Winbond Electronics Corporation W25Q64JVTCIQ

Overview

W25Q64JVTCIQ from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces. It operates from 2.7V to 3.6V, delivers up to 133MHz clock frequency (532MHz equivalent Quad I/O), features uniform 4KB sectors (2,048 total), supports XIP execution, and consumes ≤1µA in power-down mode - used for code storage, firmware boot, and parameter retention in space-constrained embedded systems.

For engineers reviewing the W25Q64JVTCIQ datasheet, W25Q64JVTCIQ pinout, W25Q64JVTCIQ application, or W25Q64JVTCIQ equivalent, key selection considerations include Quad SPI enable (QE bit), /HOLD vs /RESET pin availability per package, sector protection granularity, erase/program suspend capability, and JEDEC SFDP register support for auto-configuration.

Technical Context

The W25Q64JVTCIQ 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. Its architecture includes a 256-byte page buffer, 4KB sector–aligned erase blocks, and hardware write-protection via /WP pin combined with BP/TB/SEC bits.

It integrates three 256-byte security registers, a 64-bit unique ID, and SFDP (Serial Flash Discoverable Parameters) register for runtime configuration discovery. The device supports erase/program suspend/resume, fast read variants (0Bh, 3Bh, 6Bh, BBh, EBh), and both software reset (66h+99h) and hardware /RESET (available only on SOIC-16 and TFBGA packages).

Key Specifications

Pinout & Package

W25Q64JVTCIQ uses the 8-pin WSON 6×5-mm package (Package Code ZP), with exposed pad for thermal dissipation. Pin functions are shared across SPI modes: /CS enables communication, CLK synchronizes transfers, DI/DO serve as IO0/IO1 in Dual mode, and /WP and /HOLD become IO2/IO3 in Quad mode 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, W25Q64JVTCIQ delivers superior Quad SPI throughput (133 MHz vs ≤104/80 MHz), integrated SFDP for plug-and-play driver setup, and richer security features - making it optimal for performance- and security-sensitive embedded firmware storage.

Availability

W25Q64JVTCIQ is available at Aetrix Electronics and suitable for IoT edge node firmware storage, industrial PLC boot memory, and automotive infotainment HMI requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for W25Q64JVTCIQ 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 consumer markets.

The W25Q series is designed specifically for high-reliability, space-constrained embedded systems requiring fast, secure, and flexible non-volatile code and data storage - with emphasis on XIP capability, multi-SPI protocol support, and industrial-grade endurance.

FAQ

What is the package type and footprint of W25Q64JVTCIQ?

W25Q64JVTCIQ uses the 8-pin WSON 6×5-mm package (JEDEC MO-241AC, Package Code ZP) with an exposed thermal pad. It has a 0.5 mm pitch, 2.1 mm × 1.9 mm body size, and requires solder mask defined pads per Winbond's recommended layout guidelines. This compact footprint supports high-density PCB designs typical in portable and wearable electronics.

Does W25Q64JVTCIQ support hardware reset, and how is it implemented?

W25Q64JVTCIQ does not support hardware reset (/RESET) in the WSON 6×5-mm (ZP) package - the /RESET function is only available on SOIC-16 and TFBGA packages. In W25Q64JVTCIQ, reset must be performed via software using the Enable Reset (66h) and Reset Device (99h) instruction sequence, which returns the device to its power-on state within ~30 µs.

How is Quad SPI mode enabled on W25Q64JVTCIQ?

Quad SPI mode on W25Q64JVTCIQ is enabled by setting the Quad Enable (QE) bit in Status Register-2 (SR2). This bit is non-volatile and must be written using Write Status Register-2 (31h) after issuing Write Enable (06h). Once QE=1, pins /WP and /HOLD become IO2 and IO3, allowing four-line data transfer for instructions like Fast Read Quad I/O (EBh).

What is the purpose of the /HOLD pin on W25Q64JVTCIQ, and when is it unavailable?

The /HOLD pin on W25Q64JVTCIQ pauses active SPI transfers while maintaining /CS assertion - useful for bus arbitration in multi-device systems. It is active-low and functions only in Standard and Dual SPI modes. When Quad SPI is enabled (QE=1), /HOLD is reassigned as IO3 and cannot be used for hold functionality; designers must manage timing externally in Quad mode.

Can W25Q64JVTCIQ be used for Execute-in-Place (XIP) applications, and what performance can be expected?

Yes, W25Q64JVTCIQ supports Execute-in-Place (XIP) directly from Quad SPI. With a 133 MHz clock and Fast Read Quad I/O (EBh), it achieves up to 532 MB/s effective read bandwidth. Real-world XIP performance depends on controller support for continuous read mode and cache line alignment, but typical latency for first instruction fetch is <10 µs - sufficient for real-time MCU boot and UI rendering.