W25Q64JWXGAQ

W25Q64JWXGAQ is Winbond’s 64-Mbit (8 MB) serial flash memory in the W25Q family. It provides non-volatile storage accessible over an SPI-compatible interface, with options for higher-throughput dual/quad I/O reads.
Key points
- Capacity and organization: 64 Mbit total; 256-byte pages; 4 KB sectors; 64 KB blocks.
- Interface: Standard SPI plus dual/quad I/O read modes for faster throughput.
- Voltage and temp: typically 2.7–3.6 V operation (industrial grades available).
- Speed: SPI read up to about 104 MHz; higher speeds in dual/quad I/O modes.
- Features: page programming, sector/block erases, bulk erase, write protection and security features; data retention and endurance in typical flash specs.
- Common uses: firmware storage, boot loaders, and data logging in embedded systems and microcontroller projects.

Equivalent 64-Mbit SPI NOR flash devices (JEDEC-compatible) to Winbond W25Q64JWXGAQ include:
- Macronix MX25L6406E
- Macronix MX25U6406E
- GigaDevice GD25Q64C
- Spansion/Cypress S25FL064K
- ISSI IS25LP064A
- Puya P25Q64H
Note: verify same voltage, timing, package, and vendor flash ID; some variants offer Quad/SPI modes.

Key features of W25Q64JWXGAQ:
- 64 Mbit (8 MB) serial flash memory
- SPI-compatible interface with standard SPI plus Dual I/O and Quad I/O modes
- Up to 104 MHz operation; fast read and continuous read support
- 256-byte page program
- Erase types: 4 KB sectors; 32 KB and 64 KB blocks; chip erase
- Endurance: ~100,000 program/erase cycles per sector; data retention ~20 years
- Low-power modes: Deep Power-Down and standby
- Security: sector protection, hardware write protection (WP#), status register protection
- 3-byte addressing (sufficient for 64 Mbit) with typical commercial/industrial grade availability
- Temperature range: -40°C to 85°C (industrial variants available)

- Pin count: 8 pins (8-pin package such as SOP8/WSON-8)
- Function: 64 Mbit serial flash memory with SPI interface (Quad I/O capable on this variant) used to store firmware/data. Supports standard flash operations (Read/ Fast Read, Page Program, Sector/Block/Chip Erase) and low-power modes, typically powered from 2.7–3.6 V.

- Manufacturer: Winbond Electronics Corp. (Winbond)
- What kind of company: A Taiwanese multinational semiconductor company that designs and manufactures memory ICs (such as serial flash and DRAM) and sells memory products worldwide.

W25Q64JWXGAQ is a 64 Mbit SPI flash suitable for:
- Firmware storage and boot code for MCUs/SoCs
- Firmware updates and recovery in embedded systems
- Data logging and non-volatile storage of sensor/event data (IoT, industrial, medical)
- Configuration, calibration data, and parameter storage
- Cache/buffer storage for consumer electronics (cameras, printers, set-top boxes, media players)
- Storage for networking equipment (routers, modems) requiring fast read in SPI
- Automotive ECUs (non-safety-critical) data/config storage
Note: supports dual/quad SPI for higher throughput and low-power operation.

8-pin SOP (SOIC-8) package, RoHS-compliant.