Winbond Electronics Corporation W25Q64FVSSIP

Overview

W25Q64FVSSIP from Winbond is a 64M-bit (8MB) serial NOR flash memory IC designed for code storage and data logging in space-constrained embedded systems. It supports Standard/Dual/Quad SPI and QPI interfaces, operates from 2.7V–3.6V, delivers up to 104MHz clock rate (416MHz equivalent Quad I/O), and features uniform 4KB sectors, 20-year data retention, and hardware write protection via /WP and /HOLD pins.

For engineers reviewing the W25Q64FVSSIP datasheet, W25Q64FVSSIP pinout, W25Q64FVSSIP application, or W25Q64FVSSIP equivalent, this page provides verified pin functions, real-world timing behavior, XIP-capable continuous read mode, JEDEC ID and SFDP register support, and validated alternatives for industrial control, IoT firmware storage, and boot memory replacement.

Technical Context

The W25Q64FVSSIP implements a multi-mode SPI controller supporting Mode 0 and Mode 3 operation, with configurable I/O pin mapping: DI/DO in Standard SPI, IO0–IO1 in Dual SPI, and IO0–IO3 in Quad SPI/QPI-enabled only when the non-volatile Quad Enable (QE) bit in Status Register-2 is set. Its command decoder executes 41 distinct instructions including Fast Read Quad I/O (EBh), Quad Input Page Program (32h), and Erase/Program Suspend (75h).

Internally, the device organizes memory into 32,768 × 256-byte pages, 2,048 × 4KB sectors, and 128 × 64KB blocks. It integrates high-voltage generators for erase/program cycles, a 64-bit unique ID register, three 256-byte security registers with OTP locks, and SFDP (Serial Flash Discoverable Parameters) for runtime configuration discovery.

Key Specifications

Pinout & Package

W25Q64FVSSIP is packaged in an 8-pin SOIC 208-mil (package code SS), 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 become IO2 and IO3 respectively when Quad Enable (QE) bit is set.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64FVSSIP offers superior Quad I/O bandwidth and standardized SFDP discovery-making it optimal for Linux-based bootloaders and heterogeneous SoC platforms requiring runtime flash configuration negotiation.

Availability

W25Q64FVSSIP is available at Aetrix Electronics and suitable for industrial control systems, IoT edge gateways, and automotive infotainment modules requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across manufacturing lots.

Supply support for W25Q64FVSSIP 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 manufacturer specializing in specialty memory solutions, including serial NOR/NAND flash, PSRAM, and mobile DRAM, serving industrial, communications, and consumer markets since 1987.

The W25Q64FVSSIP belongs to Winbond's W25Q SpiFlash family, engineered for high-reliability embedded code storage with emphasis on XIP capability, security features, and multi-vendor interoperability in resource-constrained systems.

FAQ

What is the maximum clock frequency supported by W25Q64FVSSIP in Quad SPI mode?

The W25Q64FVSSIP supports up to 104 MHz on the CLK pin in Quad SPI mode, delivering an effective data rate of 416 MHz (104 MHz × 4 lines). This is confirmed in Section 1 General Description and Electrical Characteristics Table 8.6, where tV (clock period) is specified as 9.6 ns minimum, corresponding to 104.2 MHz maximum. The W25Q64FVSSIP achieves this using Fast Read Quad I/O (EBh) and Word Read Quad I/O (E7h) instructions.

Does W25Q64FVSSIP support execute-in-place (XIP) operation, and how is it enabled?

Yes, W25Q64FVSSIP supports true XIP via its Continuous Read Mode, which reduces instruction overhead to just 8 clocks per 24-bit address. This is enabled automatically after issuing Fast Read Quad I/O (EBh) or similar continuous-read instructions-no special configuration is required beyond setting the Quad Enable (QE) bit in Status Register-2. The W25Q64FVSSIP datasheet confirms XIP feasibility in Section 1 and Figure 3.

How does the /WP pin function differ between Standard SPI and Quad SPI modes on W25Q64FVSSIP?

In Standard SPI mode, the /WP pin (Pin 3) actively prevents writes to status registers when pulled low. In Quad SPI mode, the /WP pin becomes IO2 (data line 2) once the Quad Enable (QE) bit is set in Status Register-2-disabling hardware write protection. The W25Q64FVSSIP datasheet explicitly states this reassignment in Sections 4.3 and 3.4, noting that /WP functionality is unavailable during Quad I/O operation.

What package type does the W25Q64FVSSIP part number specifically denote?

The "SSIP" suffix in W25Q64FVSSIP indicates the 8-pin SOIC 208-mil package (package code SS), as defined in Section 9.11 Ordering Information and Figure 1a of the datasheet. This is distinct from other variants like W25Q64FVZP (WSON 6x5-mm) or W25Q64FVTC (TFBGA). The W25Q64FVSSIP uses standard gull-wing leads compatible with wave and reflow soldering processes.

Can W25Q64FVSSIP be used in automotive applications, and what qualifications does it meet?

The W25Q64FVSSIP is rated for −40°C to +85°C operation and meets industrial temperature grade requirements. While not AEC-Q100 qualified out-of-box, its electrical specs-including 20-year data retention, 100,000 endurance cycles, and robust ESD protection-are routinely leveraged in automotive body control modules and infotainment systems where extended temperature tolerance and long-term reliability are mandatory. The W25Q64FVSSIP datasheet specifies these parameters in Sections 2 and 8.2.