Winbond Electronics Corporation W25Q64FVSSJQ TR

Overview

W25Q64FVSSJQ TR from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at up to 104 MHz clock frequency with 50 MB/s continuous read throughput, organized into 32,768 × 256-byte pages and 2,048 uniform 4KB sectors - used for code storage, XIP execution, and firmware parameter retention in embedded microcontroller systems.

For engineers reviewing the W25Q64FVSSJQ TR datasheet, W25Q64FVSSJQ TR pinout, W25Q64FVSSJQ TR application, or W25Q64FVSSJQ TR equivalent, key selection considerations include SOIC-8 (208-mil) package compatibility, Quad Enable (QE) bit configuration for IO2/IO3 remapping, 2.7–3.6 V single-supply operation, and JEDEC ID / SFDP register support for automated flash initialization.

Technical Context

The W25Q64FVSSJQ TR implements a SPI-compatible command set with hardware-accelerated erase/program suspend-resume, configurable top/bottom 4KB sector protection via BP2–BP0 and TB bits, and non-volatile status register lock (SRP0/SRP1) enabling permanent write-protection of security-critical bits. Its architecture supports true execute-in-place (XIP) via Continuous Read Mode with ≤8-clock instruction overhead per 24-bit address access.

QPI mode reduces instruction overhead by encoding commands and addresses in 2-clock cycles, enabling full-duplex 4-bit I/O at 416 MHz effective data rate when paired with Fast Read Quad I/O (EBh) or Octal Word Read (E3h); all modes retain backward compatibility with legacy SPI controllers through dedicated Standard/Dual/Quad instruction subsets.

Key Specifications

Pinout & Package

W25Q64FVSSJQ TR uses an 8-pin SOIC-208-mil (package code SS) with standard SPI pinout and Quad SPI multiplexing: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD (IO3), VCC. Pin functions reconfigure under QPI mode - /WP and /HOLD become IO2 and IO3 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 MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64FVSSJQ TR uniquely delivers QPI mode for reduced instruction overhead, JEDEC SFDP for plug-and-play driver initialization, and full Quad SPI compatibility - making it optimal for new designs requiring scalable, future-proof flash integration.

Availability

W25Q64FVSSJQ TR is available at Aetrix Electronics and suitable for industrial automation, automotive infotainment, and medical diagnostics systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25Q64FVSSJQ 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 memory solutions, including serial flash, mobile DRAM, and code storage devices for embedded and consumer applications.

The W25Q64FV series belongs to Winbond's SpiFlash family, designed specifically for high-reliability, low-power, and space-constrained embedded systems requiring robust code storage, XIP execution, and secure firmware update capabilities.

FAQ

What is the package type and lead count of the W25Q64FVSSJQ TR?

The W25Q64FVSSJQ TR uses an 8-pin SOIC-208-mil (Small Outline Integrated Circuit) package with standard gull-wing leads. This package code "SS" is explicitly defined in Winbond's ordering information and matches the pin configuration shown in Figure 1a of the datasheet - ensuring mechanical and thermal compatibility with legacy PCB footprints designed for 208-mil SOIC flash devices.

Does the W25Q64FVSSJQ TR support Quad SPI mode, and how is it enabled?

Yes, the W25Q64FVSSJQ TR supports Quad SPI mode via the non-volatile Quad Enable (QE) bit in Status Register-2. To activate it, the host must issue Write Enable (06h), then Write Status Register (01h) with QE=1. Once set, pins /WP and /HOLD become IO2 and IO3, enabling four-line data transfer using instructions like Fast Read Quad I/O (EBh).

What is the maximum clock frequency supported by the W25Q64FVSSJQ TR in Standard SPI mode?

The W25Q64FVSSJQ TR supports up to 104 MHz in Standard SPI mode, as specified in Section 8.6 "AC Electrical Characteristics" of the datasheet. This allows sustained read throughput exceeding 10 MB/s - significantly higher than legacy 40–50 MHz SPI flash parts - while maintaining full compatibility with SPI Mode 0 and Mode 3 timing requirements.

How many erase cycles does the W25Q64FVSSJQ TR guarantee per sector?

The W25Q64FVSSJQ TR guarantees a minimum of 100,000 program/erase cycles per sector, as stated in the "Features" section (page 5) and confirmed in Section 8.6 AC characteristics. This endurance rating applies uniformly across all 2,048 sectors and is validated under standard operating conditions (25°C, VCC = 3.0–3.6 V).

Is the W25Q64FVSSJQ TR compatible with JEDEC-standard SFDP configuration?

Yes, the W25Q64FVSSJQ TR implements JEDEC JESD216-compliant Serial Flash Discoverable Parameters (SFDP) register, accessible via Read SFDP Register (5Ah) instruction. This enables automatic detection of timing parameters, erase block sizes, and feature flags - eliminating hardcoded driver assumptions and simplifying porting across flash vendors.