BY25Q64ASSIG

The BY25Q64ASSIG is a 64Mb SPI NOR Flash chip. Equivalent alternatives include:
- Winbond W25Q64JV
- Macronix MX25L6406E
- Micron (Adesto) AT25SF641
- GigaDevice GD25Q64
- ISSI IS25LP064
These chips offer similar 64Mb capacity, SPI interface, and compatible pinouts, making them suitable replacements. Verify voltage, speed, and command compatibility for your application.

The BY25Q64ASSIG is a 64Mbit (8MB) SPI NOR Flash memory chip with 8 pins. Key functions include:
- Pins:
- CS# (Chip Select)
- SCK (Serial Clock)
- SI (Serial Input)
- SO (Serial Output)
- WP# (Write Protect)
- HOLD# (Hold Input)
- VCC (Power)
- GND (Ground)
- Features:
- SPI Interface (supports Standard/Dual/Quad modes)
- High-speed read (up to 104MHz)
- Sector erase (4KB) & block erase (32/64KB)
- Software/hardware write protection
Used in embedded systems for firmware storage.

The BY25Q64ASSIG is a 64Mb (8MB) SPI NOR flash memory chip manufactured by BYD Semiconductor, a subsidiary of BYD Company Ltd.
BYD Semiconductor is a Chinese company specializing in power semiconductors, integrated circuits (ICs), and sensors. It is part of BYD’s broader ecosystem, which includes electric vehicles, batteries, and renewable energy solutions. The company focuses on automotive-grade and industrial-grade semiconductors, supporting applications like automotive electronics, IoT, and consumer devices.
Key points:
- Manufacturer: BYD Semiconductor (BYD Company Ltd.)
- Industry: Semiconductors (ICs, power devices)
- Applications: Automotive, industrial, consumer electronics
- Parent Company: BYD (known for EVs and batteries)
BYD Semiconductor emphasizes localized production in China, aligning with the country’s push for semiconductor self-sufficiency.

The BY25Q64ASSIG is a 64Mb (8MB) SPI NOR flash memory chip commonly used in:
1. Embedded Systems – Firmware storage for microcontrollers.
2. Consumer Electronics – Smart TVs, set-top boxes, IoT devices.
3. Automotive – Infotainment, instrument clusters, ECUs.
4. Industrial Control – Data logging, configuration storage.
5. Networking – Router/switch firmware, boot code.
6. Wearables & Smart Devices – Firmware and small data storage.
It offers fast read speeds, low power consumption, and reliable non-volatile storage for code and data.

The BY25Q64ASSIG is a 64Mb (8MB) SPI NOR Flash memory chip. It comes in an 8-pin SOP (Small Outline Package) with a standard footprint of 5.28mm x 5.23mm. This package type is widely used for compact, surface-mount applications, offering reliable performance in consumer electronics, IoT devices, and embedded systems. The SOP-8 package ensures easy PCB integration and efficient space utilization.