Winbond Electronics Corporation W25Q64JVSFJQ TR

Overview

W25Q64JVSFJQ TR from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 133 MHz clock rate, 4KB uniform sector architecture, and hardware write protection via /WP and /HOLD pins - used for code storage, XIP execution, and firmware parameter retention in space-constrained embedded systems.

For engineers reviewing the W25Q64JVSFJQ TR datasheet, W25Q64JVSFJQ TR pinout, W25Q64JVSFJQ TR application, or W25Q64JVSFJQ TR equivalent, key selection considerations include Quad SPI enable (QE bit), /RESET pin availability (SOIC-16 only), 2.7–3.6V supply range, 100K program-erase cycles per sector, and JEDEC-compliant device ID and SFDP register support.

Technical Context

The W25Q64JVSFJQ TR implements a SPI-compatible command set with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), where Quad mode requires non-volatile QE bit setting in Status Register-2. It integrates a 256-byte page buffer, supports erase suspend/resume, and uses internal high-voltage generators for program/erase operations without external charge pumps.

Its memory array is organized into 32,768 pages of 256 bytes each, forming 2,048 erasable 4KB sectors and 128 erasable 64KB blocks. Security features include three 256-byte OTP-capable security registers, 64-bit unique ID, and configurable block/sector protection via BP, TB, SEC, and CMP bits in volatile and non-volatile status registers.

Key Specifications

Pinout & Package

W25Q64JVSFJQ TR is packaged in 16-pin SOIC 300-mil (Package Code SF), featuring dedicated /RESET pin and dual-function /HOLD pin. Pin assignments are validated per Winbond datasheet Revision J, Section 3.5.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q64JVSFJQ TR, MX25L6433FZNI-10G offers lower cost but omits /RESET and SFDP, limiting robustness and auto-configuration; S25FL164K0XMFI010 provides voltage flexibility and HyperBus readiness but trades off hold functionality and peak SPI speed.

Availability

W25Q64JVSFJQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical IoT sensor node applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W25Q64JVSFJQ 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.

The W25Q series targets embedded systems requiring high-speed, low-power, and secure code/data storage - designed specifically for XIP, firmware updates, and parameter retention in resource-constrained environments.

FAQ

Does W25Q64JVSFJQ TR support hardware reset, and which package options include the /RESET pin?

Yes, W25Q64JVSFJQ TR supports hardware reset via a dedicated /RESET pin, which is physically present only in the 16-pin SOIC 300-mil (SF) and TFBGA packages. In W25Q64JVSFJQ TR, Pin 3 is assigned to /RESET and functions independently of software commands. When driven low for ≥1 µs, it forces an immediate return to power-on state, terminating all ongoing operations - critical for fail-safe recovery in safety-critical systems.

What is the role of the QE bit in W25Q64JVSFJQ TR, and how is it configured?

The Quad Enable (QE) bit in W25Q64JVSFJQ TR is a non-volatile flag located in Status Register-2 that must be set to '1' to activate Quad SPI mode. Once programmed, IO2 (/WP) and IO3 (/HOLD) become functional data lines (IO2/IO3), enabling 4-line data transfer. Configuration requires issuing Write Enable (06h), then Write Status Register-2 (31h) with byte value including QE=1 - verified by reading Status Register-2 (35h). This setting persists across power cycles.

How does W25Q64JVSFJQ TR implement hardware write protection, and what pins are involved?

W25Q64JVSFJQ TR implements hardware write protection using the active-low /WP pin (Pin 9) in conjunction with Block Protect (BP) and Status Register Protect (SRP) bits in its status registers. When /WP is held low, writes to status register bits controlling sector/block protection are blocked - preventing accidental modification of protection settings. This complements software-based protection and is especially valuable during power transitions or ESD events where software control may be unreliable.

Can W25Q64JVSFJQ TR execute code directly from flash (XIP), and what performance benefits does Quad SPI provide?

Yes, W25Q64JVSFJQ TR supports execute-in-place (XIP) operation via Dual and Quad SPI interfaces. In Quad SPI mode with 133 MHz clock, it achieves up to 532 MHz effective throughput (133 MHz × 4), delivering sustained read rates exceeding 50 MB/s - significantly faster than standard SPI (≤13.3 MB/s at 133 MHz). This enables rapid code shadowing to RAM or direct execution of non-time-critical firmware, reducing system boot time and SRAM usage.

What security features are integrated into W25Q64JVSFJQ TR beyond basic write protection?

W25Q64JVSFJQ TR includes multiple hardware-enforced security features: a factory-programmed 64-bit unique ID for device authentication; three 256-byte one-time-programmable (OTP) security registers for storing cryptographic keys or calibration data; individual sector/block lock/unlock commands (36h/39h); and complement protection (CMP) and top/bottom array protection (TB) bits. These features operate independently of software control and persist through power cycles, meeting requirements for secure boot and tamper-resistant firmware storage.