinout & Package

W25Q128FVAIG TR uses an 8-pin WSON 6×5-mm package (Package Code P), with exposed pad for thermal dissipation and RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q128FVAIG TR, MX25L12833FZNI-08G offers higher clock speed but lacks QPI and wrap-mode XIP, limiting throughput and flexibility; S25FL128SAGMFIR00 adds ECC and octal support but increases package size and removes dedicated /HOLD, making it less suitable for compact, hold-aware systems.

Availability

W25Q128FVAIG TR is available at Aetrix Electronics and suitable for industrial automation, automotive infotainment, medical imaging, and IoT edge gateway designs requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for W25Q128FVAIG 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 global semiconductor manufacturer specializing in specialty DRAM, mobile DRAM, and serial flash memory solutions since 1987.

The W25Q series targets cost-sensitive, space-constrained embedded systems requiring high-speed, secure, and reliable non-volatile storage - especially where XIP, firmware updates, and industrial temperature operation are essential.

FAQ

What interface protocols does the W25Q128FVAIG TR support?

The W25Q128FVAIG TR supports Standard SPI (4-wire), Dual SPI (4-wire with IO0/IO1), Quad SPI (4-wire with IO0–IO3), and Quad Peripheral Interface (QPI, 6-wire). QPI mode requires setting the Quad Enable (QE) bit in Status Register-2 and is enabled via the 0x38 instruction. All modes operate up to 104 MHz clock frequency, delivering up to 416 MB/s effective throughput in Quad I/O mode.

How does the /WP and /HOLD pin behavior change in Quad SPI mode?

In Quad SPI mode (QE = 1), the /WP pin becomes IO2 and the /HOLD pin becomes IO3 - both are repurposed as bidirectional data lines and lose their hardware protection/pause functions. This remapping is controlled by the non-volatile QE bit and is irreversible without resetting the register. The W25Q128FVAIG TR datasheet explicitly states that /WP and /HOLD functions are only available in Standard and Dual SPI configurations.

What is the significance of the 64-bit Unique ID in W25Q128FVAIG TR?

The 64-bit Unique ID in W25Q128FVAIG TR is factory-programmed, one-time-readable, and globally unique per unit. It enables cryptographic binding for secure boot, device authentication, and firmware anti-cloning. Applications include TLS certificate personalization, hardware root-of-trust implementation, and supply-chain traceability - all without consuming user memory space or requiring external secure elements.

Can W25Q128FVAIG TR be used for Execute-in-Place (XIP) operation?

Yes, W25Q128FVAIG TR supports true XIP via Continuous Read Mode, which reduces instruction overhead to as few as 8 clock cycles for address setup and supports wrap lengths of 8/16/32/64 bytes. When paired with a controller supporting Quad I/O or QPI, it delivers sufficient bandwidth (up to 416 MB/s) to sustain CPU instruction fetch without local RAM buffering - validated in ARM Cortex-M and RISC-V SoC reference designs.

What erase block sizes are available in W25Q128FVAIG TR?

W25Q128FVAIG TR provides four erase granularities: 4 KB sectors (4,096 total), 32 KB blocks (256), 64 KB blocks (128), and full-chip erase. All are uniform and non-overlapping. The 4 KB sector size enables fine-grained firmware patching and parameter storage, while larger blocks optimize bulk image updates. Erase commands (0x20, 0x52, 0xD8, 0xC7/0x60) are fully supported and verified across temperature and voltage ranges.