SPI NOR Flash for Drone & UAV Electronics

SPI NOR Flash memory is essential for UAV electronic systems. Used for bootloader storage, blackbox flight data logging, and firmware storage, SPI NOR Flash offers fast read/write speeds with a simple serial interface.

Why NOR Flash for Drones?

NOR Flash provides random-access read capability with fast erase times, making it ideal for code storage and frequent read operations in flight controllers. Key advantages:

Fast serial interface (SPI up to 133 MHz)
Low power consumption in standby
Wide temperature range: −40°C to +85°C
Compact packages: SOIC-8, WSON-8, BGA
100,000+ erase cycles endurance

Featured Products

W25Q128JV

Winbond · 128Mb · SPI NOR · 133MHz

Standard blackbox logging chip for most FC boards. Betaflight and INAV compatible.

W25Q64JV

Winbond · 64Mb · SPI NOR · 133MHz

Cost-effective option for entry-level FC and config storage applications.

GD25Q128

GigaDevice · 128Mb · SPI NOR · 133MHz

Pin-compatible alternative to W25Q128JV. Cost-effective without sacrificing performance.

Application Notes

Blackbox Logging: W25Q128JV (128Mb) stores ~20-30 minutes of high-rate flight data. For longer sessions, use W25Q256JV or dual-Flash configurations.

Bootloader Storage: Even 16Mb NOR Flash is sufficient for most flight controller bootloaders. W25Q64JV is the minimum recommended capacity.

Betaflight: Betaflight supports SPI NOR Flash on F4, F7, and H7 targets via the flash API. W25Q128JV is the recommended chip for full blackbox support.

Frequently Asked Questions

What is SPI NOR Flash used for in drones?

SPI NOR Flash stores flight controller bootloader, configuration, and blackbox data. W25Q128JV is the most common chip for blackbox logging in Betaflight.

W25Q128JV vs GD25Q128 — which to choose?

Both are pin-compatible SPI NOR Flash with similar performance. GigaDevice GD25Q128 is typically more cost-effective while maintaining full reliability.

How much flash memory do I need for blackbox logging?

W25Q64JV (64Mb / 8MB) stores ~10-15 minutes at default rates. W25Q128JV (128Mb / 16MB) provides ~20-30 minutes for extended flight logging.

Is NOR Flash better than NAND for drone applications?

NOR Flash is preferred for code storage and frequent reads due to random-access capability. NAND is better for large-capacity data storage.

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