Winbond Electronics Corporation W25Q64FVTCIF

Overview

W25Q64FVTCIF from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at up to 104MHz clock frequency with 4KB uniform sector erase granularity and 1µA typical power-down current. It delivers 50MB/s continuous read throughput and supports execute-in-place (XIP) for embedded code storage in microcontroller boot applications.

For engineers reviewing the W25Q64FVTCIF datasheet, W25Q64FVTCIF pinout, W25Q64FVTCIF application, or W25Q64FVTCIF equivalent, key selection considerations include Quad Enable (QE) bit configuration for IO2/IO3 remapping, JEDEC ID (EF4017) verification, 4KB sector flexibility for firmware parameter storage, and compatibility with SPI mode 0/3 timing requirements.

Technical Context

The W25Q64FVTCIF implements a unified SPI/QPI command architecture where standard SPI uses unidirectional DI/DO, while Dual/Quad SPI and QPI use bidirectional IO0–IO3 pins-requiring the non-volatile QE bit (Status Register-2, bit 1) to be set for Quad I/O operation. The /WP and /HOLD pins revert to IO2 and IO3 respectively when QE=1.

It features three 256-byte security registers with OTP locks, a 64-bit unique serial number, SFDP register for discoverable parameters, and hardware write protection via /WP pin plus configurable status register bits (BP2–BP0, TB, SEC, CMP). Erase suspend/resume enables concurrent background operations.

Key Specifications

Pinout & Package

W25Q64FVTCIF 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 adapt dynamically based on interface mode: /WP and /HOLD become IO2 and IO3 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 memory applications.

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64FVTCIF uniquely balances Quad SPI/XIP performance, integrated security features, and single-supply simplicity - making it optimal for industrial and medical edge devices where firmware integrity, low-power operation, and seamless driver integration matter most.

Availability

W25Q64FVTCIF is available at Aetrix Electronics and suitable for industrial HMI firmware storage, automotive ADAS boot code, and IoT edge node configuration requiring stable component supply, long-lifecycle assurance, and full traceability.

Supply support for W25Q64FVTCIF 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 for embedded, communications, and computing markets.

The W25Q series was designed specifically for high-performance, space-constrained embedded systems requiring reliable code storage, fast XIP capability, and robust security - targeting industrial control, automotive telematics, and medical diagnostics.

FAQ

What is the JEDEC manufacturer and device ID for W25Q64FVTCIF?

The W25Q64FVTCIF returns a JEDEC ID of EF4017 when queried via the 9Fh instruction: manufacturer ID EFh (Winbond), memory type 40h (NOR Flash), and capacity 17h (64M-bit). This ID is factory-programmed and identical across all W25Q64FV variants, enabling firmware auto-detection and driver compatibility verification during system initialization.

Does W25Q64FVTCIF support execute-in-place (XIP) operation?

Yes, W25Q64FVTCIF supports true XIP via Fast Read Quad I/O (EBh) and Continuous Read modes, achieving up to 416MHz effective throughput. Its 8-clock address setup latency and uniform 4KB sector architecture allow deterministic code fetch timing - essential for real-time microcontroller boot sequences and GUI rendering without external RAM buffering.

How does the Quad Enable (QE) bit affect pin functionality on W25Q64FVTCIF?

The QE bit (Status Register-2, bit 1) must be set to 1 to enable Quad SPI and QPI modes. When QE=1, the /WP pin (pin 3) becomes IO2 and /HOLD pin (pin 7) becomes IO3. In Standard/Dual SPI, these pins retain their hardware protection functions. The QE bit is non-volatile and persists across power cycles unless explicitly cleared.

What package type does W25Q64FVTCIF use, and what are its key mechanical dimensions?

W25Q64FVTCIF uses an 8-pin SOIC 208-mil package (package code SS), measuring 5.3 mm × 5.3 mm × 1.95 mm with 1.27 mm lead pitch. This RoHS-compliant, surface-mount package supports reflow soldering per J-STD-020 and is compatible with standard PCB assembly processes used in industrial and medical electronics manufacturing.

Can W25Q64FVTCIF be used in systems requiring data security and tamper resistance?

Yes, W25Q64FVTCIF includes three 256-byte security registers with one-time-programmable (OTP) lock bits, a 64-bit unique serial number, and hardware write protection via /WP pin plus status register bits (BP2–BP0, TB, SEC). These features enable secure key storage, firmware signature verification, and immutable device identification - meeting foundational requirements for IEC 62443 and ISO 13849 compliance.