GD25Q64E is a high-performance 64Mbit (8MB) SPI NOR Flash serial memory chip launched by GigaDevice, with document number DS-00484-GD25Q64E-Rev1.6, Revision 1.6.Core Storage Specifications: The product adopts a standard SPI NOR Flash architecture with a total capacity of 64Mbit (8MB), organized into uniform 4KB sectors, 32KB/64KB blocks, and 256 bytes per page. It supports page program, sector/block/chip erase operations, with a typical page program time of 0.5ms, 4KB sector erase time of 45ms, 64KB block erase time of 0.25s, and chip erase time of 18s, meeting the rapid programming requirements of embedded systems.Interface & Performance: It supports three interface modes: Standard SPI, Dual SPI, and Quad SPI, with a maximum clock frequency of 133MHz and a bandwidth of up to 532Mbps in Quad SPI mode. It fully supports XiP (Execute-in-Place) function, which can directly provide high-speed code fetching and operation for MCUs and SoCs without loading firmware into RAM, greatly reducing system memory usage and startup latency.Electrical & Power Consumption: Powered by a single 2.7V~3.6V supply, compatible with mainstream embedded system voltages; standby current is as low as 12μA, and deep power-down mode current is only 1μA, with extreme low power consumption suitable for IoT and battery-powered devices; operating temperature covers industrial grade -40℃~+85℃, with optional wide temperature models -40℃~+105℃/-40℃~+125℃, meeting the stringent environmental requirements of industrial control and automotive electronics.Security & Protection: Built-in comprehensive security mechanisms, supporting software/hardware write protection, with flexible block protection range configuration via status register bits BP0~BP4, and hardware locking via WP# pin; equipped with a 128-bit unique chip ID for device authentication; provides 3×1024-byte OTP (One-Time Programmable) security area for storing encryption keys, serial numbers and other sensitive data, supporting permanent locking; compliant with SFDP standard parameter table, compatible with general Flash driver frameworks.Control & Reliability: Supports complete Flash operation commands, including Write Enable/Disable, Read/Write Status Register, Erase/Program Suspend/Resume, HOLD# communication pause, software reset, etc.; program/erase endurance ≥ 100,000 cycles, data retention up to 20 years (typical value), ensuring long-term stable and reliable data.Package & Application: Available in multiple packages including SOP8, USON8, WSON8, TFBGA24, adapting to different PCB layout and volume requirements; standard packaging is Tape & Reel (TR), supporting small-batch packaging such as Tube and Tray. The product is widely used in embedded system firmware storage, IoT devices, industrial control, consumer electronics, set-top boxes, gateways, BIOS/UEFI, automotive electronics, smart home and other non-volatile storage scenarios, and is a cost-effective choice to replace traditional parallel Flash and upgrade storage capacity.