Winbond Electronics Corporation W25Q64FVZPIG

Overview

W25Q64FVZPIG 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 50MB/s continuous read throughput, 4KB uniform sector erase granularity, and 1µA typical power-down current - deployed for code execution in place (XIP), firmware storage, and boot image retention in space-constrained embedded controllers.

For engineers reviewing the W25Q64FVZPIG datasheet, W25Q64FVZPIG pinout, W25Q64FVZPIG application, or W25Q64FVZPIG equivalent, key selection criteria include Quad Enable (QE) bit configuration, /WP and /HOLD pin reassignment in Quad mode, 4KB sector protection granularity, JEDEC ID (EF4017) confirmation, and compatibility with SFDP v1.6 parameter tables for automatic initialization.

Technical Context

The W25Q64FVZPIG implements a flexible SPI command architecture with four operational modes: Standard SPI (DI/DO unidirectional), Dual SPI (IO0/IO1 bidirectional), Quad SPI (IO0–IO3 active with QE=1), and QPI (all four I/Os used for address/instruction/data with reduced instruction overhead). Its status register includes non-volatile BP0–BP2, TB, SEC, CMP, SRP0/SRP1, and volatile SUS bits enabling fine-grained hardware write protection and suspend/resume during erase/program cycles.

Internally organized as 32,768 pages of 256 bytes each (total 8,388,608 bytes), it supports 4KB sector, 32KB block, 64KB block, and full-chip erase operations, with >100,000 program/erase cycles and >20-year data retention at +25°C. The device integrates three 256-byte security registers with OTP locks and a 64-bit unique serial number for secure firmware binding.

Key Specifications

Pinout & Package

W25Q64FVZPIG uses an 8-pin WSON 8x6-mm package (package code ZE), with exposed pad thermal enhancement. Pin 1 is /CS; pins 2–3–5–7 are bidirectional I/Os (IO1/IO2/IO0/IO3); pin 4 is GND; pin 6 is CLK; pin 8 is VCC.

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, W25Q64FVZPIG delivers superior XIP efficiency via QPI and autonomous initialization via SFDP, making it optimal for resource-constrained Cortex-M7/M33 designs where firmware agility and boot speed are prioritized over octal interface complexity.

Availability

W25Q64FVZPIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment bootloader deployment, and medical device configuration archiving requiring stable component supply across multi-year production cycles.

Supply support for W25Q64FVZPIG 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, automotive, and consumer markets since 1987.

The W25Q series targets high-reliability embedded systems needing robust code storage, fast XIP capability, and integrated security - designed specifically for microcontroller-based platforms where pin count, power, and firmware update integrity are critical constraints.

FAQ

What is the JEDEC ID of the W25Q64FVZPIG and how is it used in system initialization?

The W25Q64FVZPIG reports JEDEC ID EF4017 via the 9Fh command. This identifier is read during bootloader startup to confirm device presence and select appropriate timing parameters and command sets. It enables automatic driver matching in Linux MTD and bare-metal bootloaders, eliminating manual part-specific configuration and reducing integration risk across multiple Winbond flash variants.

Does the W25Q64FVZPIG support execute-in-place (XIP) operation, and what interface mode delivers optimal performance?

Yes, the W25Q64FVZPIG supports true XIP operation using Continuous Read Mode with Quad SPI or QPI interfaces. QPI delivers optimal performance: its 4-bit nibble encoding reduces instruction overhead, achieving effective bandwidth up to 416MB/s at 104MHz clock - outperforming standard SPI by 4× and enabling zero-copy execution of firmware images directly from flash on Cortex-M7/M33 cores.

How does the /WP pin behave when Quad Enable (QE) is set in the W25Q64FVZPIG status register?

When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /WP pin is reassigned as IO2 and loses its hardware write-protect function. Hardware protection must then rely solely on software-configured BP0–BP2, TB, and SEC bits. This behavior is documented in Section 4.3 and Figure 1a–1c of the datasheet - users must disable QE if persistent /WP-based lockdown is required.

What is the purpose of the SFDP register in the W25Q64FVZPIG, and how is it accessed?

The SFDP (Serial Flash Discoverable Parameters) register in the W25Q64FVZPIG (v1.6 compliant) provides standardized, self-describing timing and feature data accessible via command 5Ah. It eliminates hardcoded delay values in drivers by allowing runtime discovery of erase times, write enable sequences, and voltage requirements - critical for portable bootloader development across multiple flash vendors and densities.

Can the W25Q64FVZPIG's security registers be used to store cryptographic keys, and what locking mechanism applies?

Yes, the W25Q64FVZPIG includes three 256-byte security registers (SR1–SR3) that support OTP (one-time-programmable) locking via LB1–LB3 bits. Once locked, contents cannot be overwritten or read back - making them suitable for storing private keys, device certificates, or calibration secrets. Locking is irreversible and occurs at the byte level, enabling selective protection of sensitive fields without affecting adjacent data.