Winbond Electronics Corporation W25Q64FVDAIG

Overview

W25Q64FVDAIG from Winbond is a 64M-bit (8MB) 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 erase granularity, and integrated security registers. It enables execute-in-place (XIP) code execution in embedded microcontrollers and stores firmware, configuration data, and boot images.

For engineers reviewing the W25Q64FVDAIG datasheet, W25Q64FVDAIG pinout, W25Q64FVDAIG application, or W25Q64FVDAIG equivalent, key selection considerations include Quad SPI timing compliance, 4KB sector protection granularity, JEDEC ID and SFDP register support, and hardware write-protect pin behavior under QE=1 mode.

Technical Context

The W25Q64FVDAIG implements a multi-mode serial interface: Standard SPI uses unidirectional DI/DO; Dual/Quad SPI and QPI use bidirectional IO0–IO3, enabled only when the non-volatile Quad Enable (QE) bit in Status Register-2 is set. In Quad mode, /WP and /HOLD become IO2 and IO3, disabling their hardware protection functions.

Its architecture supports true XIP via Continuous Read Mode with ≤8-clock instruction overhead, 50MB/s sustained read throughput, and flexible erase hierarchy: 4KB sectors (2,048), 32KB blocks (128), 64KB blocks (128), and full-chip erase. Erase/program suspend/resume and volatile/non-volatile status register bits enable robust background operation.

Key Specifications

Pinout & Package

W25Q64FVDAIG is packaged in an 8-pin SOIC 300-mil (package code DA), 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 (IO3), pin 8 = VCC. Pin functions are shared across SPI modes; /WP and /HOLD revert to IO2/IO3 in Quad/QPI mode when QE=1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI013, the W25Q64FVDAIG delivers highest interface flexibility (QPI + SFDP) and raw bandwidth (104MHz/416MHz QDR), making it optimal for XIP-critical designs where dynamic configuration and minimal instruction overhead are essential.

Availability

W25Q64FVDAIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image loading, and medical IoT sensor node configuration requiring stable component supply across long-lifecycle programs.

Supply support for W25Q64FVDAIG 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 memory solutions, including serial NOR/NAND flash, RAM, and mobile DRAM.

The W25Q series targets embedded systems requiring high-speed, secure, and space-constrained code and data storage - optimized for microcontroller boot, firmware updates, and real-time configuration retention.

FAQ

What is the maximum SPI clock frequency supported by the W25Q64FVDAIG?

The W25Q64FVDAIG supports up to 104 MHz for Standard, Dual, and Quad SPI operations. At this frequency, Quad SPI achieves an effective data rate of 416 MHz (104 MHz × 4), enabling 50 MB/s continuous read throughput. This rating applies across the full industrial temperature range (-40°C to +85°C) and 2.7–3.6 V supply, as verified in AC Electrical Characteristics section 8.6 of the datasheet.

Does the W25Q64FVDAIG support execute-in-place (XIP) operation?

Yes, the W25Q64FVDAIG supports true XIP via Continuous Read Mode, which requires only 8 clock cycles to initiate sequential reads after the initial address setup. Combined with Quad SPI or QPI interfaces, this enables low-latency instruction fetch directly from flash - eliminating need for RAM shadowing in resource-constrained MCUs. The feature is confirmed in Section 1 General Description and Functional Descriptions section 6.1.5.

How does the /WP pin behave when Quad SPI mode is enabled on the W25Q64FVDAIG?

When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /WP pin (Pin 3) is reassigned as IO2 and loses its hardware write-protect function. Physical write protection is then disabled, and sector/block protection must be managed exclusively via software-configured status register bits (BP0–BP2, TB, SEC). This behavior is explicitly documented in Sections 4.3 and 3.4 of the datasheet.

What package type does the W25Q64FVDAIG use, and what are its key mechanical dimensions?

The W25Q64FVDAIG uses an 8-pin SOIC 300-mil package (package code DA), measuring 7.62 mm × 5.33 mm × 2.39 mm (L × W × H) with 1.27 mm lead pitch. This through-hole-compatible outline is specified in Section 9.3 of the datasheet and supports standard reflow or wave soldering processes used in industrial PCB assembly.

Can the W25Q64FVDAIG store unique device identifiers for secure authentication?

Yes, the W25Q64FVDAIG includes a factory-programmed 64-bit Unique ID (accessible via instruction 4Bh) and three 256-byte Security Registers (readable with 48h, programmable with 42h, erasable with 44h) that support OTP locking via LB1–LB3 bits. These features are validated in Sections 7.2.33 and 7.1.9 of the datasheet and enable hardware-rooted device identity and key storage.