Winbond Electronics Corporation W25Q64JWUUIQ TR

Overview

W25Q64JWUUIQ TR from Winbond is a 64M-bit (8MB) 1.8V serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock frequency, 66MB/s continuous read throughput, and industrial-grade -40°C to +105°C operation. It features uniform 4KB sectors, 100K program-erase cycles, and 20+ year data retention - deployed in boot code storage, XIP execution, and firmware update storage for embedded controllers.

For engineers reviewing the W25Q64JWUUIQ TR datasheet, W25Q64JWUUIQ TR pinout, W25Q64JWUUIQ TR application, or W25Q64JWUUIQ TR equivalent, key selection criteria include Quad I/O timing compliance, /WP and /HOLD dual-function pin behavior under QE=1, sector-level hardware write protection granularity, and TFBGA/WSON package compatibility with high-density PCB layouts.

Technical Context

The W25Q64JWUUIQ TR implements a quad-I/O SPI interface requiring non-volatile Quad Enable (QE) bit setting in Status Register-2 to repurpose /WP and /HOLD as IO2 and IO3; standard/dual SPI retains /WP and /HOLD functionality. Its architecture supports erase suspend/resume, individual sector/block locking via security registers, and JEDEC SFDP for auto-configurable driver initialization.

It integrates three 256-byte one-time-programmable (OTP) security registers, 64-bit unique ID per device, and configurable output drive strength (DRV1/DRV0) for signal integrity tuning across trace lengths and load conditions - all operating within 1.7V–1.95V supply range with <1µA typical power-down current.

Key Specifications

Pinout & Package

W25Q64JWUUIQ TR is packaged in an 8-pad USON 4×3-mm (Package Code UU), with exposed pad thermal enhancement. Pin functions are shared across SPI modes: /CS enables command latching; CLK synchronizes all transfers; DI/DO serve as IO0/IO1 in standard/dual mode; /WP and /HOLD become IO2/IO3 when Quad Enable (QE) is set.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZUI-10G and S25FL164K0XMFI010, the W25Q64JWUUIQ TR delivers highest Quad SPI bandwidth (133MHz), integrated unique ID and SFDP, and finer 4KB sector protection - making it optimal for new 1.8V industrial designs demanding speed, security, and field-upgrade resilience.

Availability

W25Q64JWUUIQ TR is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, and secure key management requiring stable component supply across industrial, automotive, and medical electronics programs.

Supply support for W25Q64JWUUIQ 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 NOR/NAND flash, RAM, and mobile DRAM - serving industrial, communications, and consumer markets since 1987.

The W25Q64JWUUIQ TR belongs to Winbond's 25Q family of high-performance serial flash devices, engineered specifically for code execution (XIP), secure firmware storage, and robust operation in extended-temperature industrial environments.

FAQ

What is the maximum supported Quad SPI clock frequency for the W25Q64JWUUIQ TR?

The W25Q64JWUUIQ TR supports up to 133 MHz Quad SPI clock frequency, enabling 532 Mbps effective data transfer using Fast Read Quad I/O (EBh) instructions. This specification is validated across the full -40°C to +105°C operating range and requires proper PCB layout with controlled impedance traces and termination matching to sustain reliable operation at this rate.

Does the W25Q64JWUUIQ TR support hardware reset via a dedicated /RESET pin?

No - the W25Q64JWUUIQ TR does not include a dedicated /RESET pin. Hardware reset is only available on select Winbond packages such as SOIC-16 and TFBGA; the USON 4×3-mm package (UU) used by W25Q64JWUUIQ TR relies solely on software reset (66h + 99h sequence). The /HOLD pin remains functional in standard/dual SPI but is repurposed as IO3 in Quad mode when QE=1.

How does the /WP pin behave when Quad Enable (QE) is set on the W25Q64JWUUIQ TR?

When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /WP pin on the W25Q64JWUUIQ TR is reassigned as IO2 for Quad SPI data transfer and loses its hardware write-protect function. To retain hardware write protection in Quad mode, external circuitry or software-controlled status register protection (SRP/SRL bits) must be used instead - the /WP pin cannot simultaneously serve both roles.

What package type is used by the W25Q64JWUUIQ TR, and what are its thermal characteristics?

The W25Q64JWUUIQ TR uses an 8-pad USON 4×3-mm package (Package Code UU) with an exposed thermal pad. This package supports ≤1.95V operation and achieves <1 µA typical power-down current. The exposed pad must be soldered to a PCB thermal pad with ≥4 thermal vias to maintain junction temperature within spec under continuous 133 MHz Quad I/O operation at +105°C ambient.

Can the W25Q64JWUUIQ TR execute code directly from flash (XIP), and what interface modes support it?

Yes - the W25Q64JWUUIQ TR supports execute-in-place (XIP) directly from flash using Dual SPI (e.g., Fast Read Dual I/O BBh) and Quad SPI (e.g., Fast Read Quad I/O EBh) interfaces. XIP is not supported in standard SPI mode due to insufficient bandwidth. The device's 133 MHz Quad SPI clock enables real-time instruction fetch for ARM Cortex-M4/M7 cores without intermediate RAM buffering.